mlton-commit — [MLton-commit] Code commits

[MLton-commit] [MLton/mlton] 900324: Fix build config validation info messages

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: 90032461e416b84483cdbf4459290470f9be6a0b
      https://github.com/MLton/mlton/commit/90032461e416b84483cdbf4459290470f9be6a0b
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-29 (Tue, 29 Oct 2019)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Fix build config validation info messages


  Commit: efbcea95e7be28401f58781d7d7a53d4468ad3c6
      https://github.com/MLton/mlton/commit/efbcea95e7be28401f58781d7d7a53d4468ad3c6
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-29 (Tue, 29 Oct 2019)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Explicitly set `arch: amd64` in `.travis.yml`


  Commit: ac7730c57cbde117a9564d76a73ac904b79fc755
      https://github.com/MLton/mlton/commit/ac7730c57cbde117a9564d76a73ac904b79fc755
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-11-01 (Fri, 01 Nov 2019)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Merge pull request #337 from MatthewFluet/travis-ci-updates

Updates for TravisCI build config validation

See https://docs.travis-ci.com/user/build-config-validation


Compare: https://github.com/MLton/mlton/compare/09dbffa31d3f...ac7730c57cbd

[MLton-commit] [MLton/mlton] 30aa6a: Avoid capturing IR-specific closures in global lis...

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: 30aa6ab426b0c91bb16447c22be14fe19f1cdcf0
      https://github.com/MLton/mlton/commit/30aa6ab426b0c91bb16447c22be14fe19f1cdcf0
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-28 (Mon, 28 Oct 2019)

  Changed paths:
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun
    M mlton/ssa/simplify.fun
    M mlton/ssa/simplify2.fun
    M mlton/xml/sxml-simplify.fun
    M mlton/xml/xml-simplify.fun

  Log Message:
  -----------
  Avoid capturing IR-specific closures in global list of control flags

See MLton/mlton#334, 85148aa, and 2b7a560.

After converting from one IR to the next, all global data associated
with the previous IR should be dead.  However, it was observed that
the tables used for hash-consing of types were retained after
converting from the corresponding IR.  Similarly, some properties
attached to `Ssa2.Tycon.t`, `Ssa2.Con.t`, and `Ssa2.Type.t` during
`PackedRepresentation` were not dead after converting to RSSA.

The `ControlFlags.optimizationPasses` reference was retaining
references to the IR-specific data, because it contained closures that
references IR_specific optimization passes.  Moreover, the
`ControlFlags.optimizationPasses` reference was retained by the global
`list ref` used to implement `Control.all()`.

This commit refactors the implementation of the optimization passes
controls so that the IR-specific closures are not retained by the
global list of control flags.


  Commit: 22e118b3111b21f63572e07077cc65a1a9289fcb
      https://github.com/MLton/mlton/commit/22e118b3111b21f63572e07077cc65a1a9289fcb
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-28 (Mon, 28 Oct 2019)

  Changed paths:
    M mlton/backend/packed-representation.fun
    M mlton/backend/representation.sig
    M mlton/backend/ssa2-to-rssa.fun

  Log Message:
  -----------
  Revert "Clear/Destroy properties used by `PackedRepresentation`"

This reverts commit 2b7a560ffdd20ec4db23360b5543df92269ea37d.


  Commit: 492a10bbfaae6e40b1ed22c278c9d92328a49f8e
      https://github.com/MLton/mlton/commit/492a10bbfaae6e40b1ed22c278c9d92328a49f8e
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-28 (Mon, 28 Oct 2019)

  Changed paths:
    M lib/mlton/basic/hash-set.sig
    M lib/mlton/basic/hash-set.sml
    M mlton/atoms/hash-type.fun
    M mlton/atoms/hash-type.sig
    M mlton/backend/ssa2-to-rssa.fun
    M mlton/closure-convert/closure-convert.fun
    M mlton/ssa/ssa-to-ssa2.fun
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree.sig
    M mlton/ssa/ssa-tree2.fun
    M mlton/ssa/ssa-tree2.sig

  Log Message:
  -----------
  Revert "Reset table for hash-consing of {{,S}XML,SSA{,2}} types"

This reverts commit 85148aaa64cac207c12459faedbb7ad456060a3d.


  Commit: 09dbffa31d3f91a97992fdb74cf1cb194ab05f28
      https://github.com/MLton/mlton/commit/09dbffa31d3f91a97992fdb74cf1cb194ab05f28
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-10-29 (Tue, 29 Oct 2019)

  Changed paths:
    M lib/mlton/basic/hash-set.sig
    M lib/mlton/basic/hash-set.sml
    M mlton/atoms/hash-type.fun
    M mlton/atoms/hash-type.sig
    M mlton/backend/packed-representation.fun
    M mlton/backend/representation.sig
    M mlton/backend/ssa2-to-rssa.fun
    M mlton/closure-convert/closure-convert.fun
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun
    M mlton/ssa/simplify.fun
    M mlton/ssa/simplify2.fun
    M mlton/ssa/ssa-to-ssa2.fun
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree.sig
    M mlton/ssa/ssa-tree2.fun
    M mlton/ssa/ssa-tree2.sig
    M mlton/xml/sxml-simplify.fun
    M mlton/xml/xml-simplify.fun

  Log Message:
  -----------
  Merge pull request #336 from MatthewFluet/mlton-space-leak

Avoid capturing IR-specific closures in global list of control flags

See MLton/mlton#334, 85148aa, and 2b7a560.

After converting from one IR to the next, all global data associated with the
previous IR should be dead.  However, it was observed that the tables used for
hash-consing of types were retained after converting from the corresponding IR.
Similarly, some properties attached to `Ssa2.Tycon.t`, `Ssa2.Con.t`, and
`Ssa2.Type.t` during `PackedRepresentation` were not dead after converting to
RSSA.

The `ControlFlags.optimizationPasses` reference was retaining references to the
IR-specific data, because it contained closures that references IR_specific
optimization passes.  Moreover, the `ControlFlags.optimizationPasses` reference
was retained by the global `{name: string, value: (unit -> string)} list ref`
used to implement `Control.all()`.

This PR refactors the implementation of the optimization passes controls so that
the IR-specific closures are not retained by the global list of control flags.
It then reverts 85148aa (Reset table for hash-consing of {{,S}XML,SSA{,2}}
types) and 2b7a560 (Clear/Destroy properties used by `PackedRepresentation`),
demonstrating that the space leaks have been closed.

MLton 20191028.200511-g492a10bbf starting
   control flags:
      align: 8
      atMLtons: (@MLton, --)
      bounceRssaLimit: Some 8
      bounceRssaLiveCutoff: Some 12
      bounceRssaLoopCutoff: Some 40
      bounceRssaUsageCutoff: Some 15
      chunkBatch: 32768
      chunkify: per function
      chunkTailCall: true
      closureConvertGlobalize: true
      closureConvertShrink: true
      codegen: amd64
      contifyIntoMain: false
      debug: false
      defaultChar: char8
      defaultWideChar: widechar32
      defaultInt: int32
      defaultReal: real64
      defaultWord: word32
      diag passes: []
      execute passes: []
      elaborate allowConstant (default): false
      elaborate allowConstant (enabled): true
      elaborate allowFFI (default): false
      elaborate allowFFI (enabled): true
      elaborate allowPrim (default): false
      elaborate allowPrim (enabled): true
      elaborate allowOverload (default): false
      elaborate allowOverload (enabled): true
      elaborate allowRedefineSpecialIds (default): false
      elaborate allowRedefineSpecialIds (enabled): true
      elaborate allowSpecifySpecialIds (default): false
      elaborate allowSpecifySpecialIds (enabled): true
      elaborate deadCode (default): false
      elaborate deadCode (enabled): true
      elaborate forceUsed (default): false
      elaborate forceUsed (enabled): true
      elaborate ffiStr (default): 
      elaborate ffiStr (enabled): true
      elaborate nonexhaustiveBind (default): warn
      elaborate nonexhaustiveBind (enabled): true
      elaborate nonexhaustiveExnBind (default): default
      elaborate nonexhaustiveExnBind (enabled): true
      elaborate redundantBind (default): warn
      elaborate redundantBind (enabled): true
      elaborate nonexhaustiveMatch (default): warn
      elaborate nonexhaustiveMatch (enabled): true
      elaborate nonexhaustiveExnMatch (default): default
      elaborate nonexhaustiveExnMatch (enabled): true
      elaborate redundantMatch (default): warn
      elaborate redundantMatch (enabled): true
      elaborate nonexhaustiveRaise (default): ignore
      elaborate nonexhaustiveRaise (enabled): true
      elaborate nonexhaustiveExnRaise (default): ignore
      elaborate nonexhaustiveExnRaise (enabled): true
      elaborate redundantRaise (default): warn
      elaborate redundantRaise (enabled): true
      elaborate resolveScope (default): strdec
      elaborate resolveScope (enabled): true
      elaborate sequenceNonUnit (default): warn
      elaborate sequenceNonUnit (enabled): true
      elaborate valrecConstr (default): warn
      elaborate valrecConstr (enabled): true
      elaborate warnUnused (default): true
      elaborate warnUnused (enabled): true
      elaborate allowDoDecls (default): false
      elaborate allowDoDecls (enabled): true
      elaborate allowExtendedNumConsts (default): false
      elaborate allowExtendedNumConsts (enabled): true
      elaborate allowExtendedTextConsts (default): false
      elaborate allowExtendedTextConsts (enabled): true
      elaborate allowLineComments (default): false
      elaborate allowLineComments (enabled): true
      elaborate allowOptBar (default): false
      elaborate allowOptBar (enabled): true
      elaborate allowOptSemicolon (default): false
      elaborate allowOptSemicolon (enabled): true
      elaborate allowOrPats (default): false
      elaborate allowOrPats (enabled): true
      elaborate allowRecordPunExps (default): false
      elaborate allowRecordPunExps (enabled): true
      elaborate allowSigWithtype (default): false
      elaborate allowSigWithtype (enabled): true
      elaborate allowVectorExps (default): false
      elaborate allowVectorExps (enabled): true
      elaborate allowVectorPats (default): false
      elaborate allowVectorPats (enabled): true
      emit main: true
      export header: None
      exn history: false
      generated output format: executable
      gc check: Limit
      globalize arrays: false
      globalize refs: true
      globalize int-inf as small type): true
      globalize small type: 1
      indentation: 3
      inlineIntoMain: true
      inlineLeafA: {loops = true, repeat = true, size = Some 20}
      inlineLeafB: {loops = true, repeat = true, size = Some 40}
      inlineNonRec: {small = 60, product = 320}
      input file: mlton
      keep AST: false
      keep CoreML: false
      keep def use: true
      keep dot: false
      keep Machine: false
      keep passes: []
      keep RSSA: false
      keep SSA: false
      keep SSA2: false
      keep SXML: false
      keep XML: false
      extra_: false
      lib dir: /home/mtf/devel/mlton/mlton.sulfur-space-leaks.git-wt/build/lib/mlton
      lib target dir: /home/mtf/devel/mlton/mlton.sulfur-space-leaks.git-wt/build/lib/mlton/targets/self
      llvmTBAA: none
      loop unrolling limit: 150
      loop unswitching limit: 300
      mark cards: true
      max function size: 10000
      mlb path vars: [{var = SML_LIB, path = $(LIB_MLTON_DIR)/sml}]
      native commented: 0
      elim AL redundant: true
      native live stack: false
      native optimize: 1
      native move hoist: true
      native copy prop: true
      native copy prop cutoff: 1000
      native cutoff: 100
      native live transfer: 8
      native shuffle: true
      native ieee fp: false
      native split: Some 20000
      optFuel: None
      optimizationPasses: []
      polyvariance: Some {hofo = true, rounds = 2, small = 30, product = 300}
      prefer abs paths: false
      prof passes: []
      profile: None
      profile block: false
      profile branch: false
      profile C: []
      profile IL: ProfileSource
      profile include/exclude: [(Seq [Star [.], Or [Seq [Seq [[$], [(], [S], [M], [L], [_], [L], [I], [B], [)]]]], Star [.]], false)]
      profile raise: false
      profile stack: false
      profile val: false
      show basis: None
      show basis compact: false
      show basis def: true
      show basis flat: true
      show def-use: None
      show types: true
      staticAllocInternalPtrs: Static
      staticInitArrays: true
      staticAllocArrays: true
      staticInitObjects: Some false
      staticAllocObjects: true
      staticAllocWordVectorConsts: true
      bool type splitting method: smart
      stop passes: []
      target: self
      target arch: AMD64
      target OS: Linux
      type check: false
      verbosity: Detail
      warn unrecognized annotation: true
      warn deprecated features: true
      zone cut depth: 100
   Compile SML starting
      frontend starting
         parseAndElaborate starting
            processDefUse starting
            processDefUse finished in 0.45 + 1.33 (75% GC)
            parseAndElaborate.post stats
               coreML program size = 519,054,832 bytes
               property list numPeeks = 78470245
               property list maxLength = 3
               property list average position = 0.256
               hash set numPeeks = 511339
               hash set average position = 1.033
               live data = 520,033,568 bytes
         parseAndElaborate finished in 18.27 + 6.80 (27% GC)
         deadCode starting
            deadCode.post stats
               coreML program size = 479,158,536 bytes
               property list numPeeks = 78852085
               property list maxLength = 3
               property list average position = 0.256
               hash set numPeeks = 511339
               hash set average position = 1.033
               live data = 480,159,024 bytes
         deadCode finished in 2.29 + 0.00 (0% GC)
         defunctorize starting
            defunctorize.post stats
               xml program size = 254,285,416 bytes
               num primexps in program = 476412
               num types in program = 685804
               num types in hash table = 700475
               types hash table size = 142,161,800 bytes
               property list numPeeks = 85828950
               property list maxLength = 4
               property list average position = 0.276
               hash set numPeeks = 1407843
               hash set average position = 0.605
               live data = 314,821,448 bytes
         defunctorize finished in 4.13 + 0.00 (0% GC)
         frontend.post stats
            xml program size = 254,285,416 bytes
            num primexps in program = 476412
            num types in program = 685804
            num types in hash table = 700475
            types hash table size = 142,161,800 bytes
            property list numPeeks = 87442710
            property list maxLength = 4
            property list average position = 0.271
            hash set numPeeks = 1407843
            hash set average position = 0.605
            live data = 314,821,448 bytes
      frontend finished in 27.17 + 6.80 (20% GC)
      xmlSimplify starting
         xmlTypeCheck starting
         xmlTypeCheck finished in 0.92 + 0.00 (0% GC)
         xmlShrink starting
            xmlShrink.post stats
               xml program size = 192,970,128 bytes
               num primexps in program = 271752
               num types in program = 671789
               num types in hash table = 703562
               types hash table size = 132,691,952 bytes
               property list numPeeks = 101870605
               property list maxLength = 4
               property list average position = 0.235
               hash set numPeeks = 2444197
               hash set average position = 0.798
               live data = 278,232,072 bytes
         xmlShrink finished in 2.88 + 0.01 (0% GC)
         xmlSimplifyTypes starting
            xmlSimplifyTypes.post stats
               xml program size = 275,020,904 bytes
               num primexps in program = 271752
               num types in program = 671751
               num types in hash table = 703581
               types hash table size = 198,207,360 bytes
               property list numPeeks = 106494456
               property list maxLength = 4
               property list average position = 0.237
               hash set numPeeks = 3115965
               hash set average position = 0.859
               live data = 360,296,808 bytes
         xmlSimplifyTypes finished in 3.30 + 0.00 (0% GC)
         xmlTypeCheck starting
         xmlTypeCheck finished in 0.80 + 0.00 (0% GC)
         xmlSimplify.post stats
            xml program size = 249,673,536 bytes
            num primexps in program = 271752
            num types in program = 671751
            num types in hash table = 703592
            types hash table size = 186,440,992 bytes
            property list numPeeks = 113584468
            property list maxLength = 4
            property list average position = 0.260
            hash set numPeeks = 4080235
            hash set average position = 0.908
            live data = 334,950,904 bytes
      xmlSimplify finished in 10.52 + 0.01 (0% GC)
      monomorphise starting
         monomorphise.post stats
            sxml program size = 214,088,712 bytes
            num primexps in program = 801683
            num types in program = 100798
            num types in hash table = 803195
            types hash table size = 200,703,040 bytes
            property list numPeeks = 125674637
            property list maxLength = 4
            property list average position = 0.264
            hash set numPeeks = 7265158
            hash set average position = 0.927
            live data = 434,320,704 bytes
      monomorphise finished in 4.55 + 0.00 (0% GC)
      sxmlSimplify starting
         sxmlTypeCheck starting
         sxmlTypeCheck finished in 0.68 + 0.00 (0% GC)
         sxmlShrink1 starting
            sxmlShrink1.post stats
               sxml program size = 142,723,384 bytes
               num primexps in program = 553397
               num types in program = 40090
               num types in hash table = 809136
               types hash table size = 201,511,016 bytes
               property list numPeeks = 142311157
               property list maxLength = 4
               property list average position = 0.240
               hash set numPeeks = 7551504
               hash set average position = 0.930
               live data = 370,650,720 bytes
         sxmlShrink1 finished in 4.33 + 0.00 (0% GC)
         implementSuffix starting
            implementSuffix.post stats
               sxml program size = 142,725,968 bytes
               num primexps in program = 553404
               num types in program = 40090
               num types in hash table = 809136
               types hash table size = 201,511,016 bytes
               property list numPeeks = 143042346
               property list maxLength = 4
               property list average position = 0.239
               hash set numPeeks = 7551509
               hash set average position = 0.930
               live data = 370,653,192 bytes
         implementSuffix finished in 3.10 + 0.00 (0% GC)
         sxmlShrink2 starting
            sxmlShrink2.post stats
               sxml program size = 139,270,832 bytes
               num primexps in program = 539179
               num types in program = 38488
               num types in hash table = 809136
               types hash table size = 201,511,016 bytes
               property list numPeeks = 150763144
               property list maxLength = 4
               property list average position = 0.228
               hash set numPeeks = 7551509
               hash set average position = 0.930
               live data = 367,375,656 bytes
         sxmlShrink2 finished in 3.99 + 0.00 (0% GC)
         implementExceptions starting
            implementExceptions.post stats
               sxml program size = 145,588,864 bytes
               num primexps in program = 567720
               num types in program = 39070
               num types in hash table = 809704
               types hash table size = 201,588,256 bytes
               property list numPeeks = 151632168
               property list maxLength = 4
               property list average position = 0.226
               hash set numPeeks = 7560249
               hash set average position = 0.930
               live data = 373,705,560 bytes
         implementExceptions finished in 3.22 + 0.00 (0% GC)
         sxmlShrink3 starting
            sxmlShrink3.post stats
               sxml program size = 143,490,568 bytes
               num primexps in program = 557233
               num types in program = 39051
               num types in hash table = 809704
               types hash table size = 201,588,256 bytes
               property list numPeeks = 159564241
               property list maxLength = 4
               property list average position = 0.215
               hash set numPeeks = 7560249
               hash set average position = 0.930
               live data = 350,383,984 bytes
         sxmlShrink3 finished in 3.46 + 1.40 (29% GC)
         polyvariance starting
            duplicate1 starting
               duplicate1.post stats
                  sxml program size = 161,077,696 bytes
                  num primexps in program = 641428
                  num types in program = 32069
                  num types in hash table = 809704
                  types hash table size = 201,588,096 bytes
                  property list numPeeks = 176767647
                  property list maxLength = 4
                  property list average position = 0.196
                  hash set numPeeks = 7560249
                  hash set average position = 0.930
                  live data = 368,773,016 bytes
            duplicate1 finished in 3.83 + 0.00 (0% GC)
            duplicate2 starting
               duplicate2.post stats
                  sxml program size = 160,973,144 bytes
                  num primexps in program = 640957
                  num types in program = 31993
                  num types in hash table = 809704
                  types hash table size = 201,588,096 bytes
                  property list numPeeks = 188842383
                  property list maxLength = 4
                  property list average position = 0.184
                  hash set numPeeks = 7560249
                  hash set average position = 0.930
                  live data = 368,677,376 bytes
            duplicate2 finished in 3.51 + 0.00 (0% GC)
            polyvariance.post stats
               sxml program size = 160,973,144 bytes
               num primexps in program = 640957
               num types in program = 31993
               num types in hash table = 809704
               types hash table size = 201,588,096 bytes
               property list numPeeks = 189650957
               property list maxLength = 4
               property list average position = 0.183
               hash set numPeeks = 7560249
               hash set average position = 0.930
               live data = 368,677,312 bytes
         polyvariance finished in 9.86 + 0.00 (0% GC)
         sxmlShrink4 starting
            sxmlShrink4.post stats
               sxml program size = 160,973,144 bytes
               num primexps in program = 640957
               num types in program = 31993
               num types in hash table = 809704
               types hash table size = 201,588,096 bytes
               property list numPeeks = 198637344
               property list maxLength = 4
               property list average position = 0.175
               hash set numPeeks = 7560249
               hash set average position = 0.930
               live data = 369,250,640 bytes
         sxmlShrink4 finished in 3.64 + 0.69 (16% GC)
         sxmlTypeCheck starting
         sxmlTypeCheck finished in 0.42 + 0.00 (0% GC)
         sxmlSimplify.post stats
            sxml program size = 160,973,144 bytes
            num primexps in program = 640957
            num types in program = 31993
            num types in hash table = 809985
            types hash table size = 201,626,312 bytes
            property list numPeeks = 203111526
            property list maxLength = 4
            property list average position = 0.174
            hash set numPeeks = 7799730
            hash set average position = 0.933
            live data = 369,287,696 bytes
      sxmlSimplify finished in 35.34 + 2.09 (6% GC)
      closureConvert starting
         flow analysis starting
         flow analysis finished in 0.81 + 0.00 (0% GC)
         free variables starting
         free variables finished in 0.24 + 0.00 (0% GC)
         globalize starting
         globalize finished in 0.14 + 0.00 (0% GC)
         convert starting
         convert finished in 1.68 + 2.27 (57% GC)
         closureConvert.post stats
            ssa program size = 301,525,480 bytes
            num globals = 157140
            num vars in main = 18060
            num blocks in main = 7837
            num functions in program = 37888
            num blocks in program = 510116
            num statements in program = 535192
            num types in program = 39050
            num types in hash table = 76377
            types hash table size = 17,015,504 bytes
            property list numPeeks = 225445256
            property list maxLength = 4
            property list average position = 0.159
            hash set numPeeks = 8001993
            hash set average position = 0.927
            live data = 320,999,536 bytes
      closureConvert finished in 4.85 + 2.27 (32% GC)
      ssaSimplify starting
         ssaTypeCheck starting
            checkScopes starting
            checkScopes finished in 0.90 + 0.00 (0% GC)
         ssaTypeCheck finished in 1.54 + 0.00 (0% GC)
         removeUnused1 starting
            removeUnused1.post stats
               ssa program size = 229,747,312 bytes
               num globals = 114650
               num vars in main = 14805
               num blocks in main = 5238
               num functions in program = 35911
               num blocks in program = 377062
               num statements in program = 468084
               num types in program = 35690
               num types in hash table = 77873
               types hash table size = 29,831,824 bytes
               property list numPeeks = 264354386
               property list maxLength = 4
               property list average position = 0.151
               hash set numPeeks = 8765627
               hash set average position = 0.898
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         removeUnused1 finished in 4.16 + 0.00 (0% GC)
         introduceLoops1 starting
            introduceLoops1.post stats
               ssa program size = 234,093,320 bytes
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               live data = 267,977,104 bytes
         introduceLoops1 finished in 2.04 + 0.00 (0% GC)
         loopInvariant1 starting
            loopInvariant1.post stats
               ssa program size = 231,401,560 bytes
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               live data = 265,285,288 bytes
         loopInvariant1 finished in 2.77 + 0.00 (0% GC)
         inlineLeaf1 starting
            inlineLeaf1.post stats
               ssa program size = 219,015,160 bytes
               num globals = 114650
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         inlineLeaf1 finished in 2.99 + 0.00 (0% GC)
         inlineLeaf2 starting
            inlineLeaf2.post stats
               ssa program size = 220,754,824 bytes
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         inlineLeaf2 finished in 2.03 + 0.93 (31% GC)
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               computeDominators starting
               computeDominators finished in 0.05 + 0.00 (0% GC)
               compute ADom starting
               compute ADom finished in 0.02 + 0.00 (0% GC)
            analyzeDom finished in 0.14 + 0.00 (0% GC)
            transform starting
            transform finished in 0.55 + 0.00 (0% GC)
            contify1.post stats
               ssa program size = 201,686,896 bytes
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               live data = 227,910,328 bytes
         contify1 finished in 1.92 + 0.00 (0% GC)
         localFlatten1 starting
            localFlatten1.post stats
               ssa program size = 196,877,584 bytes
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               live data = 223,429,072 bytes
         localFlatten1 finished in 1.80 + 0.00 (0% GC)
         constantPropagation starting
            fixed point starting
            fixed point finished in 0.67 + 0.00 (0% GC)
            constantPropagation.post stats
               ssa program size = 157,989,776 bytes
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               live data = 184,542,816 bytes
         constantPropagation finished in 3.16 + 0.00 (0% GC)
         duplicateGlobals1 skipped
         splitTypes1 starting
            splitTypes1.post stats
               ssa program size = 326,405,288 bytes
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         splitTypes1 finished in 4.52 + 0.00 (0% GC)
         useless starting
            useless.post stats
               ssa program size = 151,323,424 bytes
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               live data = 185,974,072 bytes
         useless finished in 3.64 + 2.36 (39% GC)
         loopUnroll1 skipped
         removeUnused2 starting
            removeUnused2.post stats
               ssa program size = 139,361,136 bytes
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         removeUnused2 finished in 1.94 + 0.00 (0% GC)
         duplicateGlobals2 starting
            duplicateGlobals2.post stats
               ssa program size = 144,020,320 bytes
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         duplicateGlobals2 finished in 1.22 + 0.00 (0% GC)
         splitTypes2 starting
            splitTypes2.post stats
               ssa program size = 294,194,352 bytes
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         splitTypes2 finished in 7.33 + 0.00 (0% GC)
         simplifyTypes starting
            simplifyTypes.post stats
               ssa program size = 125,498,936 bytes
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         simplifyTypes finished in 1.97 + 0.00 (0% GC)
         polyEqual starting
            polyEqual.post stats
               ssa program size = 130,770,840 bytes
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         polyEqual finished in 1.32 + 0.00 (0% GC)
         polyHash starting
            polyHash.post stats
               ssa program size = 130,770,840 bytes
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         polyHash finished in 1.30 + 0.00 (0% GC)
         introduceLoops2 starting
            introduceLoops2.post stats
               ssa program size = 130,776,864 bytes
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         introduceLoops2 finished in 1.25 + 0.00 (0% GC)
         loopInvariant2 starting
            loopInvariant2.post stats
               ssa program size = 125,660,048 bytes
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         loopInvariant2 finished in 1.62 + 0.00 (0% GC)
         loopUnswitch1 skipped
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            analyzeDom finished in 0.09 + 0.00 (0% GC)
            transform starting
            transform finished in 0.34 + 0.00 (0% GC)
            contify2.post stats
               ssa program size = 124,377,264 bytes
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         contify2 finished in 1.63 + 0.00 (0% GC)
         inlineNonRecursive starting
            inlineNonRecursive.post stats
               ssa program size = 189,353,288 bytes
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         inlineNonRecursive finished in 2.19 + 0.61 (22% GC)
         localFlatten2 starting
            localFlatten2.post stats
               ssa program size = 186,667,112 bytes
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         localFlatten2 finished in 1.53 + 0.34 (18% GC)
         removeUnused3 starting
            removeUnused3.post stats
               ssa program size = 186,381,872 bytes
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         removeUnused3 finished in 2.06 + 0.00 (0% GC)
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               computeDominators finished in 0.02 + 0.00 (0% GC)
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            analyzeDom finished in 0.06 + 0.00 (0% GC)
            transform starting
            transform finished in 0.38 + 0.00 (0% GC)
            contify3.post stats
               ssa program size = 186,314,328 bytes
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         contify3 finished in 1.70 + 0.00 (0% GC)
         introduceLoops3 starting
            introduceLoops3.post stats
               ssa program size = 186,331,152 bytes
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         introduceLoops3 finished in 1.24 + 0.00 (0% GC)
         loopInvariant3 starting
            loopInvariant3.post stats
               ssa program size = 185,984,360 bytes
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         loopInvariant3 finished in 1.67 + 0.36 (18% GC)
         localRef starting
            multi starting
            multi finished in 0.20 + 0.00 (0% GC)
            localRef.post stats
               ssa program size = 185,654,368 bytes
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         localRef finished in 2.38 + 0.00 (0% GC)
         flatten starting
            flatten.post stats
               ssa program size = 175,187,832 bytes
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         flatten finished in 1.83 + 0.42 (19% GC)
         localFlatten3 starting
            localFlatten3.post stats
               ssa program size = 175,144,784 bytes
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         localFlatten3 finished in 1.59 + 0.00 (0% GC)
         combineConversions starting
            combineConversions.post stats
               ssa program size = 175,516,832 bytes
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         combineConversions finished in 1.53 + 0.00 (0% GC)
         commonArg starting
            commonArg.post stats
               ssa program size = 173,713,504 bytes
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         commonArg finished in 1.85 + 0.53 (22% GC)
         commonSubexp1 starting
            commonSubexp1.post stats
               ssa program size = 165,034,776 bytes
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         commonSubexp1 finished in 2.05 + 0.00 (0% GC)
         commonBlock starting
            commonBlock.post stats
               ssa program size = 160,723,840 bytes
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         commonBlock finished in 1.49 + 0.00 (0% GC)
         shareZeroVec starting
            shareZeroVec.post stats
               ssa program size = 165,809,904 bytes
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         shareZeroVec finished in 1.30 + 0.00 (0% GC)
         redundantTests starting
            redundantTests.post stats
               ssa program size = 161,424,592 bytes
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         redundantTests finished in 1.42 + 0.24 (14% GC)
         redundant starting
            redundant.post stats
               ssa program size = 161,409,392 bytes
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         redundant finished in 1.28 + 0.00 (0% GC)
         loopUnswitch2 skipped
         knownCase2 starting
            knownCase2.post stats
               ssa program size = 177,549,592 bytes
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               num types in program = 7812
               num types in hash table = 166043
               types hash table size = 60,532,192 bytes
               property list numPeeks = 513362887
               property list maxLength = 4
               property list average position = 0.153
               hash set numPeeks = 16819952
               hash set average position = 7.347
               live data = 238,074,448 bytes
         knownCase2 finished in 2.47 + 0.27 (10% GC)
         loopUnroll2 skipped
         commonSubexp2 skipped
         removeUnused4 starting
            removeUnused4.post stats
               ssa program size = 170,259,808 bytes
               num globals = 16805
               num vars in main = 18285
               num blocks in main = 10005
               num functions in program = 2225
               num blocks in program = 295769
               num statements in program = 305913
               num types in program = 7758
               num types in hash table = 166043
               types hash table size = 60,898,664 bytes
               property list numPeeks = 526549364
               property list maxLength = 4
               property list average position = 0.150
               hash set numPeeks = 16824089
               hash set average position = 7.346
               live data = 232,002,944 bytes
         removeUnused4 finished in 2.89 + 0.00 (0% GC)
         ssaOrderFunctions starting
            ssaOrderFunctions.post stats
               ssa program size = 170,259,808 bytes
               num globals = 16805
               num vars in main = 18285
               num blocks in main = 10005
               num functions in program = 2225
               num blocks in program = 295769
               num statements in program = 305913
               num types in program = 7758
               num types in hash table = 1...
 
[truncated message content]

[MLton-commit] [MLton/mlton] fd0d28: Change `MLton.size`'s type to `'a -> IntInf.int`

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: fd0d28fd871319e29909fadfe1d04cb379ed046a
      https://github.com/MLton/mlton/commit/fd0d28fd871319e29909fadfe1d04cb379ed046a
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-23 (Mon, 23 Sep 2019)

  Changed paths:
    M basis-library/mlton/mlton.sig
    M basis-library/mlton/mlton.sml
    M doc/examples/size/size.sml
    M doc/guide/src/MLtonStructure.adoc
    M lib/stubs/mlton-stubs-for-polyml/mlton.sml
    M lib/stubs/mlton-stubs-for-smlnj/mlton.sml
    M lib/stubs/mlton-stubs/mlton.sig
    M lib/stubs/mlton-stubs/mlton.sml
    M mlton/atoms/con-.fun
    M mlton/atoms/tycon.fun
    M mlton/control/control.sml
    M mlton/elaborate/elaborate-env.fun
    M regression/mlton.share.sml
    M regression/size.sml
    M regression/thread-switch-size.sml

  Log Message:
  -----------
  Change `MLton.size`'s type to `'a -> IntInf.int`

With 64-bit systems, the size of a single object can exceed that
representable by a signed 32-bit integer.


  Commit: ec6fd6b08dbb907dc7345950ea8b33923a90d28f
      https://github.com/MLton/mlton/commit/ec6fd6b08dbb907dc7345950ea8b33923a90d28f
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-23 (Mon, 23 Sep 2019)

  Changed paths:
    M runtime/gc/dfs-mark.c
    M runtime/gc/dfs-mark.h
    M runtime/gc/gc_state.h
    M runtime/gc/mark-compact.c
    M runtime/gc/share.c
    M runtime/gc/size.c

  Log Message:
  -----------
  Refactor `dfsMark` to avoid special-purpose functions

Use a global `GC_markState markState` to communicate parameters to
`dfsMark`.  This avoid the need for special-purpose functions that
call `dfsMarkByMode` with particular arguments.


  Commit: 541989f0b6b4a8ae8084bbe43680f7982d36e7d7
      https://github.com/MLton/mlton/commit/541989f0b6b4a8ae8084bbe43680f7982d36e7d7
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-23 (Mon, 23 Sep 2019)

  Changed paths:
    M basis-library/mlton/mlton.sig
    M basis-library/mlton/mlton.sml
    M basis-library/primitive/prim-mlton.sml
    M doc/guide/src/MLtonStructure.adoc
    M runtime/gc/size.c
    M runtime/gc/size.h

  Log Message:
  -----------
  Add `MLton.sizeAll: unit -> IntInf.int`

`MLton.sizeAll` returns the size of reachable live data, computed using DFS
marking (and unmarking).  Thus, it takes time proportional to live data, but
should be cheaper than a major copying GC and much cheaper than a major
mark-compact GC.


  Commit: b83e6df0e4f255155d068ab237d6a08f8087efa6
      https://github.com/MLton/mlton/commit/b83e6df0e4f255155d068ab237d6a08f8087efa6
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-23 (Mon, 23 Sep 2019)

  Changed paths:
    M lib/stubs/mlton-stubs/mlton.sig
    M lib/stubs/mlton-stubs/mlton.sml
    M mlton/control/control.sml

  Log Message:
  -----------
  Report `live data = ??? bytes` at `-verbose 3`


  Commit: 967845479d81b06258ef27435591d091bb0ee0a0
      https://github.com/MLton/mlton/commit/967845479d81b06258ef27435591d091bb0ee0a0
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-24 (Tue, 24 Sep 2019)

  Changed paths:
    M mlton/atoms/hash-type.fun

  Log Message:
  -----------
  Fix `types hash table size = ??? bytes" for XML/SXML


  Commit: 3faad1bccfefe5e3d0da6b7616155085255e8cca
      https://github.com/MLton/mlton/commit/3faad1bccfefe5e3d0da6b7616155085255e8cca
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-25 (Wed, 25 Sep 2019)

  Changed paths:
    M Makefile

  Log Message:
  -----------
  Augment `MLTON_NAME` for {debugged,traced,profiled-{alloc,count,time}} targets


  Commit: ef22d74f44a87eef0018ef087d0be519f33ec049
      https://github.com/MLton/mlton/commit/ef22d74f44a87eef0018ef087d0be519f33ec049
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-26 (Thu, 26 Sep 2019)

  Changed paths:
    M mlton/xml/xml-tree.fun
    M mlton/xml/xml-tree.sig

  Log Message:
  -----------
  Add `XmlTree.Program.dropProfile`


  Commit: 7731e9fa7645882bc6cc0083c48dc22c03baafb7
      https://github.com/MLton/mlton/commit/7731e9fa7645882bc6cc0083c48dc22c03baafb7
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-26 (Thu, 26 Sep 2019)

  Changed paths:
    M mlton/core-ml/core-ml.fun
    M mlton/core-ml/core-ml.sig

  Log Message:
  -----------
  Add `CoreML.Program.dropProfile`


  Commit: 41e2a29cdd7068936589c423d33dd7e77c5a475a
      https://github.com/MLton/mlton/commit/41e2a29cdd7068936589c423d33dd7e77c5a475a
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-27 (Fri, 27 Sep 2019)

  Changed paths:
    M mlton/ssa/shrink.fun
    M mlton/ssa/shrink2.fun

  Log Message:
  -----------
  Shrink non-tail return with eta-raise handle

Simplify a `Return.NonTail {cont, handler = Handler.Handle hnd}` where the `hnd`
block is an eta-raise block (but the `cont` block is not an eta-return block) to
`Return.NonTail {cont = cont, handler = Handler.Caller}`.


  Commit: a5e349db7a949e34e1225a05d42c01bd8bd2136f
      https://github.com/MLton/mlton/commit/a5e349db7a949e34e1225a05d42c01bd8bd2136f
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-27 (Fri, 27 Sep 2019)

  Changed paths:
    M mlton/xml/shrink.fun

  Log Message:
  -----------
  Simplify `e handle exn => raise exn` to `e` in `xmlShrink`


  Commit: b9da6689852f47a0485983464fa7301a28b356ca
      https://github.com/MLton/mlton/commit/b9da6689852f47a0485983464fa7301a28b356ca
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-28 (Sat, 28 Sep 2019)

  Changed paths:
    M mlton/xml/polyvariance.fun

  Log Message:
  -----------
  Demark rounds of `duplicate` in `polyvariance` diagnostics


  Commit: 4d9f4420511ad04228be4a4de324fc5ec4123ee1
      https://github.com/MLton/mlton/commit/4d9f4420511ad04228be4a4de324fc5ec4123ee1
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-30 (Mon, 30 Sep 2019)

  Changed paths:
    M mlton/atoms/cases.fun
    M mlton/atoms/cases.sig

  Log Message:
  -----------
  Add `Cases.exists`


  Commit: f585511f4bec5b44086eaf069e8770b00090ce47
      https://github.com/MLton/mlton/commit/f585511f4bec5b44086eaf069e8770b00090ce47
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-30 (Mon, 30 Sep 2019)

  Changed paths:
    M mlton/xml/xml-tree.fun

  Log Message:
  -----------
  Update `XmlTree.Exp.enterLeave` to avoid handler for non-raising

The `XmlTee.Exp.enterLeave` function is used to add profiling
information to XML expressions; it transforms an expression of the
form:

    let
      ... decs ...
    in
      res
    end

to

    let
      val z =
        let
          Enter
          ... decs ...
          Leave
        in
          res
        end
        handle exn => let
                        Leave
                        val x = raise exn
                      in
                        x
                      end
     in
       z
     end

The `handler` wrapper is unnecessary when the original expression
cannot raise; in particular, for a curried function, the body of the
outer function does not need a `handler` wrapper.  This avoids
unnecessarily perturbing the program (relative to the program without
profiling).  For an expression that does not raise, it now simply
transforms to:

    let
      Enter
      ... decs ...
      Leave
    in
      res
    end


  Commit: f47cde6ae20e2cb07193253cf9ce49e874bc7130
      https://github.com/MLton/mlton/commit/f47cde6ae20e2cb07193253cf9ce49e874bc7130
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-30 (Mon, 30 Sep 2019)

  Changed paths:
    M mlton/Makefile

  Log Message:
  -----------
  Ensure `./mlton/control/version.sml` is created for `def-use` target


  Commit: ddfbf61526952ed4ce50999a52b69d9854225f95
      https://github.com/MLton/mlton/commit/ddfbf61526952ed4ce50999a52b69d9854225f95
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-01 (Tue, 01 Oct 2019)

  Changed paths:
    M mlton/xml/polyvariance.fun

  Log Message:
  -----------
  Tweak `Polyvariance.lambdaSize` to ignore eta-handlers added by profiling


  Commit: 29f85947775aa80da01a1966c7a30c79c6a6046c
      https://github.com/MLton/mlton/commit/29f85947775aa80da01a1966c7a30c79c6a6046c
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-01 (Tue, 01 Oct 2019)

  Changed paths:
    M mlton/ssa/profile.fun
    M mlton/ssa/profile2.fun

  Log Message:
  -----------
  Handle jumps to start block in `Ssa{,2}.Profile.addProfileFunction`

If an SSA{,2} function has an internal jump to the start block, then
adding an `Enter <f>` profile statement to the start block will result
in mis-matched sources.  When entering the function, the source list
for the start block will be empty, but when jumping to the start block
from within the function, the source list will be the singleton
`[<f>]`.

When an SSA{,2} function has an internal jump to the start block, then
create a new start block for the `Enter <f>` profile statement.


  Commit: 69b70f20579747d8284177cba7800ca6f4a8e4aa
      https://github.com/MLton/mlton/commit/69b70f20579747d8284177cba7800ca6f4a8e4aa
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-01 (Tue, 01 Oct 2019)

  Changed paths:
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun
    M mlton/ssa/profile.fun
    M mlton/ssa/profile2.fun

  Log Message:
  -----------
  Add `-profile-block {false|true}` expert option

Control whether or not to add `Enter`/`Leave` statements for each
block when profiling SSA{,2}.


  Commit: 01b87480a3ebf9b49087d1c01173cda87c3812f3
      https://github.com/MLton/mlton/commit/01b87480a3ebf9b49087d1c01173cda87c3812f3
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-03 (Thu, 03 Oct 2019)

  Changed paths:
    M mlton/ssa/simplify2.fun

  Log Message:
  -----------
  Disable `Zone` pass by default

See MLton/mlton#334.

When self-compiling with `Zone` enabled, the resulting compiler (when
self-compiling) has over 2GB live data at the end of `amd64Codegen`.
However, the should be very little live data at the end of
`amd64Codegen`, because the IR program is no longer live.  The `Zone`
pass is known to not be safe-for-space.

The `Zone` pass only transforms SSA2 functions with over 10000 blocks.
MLton's `main` SSA2 function only recently crossed the threshold that
results in the `Zone` pass transforming the `main` SSA2 function,
which is why this space leak only recently became a problem.


  Commit: d39e63e8a78e98bd33563a1fa4460bf3911e015a
      https://github.com/MLton/mlton/commit/d39e63e8a78e98bd33563a1fa4460bf3911e015a
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-04 (Fri, 04 Oct 2019)

  Changed paths:
    M Makefile.config
    M mlton/Makefile

  Log Message:
  -----------
  Disable `Zone` pass for bootstrap

See MLton/mlton#334.

When self-compiling with `Zone` enabled, the resulting compiler (when
self-compiling) has over 2GB live data at the end of `amd64Codegen`.
However, the should be very little live data at the end of
`amd64Codegen`, because the IR program is no longer live.  The `Zone`
pass is known to not be safe-for-space.

The `Zone` pass only transforms SSA2 functions with over 10000 blocks.
MLton's `main` SSA2 function only recently crossed the threshold that
results in the `Zone` pass transforming the `main` SSA2 function,
which is why this space leak only recently became a problem.


  Commit: 6009c5e577267cac803c4d3822ed9c857f5210f3
      https://github.com/MLton/mlton/commit/6009c5e577267cac803c4d3822ed9c857f5210f3
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-11 (Fri, 11 Oct 2019)

  Changed paths:
    M mlton/backend/bounce-vars.fun
    M mlton/backend/rssa-restore.fun
    M mlton/backend/rssa-restore.sig

  Log Message:
  -----------
  Refactor `RssaRestore`

Change type of `RssaRestore.restoreFunction`
from `{main:Function.t} -> Function.t -> Function.t`
to `{main:Function.t} -> {main:Function.t, restore: Function.t -> Function.t}`.

Also, restore the `main` function.


  Commit: 4fd9d2856d225f8be91355479a31e56b8161aa71
      https://github.com/MLton/mlton/commit/4fd9d2856d225f8be91355479a31e56b8161aa71
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-11 (Fri, 11 Oct 2019)

  Changed paths:
    M mlton/backend/rssa-live.sig
    A mlton/backend/rssa-shrink.fun
    A mlton/backend/rssa-shrink.sig
    M mlton/backend/rssa-simplify.fun
    M mlton/backend/rssa-tree.fun
    M mlton/backend/rssa-tree.sig
    M mlton/backend/rssa.fun
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb

  Log Message:
  -----------
  Refactor `RssaTree.Program.shrink` to separate module


  Commit: 5e33ab307bdf49486a8d95e4604ba32b1a946b0f
      https://github.com/MLton/mlton/commit/5e33ab307bdf49486a8d95e4604ba32b1a946b0f
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-11 (Fri, 11 Oct 2019)

  Changed paths:
    M mlton/backend/rssa-shrink.sig
    M mlton/backend/rssa-simplify.fun
    M mlton/backend/rssa-tree.fun
    M mlton/backend/rssa-tree.sig
    A mlton/backend/rssa-type-check.fun
    A mlton/backend/rssa-type-check.sig
    M mlton/backend/rssa.fun
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb
    M mlton/main/compile.fun

  Log Message:
  -----------
  Refactor `RssaTree.Program.typeCheck` to separate module


  Commit: 3da3bcdfa963d7e3a8b39461d76c1384e35102f1
      https://github.com/MLton/mlton/commit/3da3bcdfa963d7e3a8b39461d76c1384e35102f1
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-11 (Fri, 11 Oct 2019)

  Changed paths:
    M mlton/backend/rssa-shrink.fun
    M mlton/backend/rssa-shrink.sig

  Log Message:
  -----------
  Refactor `RssaShrink.shrinkFunction`

Now perform copy propagation and jump chaining in one pass and allow
shrinking to be performed per-function, rather than only per-program.


  Commit: 6bac20e9ae36adfe8972a381daaf37b8f96d2c1d
      https://github.com/MLton/mlton/commit/6bac20e9ae36adfe8972a381daaf37b8f96d2c1d
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-11 (Fri, 11 Oct 2019)

  Changed paths:
    M mlton/backend/bounce-vars.fun

  Log Message:
  -----------
  Perform per-function shrinking in `BounceVars`

See MLton/mlton#334.

This addresses an issue where the program size spikes at `bounceVars`,
through `implementHandlers`, until `rssaShrink2`.


  Commit: f3e95a0efa7d87799cf70cdbe4deda2fa4a91311
      https://github.com/MLton/mlton/commit/f3e95a0efa7d87799cf70cdbe4deda2fa4a91311
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-14 (Mon, 14 Oct 2019)

  Changed paths:
    M runtime/gc/call-stack.c
    M runtime/gc/call-stack.h
    M runtime/gc/cheney-copy.c
    M runtime/gc/dfs-mark.c
    M runtime/gc/dfs-mark.h
    M runtime/gc/foreach.c
    M runtime/gc/foreach.h
    M runtime/gc/forward.c
    M runtime/gc/forward.h
    M runtime/gc/gc_state.h
    M runtime/gc/init.c
    M runtime/gc/invariant.c
    M runtime/gc/invariant.h
    M runtime/gc/mark-compact.c
    M runtime/gc/mark-compact.h
    M runtime/gc/profiling.c
    M runtime/gc/profiling.h
    M runtime/gc/size.c
    M runtime/gc/translate.c
    M runtime/gc/translate.h

  Log Message:
  -----------
  Refactor GC `foreach{Objptr,StackFrame}` functions to use closures

Avoids polluting `GC_state` with per-function state.


  Commit: 304cfbf35968f341c91243a01ae9dc36a2879d16
      https://github.com/MLton/mlton/commit/304cfbf35968f341c91243a01ae9dc36a2879d16
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-14 (Mon, 14 Oct 2019)

  Changed paths:
    M mlton/backend/bounce-vars.fun

  Log Message:
  -----------
  Share `Property` definitions for variables in `BounceVars`

See MLton/mlton#334.

This was meant to addresses an issue where the during `bounceVars`,
the `property list maxLength` jumped from 4 to 761 during `bounceVars`
on a self-compile.  (Although, it didn't seem to negatively effect
property list accesses, since the `property list average position`
only jumped from 0.148 to 0.172.)  However, it does not actually
reduce the `property list maxLength` jump, which seems to be coming
from a different pass.


  Commit: c9c85e6ebb3ce2c8caad59a995898cc09be916f7
      https://github.com/MLton/mlton/commit/c9c85e6ebb3ce2c8caad59a995898cc09be916f7
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-14 (Mon, 14 Oct 2019)

  Changed paths:
    M mlton/backend/rssa-live.fun

  Log Message:
  -----------
  Destroy `Property` for variables in `RssaLive`

See MLton/mlton#334.

This addresses an issue where the during `bounceVars`, the `property
list maxLength` jumped from 4 to 761 during `bounceVars` on a
self-compile.  (Although, it didn't seem to negatively effect property
list accesses, since the `property list average position` only jumped
from 0.148 to 0.172.)  For `RssaLive.Live.live` invoked from
`BounceVars`, all variables, including "global" variables defined in
the `main` function, are considered; thus, a "global" variable has the
`RssaLive.varInfo` property created for each RSSA function in which it
appears.  (For `RssaLive.Live.live` invoked from `Backend`, "global"
variables are not considered, so `property list maxLength` does not
increase.)


  Commit: 21b1026adf3150c2af2422c2cdb8a4831a860458
      https://github.com/MLton/mlton/commit/21b1026adf3150c2af2422c2cdb8a4831a860458
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-14 (Mon, 14 Oct 2019)

  Changed paths:
    M mlton/backend/rssa-restore.fun
    M mlton/ssa/restore.fun
    M mlton/ssa/restore2.fun

  Log Message:
  -----------
  Reuse `Function.dominatorTree` result in `Restore` for SSA,SSA2,RSSA

This is not strictly required for SSA and SSA2, which memoize the
dominator tree computation for a function, but RSSA does not memoize
the dominator tree computation.


  Commit: 21761d3d7140bc6936b504b018ae4b16e4c1d146
      https://github.com/MLton/mlton/commit/21761d3d7140bc6936b504b018ae4b16e4c1d146
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-14 (Mon, 14 Oct 2019)

  Changed paths:
    M mlton/backend/rssa-tree.fun

  Log Message:
  -----------
  Destroy `Property` for labels in `RssaTree.Function.{dominatorTree,loopForest}`


  Commit: 86dd7d40d1e677dc562c968d3943ce613bc0911d
      https://github.com/MLton/mlton/commit/86dd7d40d1e677dc562c968d3943ce613bc0911d
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-14 (Mon, 14 Oct 2019)

  Changed paths:
    M runtime/gc/call-stack.c
    M runtime/gc/call-stack.h
    M runtime/gc/foreach.c
    M runtime/gc/foreach.h
    M runtime/gc/profiling.c
    M runtime/gc/profiling.h

  Log Message:
  -----------
  Extend `foreachStackFrame` to pass `frameInfo` and `frameTop`


  Commit: 8b8ac88ffe6626a36847733ab2a5c211f6a680d8
      https://github.com/MLton/mlton/commit/8b8ac88ffe6626a36847733ab2a5c211f6a680d8
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-14 (Mon, 14 Oct 2019)

  Changed paths:
    M runtime/gc/dfs-mark.c
    M runtime/gc/dfs-mark.h
    M runtime/gc/gc_state.h
    M runtime/gc/mark-compact.c
    M runtime/gc/share.c
    M runtime/gc/size.c

  Log Message:
  -----------
  Refactor `dfsMark` to take a `GC_markState` parameter

Along with the refactoring of `foreachObjptr` to use closures, this
eliminates the need for a global `struct GC_markState markState` to
communicate parameters to `dfsMark`.

  This avoid the need for special-purpose functions that
call `dfsMarkByMode` with particular arguments.


  Commit: 0ff4011b28b409edd69d7da9b3ed532e3467f106
      https://github.com/MLton/mlton/commit/0ff4011b28b409edd69d7da9b3ed532e3467f106
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-15 (Tue, 15 Oct 2019)

  Changed paths:
    M runtime/gc/call-stack.c
    M runtime/gc/call-stack.h

  Log Message:
  -----------
  Simplify `GC_numStackFrames`


  Commit: 2c8873063a43667c05f039c928a7309e0976481f
      https://github.com/MLton/mlton/commit/2c8873063a43667c05f039c928a7309e0976481f
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-15 (Tue, 15 Oct 2019)

  Changed paths:
    M runtime/gc/call-stack.c
    M runtime/gc/call-stack.h

  Log Message:
  -----------
  Tweak `struct GC_callStackState` for `GC_callStack`


  Commit: 85148aaa64cac207c12459faedbb7ad456060a3d
      https://github.com/MLton/mlton/commit/85148aaa64cac207c12459faedbb7ad456060a3d
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-15 (Tue, 15 Oct 2019)

  Changed paths:
    M lib/mlton/basic/hash-set.sig
    M lib/mlton/basic/hash-set.sml
    M mlton/atoms/hash-type.fun
    M mlton/atoms/hash-type.sig
    M mlton/backend/ssa2-to-rssa.fun
    M mlton/closure-convert/closure-convert.fun
    M mlton/ssa/ssa-to-ssa2.fun
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree.sig
    M mlton/ssa/ssa-tree2.fun
    M mlton/ssa/ssa-tree2.sig

  Log Message:
  -----------
  Reset table for hash-consing of {{,S}XML,SSA{,2}} types

See MLton/mlton#334

After converting from one IR to the next, all global data associated
with the previous IR should be dead.  However, it is observed that the
tables used for hash-consing of types seem to be retained after
converting from the corresponding IR.  It is unclear whether this is a
space-safety bug in the compiler or whether the code structure of the
compiler happens to keep those tables live in closures that are
reachable (but unused).

A draft version of this commit used

    val table: t HashSet.t option ref = ref (SOME (HashSet.new {hash = hash}))

    fun lookup (hash, tr) = HashSet.lookup (valOf (!table), hash, ..., ...)

    fun resetTable () = table := NONE

which would have an `Option` exception if the table were actually used
after it was reset; no such exception was observed in a self-compile.


  Commit: ee85ae382bba3fa0fb289531bfec55e5346529b1
      https://github.com/MLton/mlton/commit/ee85ae382bba3fa0fb289531bfec55e5346529b1
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-15 (Tue, 15 Oct 2019)

  Changed paths:
    M mlton/ssa/redundant.fun

  Log Message:
  -----------
  Reset work-list reference in `Redundant` pass

See MLton/mlton#334

Although the `Redundant` pass does not significantly change the SSA
program size or SSA types hash table size, there was an increase in
live data size, due to the `val todo : Refinement.t list ref` used to
initialize the work-list.

         redundantTests starting
            redundantTests.post stats
               ssa program size = 161,653,032 bytes
               num globals = 19730
               num vars in main = 16498
               num blocks in main = 8931
               num functions in program = 2224
               num blocks in program = 274907
               num statements in program = 315083
               num types in program = 8143
               num types in hash table = 166174
               types hash table size = 60,607,896 bytes
               property list numPeeks = 485191925
               property list maxLength = 4
               property list average position = 0.143
               hash set numPeeks = 16776220
               hash set average position = 7.383
               live data = 222,993,504 bytes
         redundantTests finished in 2.88 + 0.00 (0% GC)
         redundant starting
            redundant.post stats
               ssa program size = 161,637,832 bytes
               num globals = 19730
               num vars in main = 16498
               num blocks in main = 8931
               num functions in program = 2224
               num blocks in program = 274907
               num statements in program = 315083
               num types in program = 8143
               num types in hash table = 166174
               types hash table size = 60,607,896 bytes
               property list numPeeks = 489730576
               property list maxLength = 4
               property list average position = 0.144
               hash set numPeeks = 16776220
               hash set average position = 7.383
               live data = 241,562,088 bytes
         redundant finished in 3.14 + 0.00 (0% GC)

This would be a correctness bug if the `Redundant` pass were executed
multiple times, because the `todo` list would grow with each
execution.


  Commit: 2b7a560ffdd20ec4db23360b5543df92269ea37d
      https://github.com/MLton/mlton/commit/2b7a560ffdd20ec4db23360b5543df92269ea37d
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-10-16 (Wed, 16 Oct 2019)

  Changed paths:
    M mlton/backend/packed-representation.fun
    M mlton/backend/representation.sig
    M mlton/backend/ssa2-to-rssa.fun

  Log Message:
  -----------
  Clear/Destroy properties used by `PackedRepresentation`

See MLton/mlton#334

Prior to this commit, a self-compile exhibits:
      toRssa starting
         toRssa.post stats
            rssa program size = 386,962,520 bytes
            num functions in program = 2226
            num blocks in program = 612244
            num statements in program = 968472
            num object types in program = 14906
            property list numPeeks = 634609194
            property list maxLength = 4
            property list average position = 0.146
            hash set numPeeks = 22115585
            hash set average position = 6.302
            live data = 408,692,624 bytes
      toRssa finished in 2.36 + 0.31 (12% GC)
      rssaSimplify starting
         rssaShrink1 starting
            rssaShrink1.post stats
               rssa program size = 243,869,480 bytes
               num functions in program = 2226
               num blocks in program = 315219
               num statements in program = 691949
               num object types in program = 14906
               property list numPeeks = 642833459
               property list maxLength = 4
               property list average position = 0.148
               hash set numPeeks = 22115585
               hash set average position = 6.302
               live data = 265,777,584 bytes
         rssaShrink1 finished in 2.20 + 0.00 (0% GC)
         ...
         rssaSimplify.post stats
            rssa program size = 331,162,064 bytes
            num functions in program = 2226
            num blocks in program = 436046
            num statements in program = 833391
            num object types in program = 14906
            property list numPeeks = 706614833
            property list maxLength = 4
            property list average position = 0.165
            hash set numPeeks = 22562271
            hash set average position = 6.197
            live data = 353,484,800 bytes
      rssaSimplify finished in 17.73 + 0.90 (5% GC)
      backend starting
         backend.post stats
            machine program size = 753,229,520 bytes
            num chunks in program = 2226
            num blocks in program = 438272
            num statements in program = 1487072
            num object types in program = 14906
            property list numPeeks = 759893641
            property list maxLength = 4
            property list average position = 0.172
            hash set numPeeks = 22686397
            hash set average position = 6.167
            live data = 774,617,720 bytes
      backend finished in 10.92 + 1.76 (14% GC)
      machineSimplify starting
         machineShuffle skipped
         machineSimplify.post stats
            machine program size = 753,229,520 bytes
            num chunks in program = 2226
            num blocks in program = 438272
            num statements in program = 1487072
            num object types in program = 14906
            property list numPeeks = 759893641
            property list maxLength = 4
            property list average position = 0.172
            hash set numPeeks = 22686397
            hash set average position = 6.167
            live data = 774,616,888 bytes
      machineSimplify finished in 2.67 + 0.00 (0% GC)

where the live data at `toRssa.post` is approximately 22Mb larger than
the rssa program size, which persists through the rest of the
compilation.

Now, a self-compile exhibits:

      toRssa starting
         toRssa.post stats
            rssa program size = 386,995,416 bytes
            num functions in program = 2226
            num blocks in program = 612276
            num statements in program = 968563
            num object types in program = 14909
            property list numPeeks = 634648330
            property list maxLength = 4
            property list average position = 0.146
            hash set numPeeks = 22117807
            hash set average position = 6.249
            live data = 388,136,000 bytes
      toRssa finished in 2.35 + 0.32 (12% GC)
      rssaSimplify starting
         rssaShrink1 starting
            rssaShrink1.post stats
               rssa program size = 243,897,056 bytes
               num functions in program = 2226
               num blocks in program = 315234
               num statements in program = 692020
               num object types in program = 14909
               property list numPeeks = 642873098
               property list maxLength = 4
               property list average position = 0.148
               hash set numPeeks = 22117807
               hash set average position = 6.249
               live data = 245,037,584 bytes
         rssaShrink1 finished in 2.18 + 0.00 (0% GC)
         ...
         rssaSimplify.post stats
            rssa program size = 331,193,616 bytes
            num functions in program = 2226
            num blocks in program = 436067
            num statements in program = 833466
            num object types in program = 14909
            property list numPeeks = 706661702
            property list maxLength = 4
            property list average position = 0.165
            hash set numPeeks = 22564514
            hash set average position = 6.145
            live data = 332,750,056 bytes
      rssaSimplify finished in 17.36 + 0.84 (5% GC)
      backend starting
         backend.post stats
            machine program size = 753,410,904 bytes
            num chunks in program = 2226
            num blocks in program = 438293
            num statements in program = 1487168
            num object types in program = 14909
            property list numPeeks = 759953737
            property list maxLength = 4
            property list average position = 0.172
            hash set numPeeks = 22688644
            hash set average position = 6.116
            live data = 754,030,232 bytes
      backend finished in 10.16 + 1.25 (11% GC)
      machineSimplify starting
         machineShuffle skipped
         machineSimplify.post stats
            machine program size = 753,410,904 bytes
            num chunks in program = 2226
            num blocks in program = 438293
            num statements in program = 1487168
            num object types in program = 14909
            property list numPeeks = 759953737
            property list maxLength = 4
            property list average position = 0.172
            hash set numPeeks = 22688644
            hash set average position = 6.116
            live data = 754,029,360 bytes
      machineSimplify finished in 2.66 + 0.00 (0% GC)

where the live data at `toRssa.post` is only slightly larger than the
rssa program size and the live data at `machineSimplify.post` is only
slightly larger than the machine program size.

It is possible that this is a space-safety bug in the compiler.  Note
that after the conversion to RSSA, there are no references to
`Ssa2.Tycon.t`, `Ssa2.Con.t`, or `Ssa2.Type.t` in the RSSA IL program.
Hence, it shouldn't be necessary to clear these property lists -- the
property lists should be unreachable when the SSA2 IL program is
unreachable.  Moreover, the extraneous live data remains if any one of
the `Tycon.clear`, `Con.clear`, or `destroyTypeRep` is omitted.


  Commit: b9d31150f3d5969e172ad813790dc85ba7eb9798
      https://github.com/MLton/mlton/commit/b9d31150f3d5969e172ad813790dc85ba7eb9798
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-10-25 (Fri, 25 Oct 2019)

  Changed paths:
    M Makefile
    M Makefile.config
    M basis-library/mlton/mlton.sig
    M basis-library/mlton/mlton.sml
    M basis-library/primitive/prim-mlton.sml
    M doc/examples/size/size.sml
    M doc/guide/src/MLtonStructure.adoc
    M lib/mlton/basic/hash-set.sig
    M lib/mlton/basic/hash-set.sml
    M lib/stubs/mlton-stubs-for-polyml/mlton.sml
    M lib/stubs/mlton-stubs-for-smlnj/mlton.sml
    M lib/stubs/mlton-stubs/mlton.sig
    M lib/stubs/mlton-stubs/mlton.sml
    M mlton/Makefile
    M mlton/atoms/cases.fun
    M mlton/atoms/cases.sig
    M mlton/atoms/con-.fun
    M mlton/atoms/hash-type.fun
    M mlton/atoms/hash-type.sig
    M mlton/atoms/tycon.fun
    M mlton/backend/bounce-vars.fun
    M mlton/backend/packed-representation.fun
    M mlton/backend/representation.sig
    M mlton/backend/rssa-live.fun
    M mlton/backend/rssa-live.sig
    M mlton/backend/rssa-restore.fun
    M mlton/backend/rssa-restore.sig
    A mlton/backend/rssa-shrink.fun
    A mlton/backend/rssa-shrink.sig
    M mlton/backend/rssa-simplify.fun
    M mlton/backend/rssa-tree.fun
    M mlton/backend/rssa-tree.sig
    A mlton/backend/rssa-type-check.fun
    A mlton/backend/rssa-type-check.sig
    M mlton/backend/rssa.fun
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb
    M mlton/backend/ssa2-to-rssa.fun
    M mlton/closure-convert/closure-convert.fun
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/control/control.sml
    M mlton/core-ml/core-ml.fun
    M mlton/core-ml/core-ml.sig
    M mlton/elaborate/elaborate-env.fun
    M mlton/main/compile.fun
    M mlton/main/main.fun
    M mlton/ssa/profile.fun
    M mlton/ssa/profile2.fun
    M mlton/ssa/redundant.fun
    M mlton/ssa/restore.fun
    M mlton/ssa/restore2.fun
    M mlton/ssa/shrink.fun
    M mlton/ssa/shrink2.fun
    M mlton/ssa/simplify2.fun
    M mlton/ssa/ssa-to-ssa2.fun
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree.sig
    M mlton/ssa/ssa-tree2.fun
    M mlton/ssa/ssa-tree2.sig
    M mlton/xml/polyvariance.fun
    M mlton/xml/shrink.fun
    M mlton/xml/xml-tree.fun
    M mlton/xml/xml-tree.sig
    M regression/mlton.share.sml
    M regression/size.sml
    M regression/thread-switch-size.sml
    M runtime/gc/call-stack.c
    M runtime/gc/call-stack.h
    M runtime/gc/cheney-copy.c
    M runtime/gc/dfs-mark.c
    M runtime/gc/dfs-mark.h
    M runtime/gc/foreach.c
    M runtime/gc/foreach.h
    M runtime/gc/forward.c
    M runtime/gc/forward.h
    M runtime/gc/gc_state.h
    M runtime/gc/init.c
    M runtime/gc/invariant.c
    M runtime/gc/invariant.h
    M runtime/gc/mark-compact.c
    M runtime/gc/mark-compact.h
    M runtime/gc/profiling.c
    M runtime/gc/profiling.h
    M runtime/gc/share.c
    M runtime/gc/size.c
    M runtime/gc/size.h
    M runtime/gc/translate.c
    M runtime/gc/translate.h

  Log Message:
  -----------
  Merge pull request #335 from MatthewFluet/mlton-space-leak

Fix excessive live data during self-compile

Closes MLton/mlton#334.

It was observed that self-compiles have recently had significantly
larger `max bytes live` on the second round of compilation (using the
just built compiler) than on the first round (using an "old" `mlton`).
Further investigation revealed that the size of live data during a
self-compile typically exceeded the size of the IR program.  This PR
"fixes" those space leaks, although it is not clear whether or not any
of them corresponds to space-safety bugs in the compiler proper.

Highlights:
 * fd0d28fd8: Change `MLton.size`'s type to `'a -> IntInf.int`

 * 541989f0b: Add `MLton.sizeAll: unit -> IntInf.int`

 * b83e6df0e: Report `live data = ??? bytes` at `-verbose 3`

 * 41e2a29cd, a5e349db7, f585511f4, ddfbf6152: Better "cleanup" of
   handlers introduced by profiling; not directly related to the space
   issues, but observed during investigation.

 * 01b87480a, d39e63e8a: Disable `Zone` SSA optimization pass.

   When self-compiling with `Zone` enabled, the resulting compiler
   (when self-compiling) has over 2GB live data at the end of
   `amd64Codegen`. However, the should be very little live data at the
   end of `amd64Codegen`, because the IR program is no longer live.
   The `Zone` pass is known to not be safe-for-space.

   The `Zone` pass only transforms SSA2 functions with over 10000
   blocks. MLton's `main` SSA2 function only recently crossed the
   threshold that results in the `Zone` pass transforming the `main`
   SSA2 function, which is why this space leak only recently became a
   problem.

 * 6009c5e57, 4fd9d2856, 3da3bcdfa, 6bac20e9a: Perform per-function
   shrinking in `BounceVars`

 * c9c85e6eb: Destroy `Property` for variables in `RssaLive`; this
   addresses an issue where the during `bounceVars`, the `property
   list maxLength` jumped from 4 to 761 during `bounceVars` on a
   self-compile.

 * 85148aaa6: Reset table for hash-consing of {{,S}XML,SSA{,2}} types

   After converting from one IR to the next, all global data
   associated with the previous IR should be dead.  However, it is
   observed that the tables used for hash-consing of types seem to be
   retained after converting from the corresponding IR.  It is unclear
   whether this is a space-safety bug in the compiler or whether the
   code structure of the compiler happens to keep those tables live in
   closures that are reachable (but unused).

 * ee85ae382: Reset work-list reference in `Redundant` pass

 * 2b7a560ff: Clear/Destroy properties used by `PackedRepresentation`

   It is possible that this is a space-safety bug in the compiler.
   Note that after the conversion to RSSA, there are no references to
   `Ssa2.Tycon.t`, `Ssa2.Con.t`, or `Ssa2.Type.t` in the RSSA IL
   program. Hence, it shouldn't be necessary to clear these property
   lists -- the property lists should be unreachable when the SSA2 IL
   program is unreachable.  Moreover, the extraneous live data remains
   if any one of the `Tycon.clear`, `Con.clear`, or `destroyTypeRep`
   is omitted.

As noted above, 85148aaa6 and 2b7a560ff explicitly make data
unreachable in order to reduce the live data.  However, in both of
these cases, it seems that the data being made unreachable should not
actually be reachable --- it is data corresponding to the previous IR
that should no longer be live.

Here are detailed logs (reporting `live data = ??? bytes` at `-verbose
3` for a self-compile, comparing the space behavior before and after
the fixes.  Note that `max bytes live` goes from `3,059,306,552 bytes`
to `998,351,352 bytes` with a corresponding decrease in `max heap
size`.

## Before

``` text
MLton 20190924.180253-g967845479 starting
   control flags:
      align: 8
      atMLtons: (@MLton, --)
      bounceRssaLimit: Some 8
      bounceRssaLiveCutoff: Some 12
      bounceRssaLoopCutoff: Some 40
      bounceRssaUsageCutoff: Some 15
      chunkBatch: 32768
      chunkify: per function
      chunkTailCall: true
      closureConvertGlobalize: true
      closureConvertShrink: true
      codegen: amd64
      contifyIntoMain: false
      debug: false
      defaultChar: char8
      defaultWideChar: widechar32
      defaultInt: int32
      defaultReal: real64
      defaultWord: word32
      diag passes: []
      execute passes: []
      elaborate allowConstant (default): false
      elaborate allowConstant (enabled): true
      elaborate allowFFI (default): false
      elaborate allowFFI (enabled): true
      elaborate allowPrim (default): false
      elaborate allowPrim (enabled): true
      elaborate allowOverload (default): false
      elaborate allowOverload (enabled): true
      elaborate allowRedefineSpecialIds (default): false
      elaborate allowRedefineSpecialIds (enabled): true
      elaborate allowSpecifySpecialIds (default): false
      elaborate allowSpecifySpecialIds (enabled): true
      elaborate deadCode (default): false
      elaborate deadCode (enabled): true
      elaborate forceUsed (default): false
      elaborate forceUsed (enabled): true
      elaborate ffiStr (default): 
      elaborate ffiStr (enabled): true
      elaborate nonexhaustiveBind (default): warn
      elaborate nonexhaustiveBind (enabled): true
      elaborate nonexhaustiveExnBind (default): default
      elaborate nonexhaustiveExnBind (enabled): true
      elaborate redundantBind (default): warn
      elaborate redundantBind (enabled): true
      elaborate nonexhaustiveMatch (default): warn
      elaborate nonexhaustiveMatch (enabled): true
      elaborate nonexhaustiveExnMatch (default): default
      elaborate nonexhaustiveExnMatch (enabled): true
      elaborate redundantMatch (default): warn
      elaborate redundantMatch (enabled): true
      elaborate nonexhaustiveRaise (default): ignore
      elaborate nonexhaustiveRaise (enabled): true
      elaborate nonexhaustiveExnRaise (default): ignore
      elaborate nonexhaustiveExnRaise (enabled): true
      elaborate redundantRaise (default): warn
      elaborate redundantRaise (enabled): true
      elaborate resolveScope (default): strdec
      elaborate resolveScope (enabled): true
      elaborate sequenceNonUnit (default): ignore
      elaborate sequenceNonUnit (enabled): true
      elaborate valrecConstr (default): warn
      elaborate valrecConstr (enabled): true
      elaborate warnUnused (default): false
      elaborate warnUnused (enabled): true
      elaborate allowDoDecls (default): false
      elaborate allowDoDecls (enabled): true
      elaborate allowExtendedNumConsts (default): false
      elaborate allowExtendedNumConsts (enabled): true
      elaborate allowExtendedTextConsts (default): false
      elaborate allowExtendedTextConsts (enabled): true
      elaborate allowLineComments (default): false
      elaborate allowLineComments (enabled): true
      elaborate allowOptBar (default): false
      elaborate allowOptBar (enabled): true
      elaborate allowOptSemicolon (default): false
      elaborate allowOptSemicolon (enabled): true
      elaborate allowOrPats (default): false
      elaborate allowOrPats (enabled): true
      elaborate allowRecordPunExps (default): false
      elaborate allowRecordPunExps (enabled): true
      elaborate allowSigWithtype (default): false
      elaborate allowSigWithtype (enabled): true
      elaborate allowVectorExps (default): false
      elaborate allowVectorExps (enabled): true
      elaborate allowVectorPats (default): false
      elaborate allowVectorPats (enabled): true
      emit main: true
      export header: None
      exn history: false
      generated output format: executable
      gc check: Limit
      globalize arrays: false
      globalize refs: true
      globalize int-inf as small type): true
      globalize small type: 1
      indentation: 3
      inlineIntoMain: true
      inlineLeafA: {loops = true, repeat = true, size = Some 20}
      inlineLeafB: {loops = true, repeat = true, size = Some 40}
      inlineNonRec: {small = 60, product = 320}
      input file: mlton
      keep AST: false
      keep CoreML: false
      keep def use: true
      keep dot: false
      keep Machine: false
      keep passes: []
      keep RSSA: false
      keep SSA: false
      keep SSA2: false
      keep SXML: false
      keep XML: false
      extra_: false
      lib dir: /home/mtf/devel/mlton/builds/gc29256f9c/lib/mlton
      lib target dir: /home/mtf/devel/mlton/builds/gc29256f9c/lib/mlton/targets/self
      llvmTBAA: none
      loop unrolling limit: 150
      loop unswitching limit: 300
      mark cards: true
      max function size: 10000
      mlb path vars: [{var = SML_LIB, path = $(LIB_MLTON_DIR)/sml}]
      native commented: 0
      elim AL redundant: true
      native live stack: false
      native optimize: 1
      native move hoist: true
      native copy prop: true
      native copy prop cutoff: 1000
      native cutoff: 100
      native live transfer: 8
      native shuffle: true
      native ieee fp: false
      native split: Some 20000
      optFuel: None
      optimizationPasses: [<ssa2::default>, <ssa::default>, <sxml::default>, <xml::default>]
      polyvariance: Some {hofo = true, rounds = 2, small = 30, product = 300}
      prefer abs paths: false
      prof passes: []
      profile: None
      profile branch: false
      profile C: []
      profile IL: ProfileSource
      profile include/exclude: [(Seq [Star [.], Or [Seq [Seq [[$], [(], [S], [M], [L], [_], [L], [I], [B], [)]]]], Star [.]], false)]
      profile raise: false
      profile stack: false
      profile val: false
      show basis: None
      show basis compact: false
      show basis def: true
      show basis flat: true
      show def-use: None
      show types: true
      staticAllocInternalPtrs: Static
      staticInitArrays: true
      staticAllocArrays: true
      staticInitObjects: Some false
      staticAllocObjects: true
      staticAllocWordVectorConsts: true
      bool type splitting method: smart
      stop passes: []
      target: self
      target arch: AMD64
      target OS: Linux
      type check: false
      verbosity: Detail
      warn unrecognized annotation: true
      warn deprecated features: true
      zone cut depth: 100
   Compile SML starting
      frontend starting
         parseAndElaborate starting
            processDefUse starting
            processDefUse finished in 0.45 + 0.00 (0% GC)
            parseAndElaborate.post stats
               coreML program size = 519,142,624 bytes
               property list numPeeks = 78481004
               property list maxLength = 3
               property list average position = 0.256
               hash set numPeeks = 511431
               hash set average position = 1.033
               live data = 527,419,640 bytes
         parseAndElaborate finished in 19.65 + 6.14 (24% GC)
         deadCode starting
            deadCode.post stats
               coreML program size = 479,246,704 bytes
               property list numPeeks = 78862914
               property list maxLength = 3
               property list average position = 0.256
               hash set numPeeks = 511431
               hash set average position = 1.033
               live data = 488,109,056 bytes
         deadCode finished in 3.38 + 0.00 (0% GC)
         defunctorize starting
            defunctorize.post stats
               xml program size = 254,316,832 bytes
               num primexps in program = 476517
               num types in program = 685834
               num types in hash table = 700513
               types hash table size = 142,166,456 bytes
               property list numPeeks = 85840813
               property list maxLength = 4
               property list average position = 0.276
               hash set numPeeks = 1408027
               hash set average position = 0.603
               live data = 328,824,528 bytes
         defunctorize finished in 4.56 + 0.00 (0% GC)
         frontend.post stats
            xml program size = 254,316,832 bytes
            num primexps in program = 476517
            num types in program = 685834
            num types in hash table = 700513
            types hash table size = 142,166,456 bytes
            property list numPeeks = 87454737
            property list maxLength = 4
            property list average position = 0.271
            hash set numPeeks = 1408027
            hash set average position = 0.603
            live data = 328,824,528 bytes
      frontend finished in 30.25 + 6.14 (17% GC)
      xmlSimplify starting
         xmlTypeCheck starting
         xmlTypeCheck finished in 0.96 + 1.10 (54% GC)
         xmlShrink starting
            xmlShrink.post stats
               xml program size = 192,995,408 bytes
               num primexps in program = 271827
               num types in program = 671817
               num types in hash table = 703601
               types hash table size = 132,697,384 bytes
               property list numPeeks = 101885130
               property list maxLength = 4
               property list average position = 0.235
               hash set numPeeks = 2444526
               hash set average position = 0.802
               live data = 295,262,472 bytes
         xmlShrink finished in 3.29 + 0.02 (0% GC)
         xmlSimplifyTypes starting
            xmlSimplifyTypes.post stats
               xml program size = 275,049,312 bytes
               num primexps in program = 271827
               num types in program = 671779
               num types in hash table = 703620
               types hash table size = 198,215,416 bytes
               property list numPeeks = 106509415
               property list maxLength = 4
               property list average position = 0.237
               hash set numPeeks = 3116322
               hash set average position = 0.862
               live data = 377,330,416 bytes
         xmlSimplifyTypes finished in 4.06 + 0.00 (0% GC)
         xmlTypeCheck starting
         xmlTypeCheck finished in 1.00 + 0.00 (0% GC)
         xmlSimplify.post stats
            xml program size = 249,701,320 bytes
            num primexps in program = 271827
            num types in program = 671779
            num types in hash table = 703631
            types hash table size = 186,448,664 bytes
            property list numPeeks = 113600658
            property list maxLength = 4
            property list average position = 0.260
            hash set numPeeks = 4080737
            hash set average position = 0.913
            live data = 351,983,928 bytes
      xmlSimplify finished in 12.52 + 1.12 (8% GC)
      monomorphise starting
         monomorphise.post stats
            sxml program size = 214,148,096 bytes
            num primexps in program = 801910
            num types in program = 100833
            num types in hash table = 803270
            types hash table size = 200,715,848 bytes
            property list numPeeks = 125694968
            property list maxLength = 4
            property list average position = 0.264
            hash set numPeeks = 7266759
            hash set average position = 0.933
            live data = 415,856,256 bytes
      monomorphise finished in 3.99 + 0.72 (15% GC)
      sxmlSimplify starting
         sxmlTypeCheck starting
         sxmlTypeCheck finished in 0.64 + 0.00 (0% GC)
         sxmlShrink1 starting
            sxmlShrink1.post stats
               sxml program size = 142,749,176 bytes
               num primexps in program = 553515
               num types in program = 40094
               num types in hash table = 809212
               types hash table size = 201,523,960 bytes
               property list numPeeks = 142336741
               property list maxLength = 4
               property list average position = 0.240
               hash set numPeeks = 7553198
               hash set average position = 0.936
               live data = 366,601,664 bytes
         sxmlShrink1 finished in 3.82 + 0.00 (0% GC)
         implementSuffix starting
            implementSuffix.post stats
               sxml program size = 142,751,760 bytes
               num primexps in program = 553522
               num types in program = 40094
               num types in hash table = 809212
               types hash table size = 201,523,960 bytes
               property list numPeeks = 143068056
               property list maxLength = 4
               property list average position = 0.239
               hash set numPeeks = 7553203
               hash set average position = 0.936
               live data = 366,604,248 bytes
         implementSuffix finished in 2.72 + 0.00 (0% GC)
         sxmlShrink2 starting
            sxmlShrink2.post stats
               sxml program size = 139,296,624 bytes
               num primexps in program = 539297
               num types in program = 38492
               num types in hash table = 809212
               types hash table size = 201,523,960 bytes
               property list numPeeks = 150790231
               property list maxLength = 4
               property list average position = 0.228
               hash set numPeeks = 7553203
               hash set average position = 0.936
               live data = 363,327,848 bytes
         sxmlShrink2 finished in 3.56 + 0.00 (0% GC)
         implementExceptions starting
            implementExceptions.post stats
               sxml program size = 145,614,320 bytes
               num primexps in program = 567836
               num types in program = 39074
               num types in hash table = 809780
               types hash table size = 201,601,200 bytes
               property list numPeeks = 151659372
               property list maxLength = 4
               property list average position = 0.226
               hash set numPeeks = 7561943
               hash set average position = 0.936
               live data = 369,657,656 bytes
         implementExceptions finished in 2.86 + 0.00 (0% GC)
         sxmlShrink3 starting
            sxmlShrink3.post stats
               sxml program size = 143,516,192 bytes
               num primexps in program = 557350
               num types in program = 39055
               num types in hash table = 809780
               types hash table size = 201,601,200 bytes
               property list numPeeks = 159592801
               property list maxLength = 4
               property list average position = 0.215
               hash set numPeeks = 7561943
               hash set average position = 0.936
               live data = 361,376,872 bytes
         sxmlShrink3 finished in 3.68 + 0.67 (15% GC)
         polyvariance starting
            duplicate1 starting
               duplicate1.post stats
                  sxml program size = 161,106,840 bytes
                  num primexps in program = 641544
                  num types in program = 32076
                  num types in hash table = 809780
                  types hash table size = 201,601,040 bytes
                  property list numPeeks = 176797895
                  property list maxLength = 4
                  property list average position = 0.196
                  hash set numPeeks = 7561943
                  hash set average position = 0.936
                  live data = 379,815,024 bytes
            duplicate1 finished in 4.08 + 0.00 (0% GC)
            duplicate2 starting
               duplicate2.post stats
                  sxml program size = 161,002,288 bytes
                  num primexps in program = 641073
                  num types in program = 32000
                  num types in hash table = 809780
                  types hash table size = 201,601,040 bytes
                  property list numPeeks = 188874665
                  property list maxLength = 4
                  property list average position = 0.184
                  hash set numPeeks = 7561943
                  hash set average position = 0.936
                  live data = 379,720,240 bytes
            duplicate2 finished in 3.71 + 0.00 (0% GC)
            polyvariance.post stats
               sxml program size = 161,002,288 bytes
               num primexps in program = 641073
               num types in program = 32000
               num types in hash table = 809780
               types hash table size = 201,601,040 bytes
               property list numPeeks = 189683382
               property list maxLength = 4
               property list average position = 0.183
               hash set numPeeks = 7561943
               hash set average position = 0.936
               live data = 379,720,200 bytes
         polyvariance finished in 10.31 + 0.00 (0% GC)
         sxmlShrink4 starting
            sxmlShrink4.post stats
               sxml program size = 161,002,288 bytes
               num primexps in program = 641073
               num types in program = 32000
               num types in hash table = 809780
               types hash table size = 201,601,040 bytes
               property list numPeeks = 198671271
               property list maxLength = 4
               property list average position = 0.175
               hash set numPeeks = 7561943
               hash set average position = 0.936
               live data = 379,965,960 bytes
         sxmlShrink4 finished in 3.69 + 0.64 (15% GC)
         sxmlTypeCheck starting
         sxmlTypeCheck finished in 0.49 + 0.00 (0% GC)
         sxmlSimplify.post stats
            sxml program size = 161,002,288 bytes
            num primexps in program = 641073
            num types in program = 32000
            num types in hash table = 810061
            types hash table size = 201,639,256 bytes
            property list numPeeks = 203146260
            property list maxLength = 4
            property list average position = 0.174
            hash set numPeeks = 7801466
            hash set average position = 0.938
            live data = 380,004,176 bytes
      sxmlSimplify finished in 34.38 + 1.31 (4% GC)
      closureConvert starting
         flow analysis starting
         flow analysis finished in 0.86 + 0.00 (0% GC)
         free variables starting
         free variables finished in 0.26 + 0.00 (0% GC)
         globalize starting
         globalize finished in 0.15 + 0.00 (0% GC)
         convert starting
         convert finished in 2.06 + 2.12 (51% GC)
         closureConvert.post stats
            ssa program size = 301,602,112 bytes
            num globals = 157190
            num vars in main = 18077
            num blocks in main = 7845
            num functions in program = 37899
            num blocks in program = 510249
            num statements in program = 535295
            num types in program = 39058
            num types in hash table = 76397
            types hash table size = 17,019,128 bytes
            property list numPeeks = 225484795
            property list maxLength = 4
            property list average position = 0.159
            hash set numPeeks = 8003794
            hash set average position = 0.932
            live data = 855,724,864 bytes
      closureConvert finished in 6.91 + 2.12 (24% GC)
      ssaSimplify starting
         ssaTypeCheck starting
            checkScopes starting
            checkScopes finished in 0.77 + 0.00 (0% GC)
         ssaTypeCheck finished in 1.35 + 0.00 (0% GC)
         removeUnused1 starting
            removeUnused1.post stats
               ssa program size = 229,797,016 bytes
               num globals = 114691
               num vars in main = 14818
               num blocks in main = 5242
               num functions in program = 35922
               num blocks in program = 377139
               num statements in program = 468174
               num types in program = 35698
               num types in hash table = 77893
               types hash table size = 29,837,224 bytes
               prop...
 
[truncated message content]

[MLton-commit] [MLton/mlton] 2343d9: Use `osx_image: xcode11` for Travis CI

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: 2343d9acbdcb12d99d4ae1e1f2d16afd381944d2
      https://github.com/MLton/mlton/commit/2343d9acbdcb12d99d4ae1e1f2d16afd381944d2
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-19 (Thu, 19 Sep 2019)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Use `osx_image: xcode11` for Travis CI

Older `osx_image`s have an outdated Homebrew.


  Commit: cf172cae355af4e1beb2b820605c9ab9683c0c46
      https://github.com/MLton/mlton/commit/cf172cae355af4e1beb2b820605c9ab9683c0c46
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-19 (Thu, 19 Sep 2019)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Use Ubuntu Bionic (18.04) for Travis CI


  Commit: 800a91a25e2811410c98f59f217559c67cd18ef5
      https://github.com/MLton/mlton/commit/800a91a25e2811410c98f59f217559c67cd18ef5
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-19 (Thu, 19 Sep 2019)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Move `dist: bionic` and `osx_image: xcode11` entries


  Commit: 530e010a18925129584968950e058a202846b054
      https://github.com/MLton/mlton/commit/530e010a18925129584968950e058a202846b054
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-19 (Thu, 19 Sep 2019)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Use `language: minimal` for Travis CI


  Commit: e97e380a63064a296f120dc67ddf24c2b47a47c9
      https://github.com/MLton/mlton/commit/e97e380a63064a296f120dc67ddf24c2b47a47c9
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-20 (Fri, 20 Sep 2019)

  Changed paths:
    M mlton/Makefile

  Log Message:
  -----------
  Give `*_XARGS` precedence over `_ARGS` in `mlton/Makefile`


  Commit: db6e11b26902b1aa0cd53addecbd3fb74f1492b5
      https://github.com/MLton/mlton/commit/db6e11b26902b1aa0cd53addecbd3fb74f1492b5
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-20 (Fri, 20 Sep 2019)

  Changed paths:
    M bin/travis-ci

  Log Message:
  -----------
  Use more RAM for self-compiles for Travis CI


  Commit: 2a5a5fde5b792239c5bd49cc21159d02c5643ac9
      https://github.com/MLton/mlton/commit/2a5a5fde5b792239c5bd49cc21159d02c5643ac9
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-09-20 (Fri, 20 Sep 2019)

  Changed paths:
    M .travis.yml
    M bin/travis-ci
    M mlton/Makefile

  Log Message:
  -----------
  Merge pull request #333 from MatthewFluet/travis-ci-updates

Travis CI updates


Compare: https://github.com/MLton/mlton/compare/57c9c94d419d...2a5a5fde5b79

[MLton-commit] [MLton/mlton] 61de3a: Add Static structure

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: 61de3a4faf3f04f059ff54324cbb606891a68788
      https://github.com/MLton/mlton/commit/61de3a4faf3f04f059ff54324cbb606891a68788
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-03 (Wed, 03 Jul 2019)

  Changed paths:
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/backend/sources.mlb
    A mlton/backend/static.fun
    A mlton/backend/static.sig

  Log Message:
  -----------
  Add Static structure


  Commit: e4017ec4758108c3518e5f8c87a243b8f82c5fd3
      https://github.com/MLton/mlton/commit/e4017ec4758108c3518e5f8c87a243b8f82c5fd3
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-03 (Wed, 03 Jul 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/backend/rssa-tree.sig
    M mlton/backend/sources.cm
    M mlton/backend/ssa2-to-rssa.fun
    M mlton/codegen/amd64-codegen/amd64-codegen.fun
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/codegen/x86-codegen/x86-codegen.fun

  Log Message:
  -----------
  Use statics in Machine


  Commit: 318d16b19009e09806002cc6f16622f0edd9044b
      https://github.com/MLton/mlton/commit/318d16b19009e09806002cc6f16622f0edd9044b
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-08 (Mon, 08 Jul 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Optional global for statics, reorder reals/statics to (data, global [option])


  Commit: 063fe520b40e3cf2a4b709e8bd982a3677777201
      https://github.com/MLton/mlton/commit/063fe520b40e3cf2a4b709e8bd982a3677777201
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-08 (Mon, 08 Jul 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/machine.fun
    M mlton/backend/rssa-tree.fun
    M mlton/backend/rssa-tree.sig
    M mlton/backend/static.fun
    M mlton/backend/static.sig

  Log Message:
  -----------
  Add statics to rssa


  Commit: 04f5a1981666c47da40721a1997796ce3f6d62d3
      https://github.com/MLton/mlton/commit/04f5a1981666c47da40721a1997796ce3f6d62d3
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-16 (Tue, 16 Jul 2019)

  Changed paths:
    M mlton/atoms/word-x-vector.fun
    M mlton/atoms/word-x-vector.sig
    M mlton/backend/backend.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/backend/rssa-tree.fun
    M mlton/backend/static.fun
    M mlton/backend/static.sig
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Add enough static support to recreate vector initialization

This will be inconsistent with objects since VectorInitElem
has not been changed so header support is not yet present


  Commit: 76c35a44df8ddfc6fddd93031bcbc46094f93a5a
      https://github.com/MLton/mlton/commit/76c35a44df8ddfc6fddd93031bcbc46094f93a5a
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-16 (Tue, 16 Jul 2019)

  Changed paths:
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Small cleanups on c-codegen for static changes


  Commit: 27734becf216af0382a9634b3eb25a89d56126eb
      https://github.com/MLton/mlton/commit/27734becf216af0382a9634b3eb25a89d56126eb
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-16 (Tue, 16 Jul 2019)

  Changed paths:
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Remove macro-indirection on vector inits and rename

The macro indirection is a bit out of place next to the
other initializations via vectors


  Commit: 5e1837e45015e39c5e7196d423bf925c389a0d40
      https://github.com/MLton/mlton/commit/5e1837e45015e39c5e7196d423bf925c389a0d40
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-16 (Tue, 16 Jul 2019)

  Changed paths:
    M mlton/backend/backend-atoms.fun
    M mlton/backend/backend-atoms.sig
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/backend/rssa-tree.fun
    M mlton/backend/rssa-tree.sig
    M mlton/backend/sources.mlb
    M mlton/backend/static.fun
    M mlton/backend/static.sig
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Move Static to BackendAtoms, make Static.t polymorphic instead of functorial over the index


  Commit: 3c63f0eb46fdb181cc26fd85e762e0da1923f438
      https://github.com/MLton/mlton/commit/3c63f0eb46fdb181cc26fd85e762e0da1923f438
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-18 (Thu, 18 Jul 2019)

  Changed paths:
    M include/c-chunk.h
    M mlton/backend/backend-atoms.sig
    M mlton/backend/backend.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Add statics support to backend, Machine.Operand.Static operand

No support yet in codegens. No support for accessing via a global
except for heap objects (which are copied) because that requires
extra support in c decls to assign the global

Used M as the signifier because S, T, C, and X are taken;
it could be taken to mean Memory or syMbol


  Commit: 5625df3802234fd940c27fbe1f81cf80af1d5f16
      https://github.com/MLton/mlton/commit/5625df3802234fd940c27fbe1f81cf80af1d5f16
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-18 (Thu, 18 Jul 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/limit-check.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/codegen/llvm-codegen/llvm-codegen.fun

  Log Message:
  -----------
  Machine.Operand.isLocation -> isDestination, fix odd backend behaviour

Backend doesn't generate Binds for destinations that were turned into
constants. As it happens, idempotency for existing constants turned
any such binds to self-moves, which although were ill-typed
(e.g. it could in theory include a move from the constant 3 into itself),
were eliminated to Noops by the move function

isLocation conflated two meanings: the ability to point to something,
and the ability to be a destination for moves.
Statics are constant pointers, and such are only in the latter class.
The former is not needed, and can be recovered from the type


  Commit: 2e24412dcb4bd41a1177075c6fedbc12ac508631
      https://github.com/MLton/mlton/commit/2e24412dcb4bd41a1177075c6fedbc12ac508631
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-18 (Thu, 18 Jul 2019)

  Changed paths:
    M include/c-chunk.h
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Add static support in the C codegen


  Commit: 035d556572db596e97b1885a51595e610f230a10
      https://github.com/MLton/mlton/commit/035d556572db596e97b1885a51595e610f230a10
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-18 (Thu, 18 Jul 2019)

  Changed paths:
    M include/c-chunk.h
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Correctly offset static accesses in C codegen by header size


  Commit: 7a52cb38b618ad4228f2cbf5758a5340edf40188
      https://github.com/MLton/mlton/commit/7a52cb38b618ad4228f2cbf5758a5340edf40188
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-21 (Sun, 21 Jul 2019)

  Changed paths:
    M mlton/backend/packed-representation.fun
    M mlton/backend/representation.sig
    M mlton/backend/ssa2-to-rssa.fun
    M mlton/backend/static.sig

  Log Message:
  -----------
  Add static construction to PackedRepresentation, allow non-pointer-sized words in Static.Data

This will require codegen changes which are not present, as the
non-pointer-sized words require a different structure layout
(packed with several fields)

ssa2-to-rssa does not take advantage of these changes in this patch


  Commit: b98ebc45cb46bf7eefc67ade8085f1f7036d040b
      https://github.com/MLton/mlton/commit/b98ebc45cb46bf7eefc67ade8085f1f7036d040b
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-21 (Sun, 21 Jul 2019)

  Changed paths:
    M mlton/backend/packed-representation.fun
    M mlton/backend/representation.sig
    M mlton/backend/ssa2-to-rssa.fun

  Log Message:
  -----------
  Add preliminary Static creation to ssa2-to-rssa

With the previous changes to statics, this isn't quite
supported in any codegen yet as it requires the more complicated
struct types.


  Commit: ff52fae7ab21fb0ede9e807970d0d30167972103
      https://github.com/MLton/mlton/commit/ff52fae7ab21fb0ede9e807970d0d30167972103
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-21 (Sun, 21 Jul 2019)

  Changed paths:
    M mlton/backend/machine.fun
    M mlton/backend/rssa-tree.fun
    M mlton/backend/static.fun

  Log Message:
  -----------
  Improve layout of statics in rssa/machine


  Commit: 8be3094d747adf138e267cfad5ccef7fcdbaf480
      https://github.com/MLton/mlton/commit/8be3094d747adf138e267cfad5ccef7fcdbaf480
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-21 (Sun, 21 Jul 2019)

  Changed paths:
    M mlton/backend/packed-representation.fun

  Log Message:
  -----------
  Pad Static.Object components from PackedRepresentation to prim


  Commit: f4a3b3d1db7714cfe2e3b8d8686f46e0670ad80f
      https://github.com/MLton/mlton/commit/f4a3b3d1db7714cfe2e3b8d8686f46e0670ad80f
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-22 (Mon, 22 Jul 2019)

  Changed paths:
    M mlton/backend/packed-representation.fun
    M mlton/backend/representation.sig
    M mlton/backend/ssa2-to-rssa.fun

  Log Message:
  -----------
  Return any elem from PackedRepresentation, not just word


  Commit: a103b66bc5e8c4c686cc33f13c4c1bcc375e616c
      https://github.com/MLton/mlton/commit/a103b66bc5e8c4c686cc33f13c4c1bcc375e616c
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-22 (Mon, 22 Jul 2019)

  Changed paths:
    M mlton/backend/backend.fun

  Log Message:
  -----------
  Fix order of statics in backend


  Commit: 46cfaa89a9740105f94412de9f2677f530f6a3b1
      https://github.com/MLton/mlton/commit/46cfaa89a9740105f94412de9f2677f530f6a3b1
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-22 (Mon, 22 Jul 2019)

  Changed paths:
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Fix offsets for statics in c codegen


  Commit: 189c902e284c547aa4550a6f9e5c0a1e1a0007be
      https://github.com/MLton/mlton/commit/189c902e284c547aa4550a6f9e5c0a1e1a0007be
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-22 (Mon, 22 Jul 2019)

  Changed paths:
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Fix static struct organization in c-codegen


  Commit: 9f26780f22b7dbda5c5a9293a6f741d68e6297e7
      https://github.com/MLton/mlton/commit/9f26780f22b7dbda5c5a9293a6f741d68e6297e7
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-22 (Mon, 22 Jul 2019)

  Changed paths:
    M include/c-chunk.h

  Log Message:
  -----------
  Fix static macro in c-chunk.h


  Commit: 463ecb4b75bde7e89da2ed6ab631a72c59d0d08f
      https://github.com/MLton/mlton/commit/463ecb4b75bde7e89da2ed6ab631a72c59d0d08f
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-22 (Mon, 22 Jul 2019)

  Changed paths:
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Add packed attribute to static structures


  Commit: 9aebf23cc76fc43c86539e28cc7cc56f746a073c
      https://github.com/MLton/mlton/commit/9aebf23cc76fc43c86539e28cc7cc56f746a073c
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-22 (Mon, 22 Jul 2019)

  Changed paths:
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Ensure that static offsets are taken after casting to pointer in c codegen


  Commit: 945d416c1c0a9dd386c05c40e33096783df5ea88
      https://github.com/MLton/mlton/commit/945d416c1c0a9dd386c05c40e33096783df5ea88
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-22 (Mon, 22 Jul 2019)

  Changed paths:
    M runtime/gc/invariant.c

  Log Message:
  -----------
  Remove GC invariant that all object pointers point into heap


  Commit: 46bf90a1c1e5fe9f2fc3bfb1d8f82c29081b3701
      https://github.com/MLton/mlton/commit/46bf90a1c1e5fe9f2fc3bfb1d8f82c29081b3701
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-22 (Mon, 22 Jul 2019)

  Changed paths:
    M runtime/gc/cheney-copy.c
    M runtime/gc/forward.c
    M runtime/gc/forward.h

  Log Message:
  -----------
  Only forward object pointers in heap on major cheney copy


  Commit: 82f841d09b2c9b64a748030c9318f15940362068
      https://github.com/MLton/mlton/commit/82f841d09b2c9b64a748030c9318f15940362068
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-24 (Wed, 24 Jul 2019)

  Changed paths:
    M mlton/backend/backend-atoms.fun
    M mlton/backend/backend-atoms.sig
    M mlton/backend/backend.fun
    M mlton/backend/packed-representation.fun
    M mlton/backend/static.fun
    M mlton/backend/static.sig

  Log Message:
  -----------
  Add object/vector creation helpers in Static


  Commit: 2be850aee49292c0a7ed06113b2cb1bac033bbce
      https://github.com/MLton/mlton/commit/2be850aee49292c0a7ed06113b2cb1bac033bbce
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-25 (Thu, 25 Jul 2019)

  Changed paths:
    M runtime/gc/translate.c
    M runtime/gc/translate.h

  Log Message:
  -----------
  Only translate addresses in the from space for gc translate


  Commit: ec2a3afa2bba157819fd59171d3e127360b681ea
      https://github.com/MLton/mlton/commit/ec2a3afa2bba157819fd59171d3e127360b681ea
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-25 (Thu, 25 Jul 2019)

  Changed paths:
    M runtime/gc/dfs-mark.c
    M runtime/gc/heap.h
    M runtime/gc/heap_predicates.c

  Log Message:
  -----------
  Only follow pointers into heap in dfs-mark


  Commit: d43f54de26e00c6db98333068426093e2a45a8fd
      https://github.com/MLton/mlton/commit/d43f54de26e00c6db98333068426093e2a45a8fd
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-25 (Thu, 25 Jul 2019)

  Changed paths:
    M runtime/gc/dfs-mark.c

  Log Message:
  -----------
  dfs mark returns immediately if root is not in heap


  Commit: 466e98e0365d62d54029b6bd1505cb4d75555df4
      https://github.com/MLton/mlton/commit/466e98e0365d62d54029b6bd1505cb4d75555df4
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-25 (Thu, 25 Jul 2019)

  Changed paths:
    M mlton/backend/ssa2-to-rssa.fun

  Log Message:
  -----------
  Fix typo not allocating static arrays correctly


  Commit: c6aae5465c11e3eb023d4a004616151c78310730
      https://github.com/MLton/mlton/commit/c6aae5465c11e3eb023d4a004616151c78310730
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-25 (Thu, 25 Jul 2019)

  Changed paths:
    M mlton/backend/packed-representation.fun

  Log Message:
  -----------
  Ensure padding is always present for static objects

In particular if a Word32 precedes an Objptr,
no padding would have been added. That pointer could even
be a Word64 if it is just a tag.


  Commit: 8d51b9a17e718f5ebd3b0f80362bef46e6aee789
      https://github.com/MLton/mlton/commit/8d51b9a17e718f5ebd3b0f80362bef46e6aee789
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-29 (Mon, 29 Jul 2019)

  Changed paths:
    M mlton/backend/packed-representation.fun

  Log Message:
  -----------
  Correctly pad static tags to the width of the representation, if less than an object pointer


  Commit: 5c63c1e2faa25d40583bfa47ed9e24f7437ca52e
      https://github.com/MLton/mlton/commit/5c63c1e2faa25d40583bfa47ed9e24f7437ca52e
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-29 (Mon, 29 Jul 2019)

  Changed paths:
    M mlton/backend/packed-representation.fun

  Log Message:
  -----------
  Also set the width for ShiftAndTag correctly


  Commit: 893778145b87a19ce473310f23ec3b5ada5f0bbd
      https://github.com/MLton/mlton/commit/893778145b87a19ce473310f23ec3b5ada5f0bbd
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-30 (Tue, 30 Jul 2019)

  Changed paths:
    M mlton/backend/packed-representation.fun

  Log Message:
  -----------
  Fix WordRep.staticTuple resizing too late


  Commit: 7a259c922b29b92dd3b6d9fbdd5abee99d0ed991
      https://github.com/MLton/mlton/commit/7a259c922b29b92dd3b6d9fbdd5abee99d0ed991
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-30 (Tue, 30 Jul 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Add offset field to Machine.Operand.Static for easier codegen

Reading the statics field to translate the operand
would require unnecessary effort for x86/amd64 codegens.


  Commit: d83a292e2a0e483e3dcae49e9e66efe6e2bdcdd9
      https://github.com/MLton/mlton/commit/d83a292e2a0e483e3dcae49e9e66efe6e2bdcdd9
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-30 (Tue, 30 Jul 2019)

  Changed paths:
    M mlton/codegen/amd64-codegen/amd64-mlton-basic.fun
    M mlton/codegen/amd64-codegen/amd64-mlton-basic.sig
    M mlton/codegen/amd64-codegen/amd64-translate.fun

  Log Message:
  -----------
  Add preliminary statics support to amd64 codegen


  Commit: 4ab8daa585e9b2336ba77aac0e085503b4ae976c
      https://github.com/MLton/mlton/commit/4ab8daa585e9b2336ba77aac0e085503b4ae976c
  Author: Jason Carr <jca...@gm...>
  Date:   2019-08-01 (Thu, 01 Aug 2019)

  Changed paths:
    M mlton/codegen/x86-codegen/x86-mlton-basic.fun
    M mlton/codegen/x86-codegen/x86-mlton-basic.sig
    M mlton/codegen/x86-codegen/x86-translate.fun

  Log Message:
  -----------
  Mirror amd64 changes to x86 codegen


  Commit: 317ea1ced6300b3891af4b0115f0677d17ee7f60
      https://github.com/MLton/mlton/commit/317ea1ced6300b3891af4b0115f0677d17ee7f60
  Author: Jason Carr <jca...@gm...>
  Date:   2019-08-01 (Thu, 01 Aug 2019)

  Changed paths:
    M mlton/codegen/amd64-codegen/amd64-translate.fun
    M mlton/codegen/x86-codegen/x86-translate.fun

  Log Message:
  -----------
  Use Heap class in native codegens for statics

Potential unsoundness since an objptr that looks like it's on
the heap to the code might point to a static


  Commit: 6f9d88d2a0a2b9098e34e3a5ec8318c3c906f872
      https://github.com/MLton/mlton/commit/6f9d88d2a0a2b9098e34e3a5ec8318c3c906f872
  Author: Jason Carr <jca...@gm...>
  Date:   2019-08-02 (Fri, 02 Aug 2019)

  Changed paths:
    M include/amd64-main.h
    M include/c-main.h
    M include/common-main.h
    M include/x86-main.h
    M mlton/codegen/c-codegen/c-codegen.fun
    M runtime/gc/gc_state.h
    M runtime/gc/init-world.c
    M runtime/gc/init-world.h

  Log Message:
  -----------
  Update static initialization for heap objects and empty inits


  Commit: e4f20303e7075ae204359c8a258355d272e54656
      https://github.com/MLton/mlton/commit/e4f20303e7075ae204359c8a258355d272e54656
  Author: Jason Carr <jca...@gm...>
  Date:   2019-08-05 (Mon, 05 Aug 2019)

  Changed paths:
    M mlton/backend/packed-representation.fun

  Log Message:
  -----------
  Fix the shift amount in static ShiftAndTag


  Commit: 1c5e44fedb61b338c6091f588d21fb3489e92f7e
      https://github.com/MLton/mlton/commit/1c5e44fedb61b338c6091f588d21fb3489e92f7e
  Author: Jason Carr <jca...@gm...>
  Date:   2019-08-05 (Mon, 05 Aug 2019)

  Changed paths:
    M runtime/gc/init-world.c

  Log Message:
  -----------
  Ensure alignment with GC initObjects


  Commit: 8030aed870feb9748ce570a44da21b4044420e7c
      https://github.com/MLton/mlton/commit/8030aed870feb9748ce570a44da21b4044420e7c
  Author: Jason Carr <jca...@gm...>
  Date:   2019-08-12 (Mon, 12 Aug 2019)

  Changed paths:
    M mlton/backend/ssa2-to-rssa.fun
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun

  Log Message:
  -----------
  Add some flags to control how static allocation occurs


  Commit: 28a4b66a9433dcbc6a7680deaaf9ce52ab1e9420
      https://github.com/MLton/mlton/commit/28a4b66a9433dcbc6a7680deaaf9ce52ab1e9420
  Author: Jason Carr <jca...@gm...>
  Date:   2019-08-12 (Mon, 12 Aug 2019)

  Changed paths:
    M mlton/codegen/llvm-codegen/llvm-codegen.fun

  Log Message:
  -----------
  Add LLVM support for Statics


  Commit: 90255a7b07cb3e47d2b5bfd34c951b8c8fbfc45e
      https://github.com/MLton/mlton/commit/90255a7b07cb3e47d2b5bfd34c951b8c8fbfc45e
  Author: Jason Carr <jca...@gm...>
  Date:   2019-08-12 (Mon, 12 Aug 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/bounce-vars.fun
    M mlton/backend/limit-check.fun
    M mlton/backend/packed-representation.fun
    M mlton/backend/rssa-restore.fun
    M mlton/backend/rssa-tree.fun
    M mlton/backend/rssa-tree.sig
    M mlton/backend/ssa2-to-rssa.fun

  Log Message:
  -----------
  Replace isMutable in Rssa binds with pinned

A pinned variable in Rssa is created by splitting live ranges
in bounce-vars, and so the only difference is that it will not
be copy-propagated as a variable (but may be once it is allocated
to a location in backend). The alternative would require that copy
propagation calculate complicated liveness information every time
to determine if a variable can be safely merged with another.


  Commit: 9b8ccecbcc282ddb55d9ac9b0bbaaa86c22ab055
      https://github.com/MLton/mlton/commit/9b8ccecbcc282ddb55d9ac9b0bbaaa86c22ab055
  Author: Jason Carr <jca...@gm...>
  Date:   2019-08-12 (Mon, 12 Aug 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/packed-representation.fun
    M mlton/codegen/amd64-codegen/amd64-translate.fun
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/codegen/x86-codegen/x86-translate.fun

  Log Message:
  -----------
  Cleanup unused variables


  Commit: 2c2a6fb57e51dba293c9d0e93b305562dabd9e2b
      https://github.com/MLton/mlton/commit/2c2a6fb57e51dba293c9d0e93b305562dabd9e2b
  Author: Jason Carr <jca...@gm...>
  Date:   2019-08-12 (Mon, 12 Aug 2019)

  Changed paths:
    M benchmark/main.sml
    M lib/mlton/basic/counter.sig
    M lib/mlton/basic/counter.sml
    M lib/mlton/basic/directed-graph.sml
    M lib/mlton/basic/directed-sub-graph.sml
    M lib/mlton/basic/hash-table.sig
    M lib/mlton/basic/hash-table.sml
    M lib/mlton/basic/regexp.sml
    M lib/mlton/basic/string.sml
    M mlton/atoms/c-function.fun
    M mlton/atoms/ffi.fun
    M mlton/atoms/id.fun
    M mlton/atoms/prim.fun
    M mlton/atoms/profile-label.fun
    M mlton/atoms/real-size.fun
    M mlton/atoms/real-size.sig
    M mlton/atoms/source-info.fun
    M mlton/atoms/symbol.fun
    M mlton/atoms/symbol.sig
    M mlton/atoms/word-size.fun
    M mlton/atoms/word-size.sig
    M mlton/backend/backend.fun
    M mlton/backend/implement-profiling.fun
    M mlton/backend/machine.fun
    M mlton/backend/objptr-tycon.fun
    M mlton/backend/objptr-tycon.sig
    M mlton/backend/rep-type.fun
    M mlton/backend/rep-type.sig
    M mlton/backend/rssa-restore.fun
    M mlton/backend/ssa2-to-rssa.fun
    M mlton/codegen/amd64-codegen/amd64-liveness.fun
    M mlton/codegen/amd64-codegen/amd64.fun
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/codegen/llvm-codegen/llvm-codegen.fun
    M mlton/codegen/x86-codegen/x86-generate-transfers.fun
    M mlton/codegen/x86-codegen/x86-liveness.fun
    M mlton/codegen/x86-codegen/x86.fun
    M mlton/control/bits.sml
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/elaborate/elaborate-env.fun
    M mlton/elaborate/elaborate-mlbs.fun
    M mlton/elaborate/type-env.fun
    M mlton/front-end/mlb-front-end.fun
    M mlton/main/lookup-constant.fun
    M mlton/main/main.fun
    M mlton/ssa/common-subexp.fun
    M mlton/ssa/duplicate-globals.fun
    M mlton/ssa/global.fun
    M mlton/ssa/loop-unroll.fun
    M mlton/ssa/restore.fun
    M mlton/ssa/restore2.fun
    M mlton/ssa/simplify.fun
    M mlton/ssa/simplify2.fun
    M mlton/ssa/type-check.fun
    M mlton/ssa/type-check2.fun
    M mlton/xml/monomorphise.fun
    M mlton/xml/sxml-simplify.fun
    M mlton/xml/xml-simplify.fun

  Log Message:
  -----------
  Merge branch 'master' into static-alloc


  Commit: cfe230f05ccc8ba38fbe79d2e63cbcd43d86f3a9
      https://github.com/MLton/mlton/commit/cfe230f05ccc8ba38fbe79d2e63cbcd43d86f3a9
  Author: Jason Carr <jca...@gm...>
  Date:   2019-08-12 (Mon, 12 Aug 2019)

  Changed paths:
    M mlton/atoms/sources.mlb
    M mlton/backend/backend-atoms.fun
    M mlton/backend/backend-atoms.sig
    M mlton/backend/packed-representation.fun
    M mlton/backend/ssa2-to-rssa.fun
    M mlton/backend/static.fun
    M mlton/backend/static.sig
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Allow Statics to contain RealX entries as well as WordXs


  Commit: 22eb8642cd415864f9757b521cc8d1c94e624bad
      https://github.com/MLton/mlton/commit/22eb8642cd415864f9757b521cc8d1c94e624bad
  Author: Jason Carr <jca...@gm...>
  Date:   2019-08-12 (Mon, 12 Aug 2019)

  Changed paths:
    M mlton/backend/packed-representation.fun

  Log Message:
  -----------
  Correctly handle reals in packed tuples and disable when CF is disallowed


  Commit: 55d20f2f9a5b252526f7831a7871ee7424fde3ef
      https://github.com/MLton/mlton/commit/55d20f2f9a5b252526f7831a7871ee7424fde3ef
  Author: Jason Carr <jca...@gm...>
  Date:   2019-08-12 (Mon, 12 Aug 2019)

  Changed paths:
    M mlton/backend/machine.fun

  Log Message:
  -----------
  Fix Machine.typeCheck rejecting uses of static 0


  Commit: d0cfeadb53fb67751062b863f925b16879068a07
      https://github.com/MLton/mlton/commit/d0cfeadb53fb67751062b863f925b16879068a07
  Author: Jason Carr <jca...@gm...>
  Date:   2019-08-14 (Wed, 14 Aug 2019)

  Changed paths:
    M mlton/atoms/real-x.sig
    M mlton/backend/packed-representation.fun
    M mlton/backend/ssa2-to-rssa.fun

  Log Message:
  -----------
  Fix disappearing commit content


  Commit: 2d46cc122d93de2fe95c3f143d79baf8043dbb3b
      https://github.com/MLton/mlton/commit/2d46cc122d93de2fe95c3f143d79baf8043dbb3b
  Author: Jason Carr <jca...@gm...>
  Date:   2019-08-14 (Wed, 14 Aug 2019)

  Changed paths:
    M runtime/gc/dfs-mark.c

  Log Message:
  -----------
  Fix issue introduced while attempting to handle statics in DFS Mark

(I wasn't a careful reader, isPointerInHeap checks that something is
in the heap when it is a pointer, not that it is a pointer which is in
the heap)


  Commit: 086b4a6dfd2ff5a940ee875eee01d217aa63b8c1
      https://github.com/MLton/mlton/commit/086b4a6dfd2ff5a940ee875eee01d217aa63b8c1
  Author: Jason Carr <jca...@gm...>
  Date:   2019-08-14 (Wed, 14 Aug 2019)

  Changed paths:
    M mlton/atoms/sources.cm

  Log Message:
  -----------
  Add REAL_X to atoms/sources.cm


  Commit: 702872ce4ccf01cd8a71e43c5802a135a4f4a84a
      https://github.com/MLton/mlton/commit/702872ce4ccf01cd8a71e43c5802a135a4f4a84a
  Author: Jason Carr <jca...@gm...>
  Date:   2019-08-14 (Wed, 14 Aug 2019)

  Changed paths:
    M mlton/backend/backend.fun

  Log Message:
  -----------
  Regrettably return bogus ops to strange offsets in backend

Conceptually, machine shouldn't be restricted from offsets into
constant words. Codegens other than the native ones handle it fine,
but the burden to support and test it on the native codegens isn't worth
it and in practice we have no simplifying passes for machine.


  Commit: 2d4849399230d628f80e8df662c078c3d4270be8
      https://github.com/MLton/mlton/commit/2d4849399230d628f80e8df662c078c3d4270be8
  Author: Jason Carr <jca...@gm...>
  Date:   2019-08-14 (Wed, 14 Aug 2019)

  Changed paths:
    M runtime/gc/mark-compact.c

  Log Message:
  -----------
  Ensure mark-compact does not forward pointers found in an object if they aren't in the heap

Unfortunately, I tried and failed to find stronger assertions,
as many non-heap pointers take part in threading.


  Commit: 8b14340e4f93ecc9d8076f45b6c561d1ecab609f
      https://github.com/MLton/mlton/commit/8b14340e4f93ecc9d8076f45b6c561d1ecab609f
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-02 (Mon, 02 Sep 2019)

  Changed paths:
    M mlton/codegen/amd64-codegen/amd64-translate.fun
    M mlton/codegen/x86-codegen/x86-translate.fun

  Log Message:
  -----------
  Minimize diff with `master`

Avoid inducing a white space change across a 200 line function.


  Commit: 7d58c831445618e33e97d5a77b0c8b1ba638a250
      https://github.com/MLton/mlton/commit/7d58c831445618e33e97d5a77b0c8b1ba638a250
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-02 (Mon, 02 Sep 2019)

  Changed paths:
    M mlton/backend/sources.cm

  Log Message:
  -----------
  Organize files in `backend/sources.cm` as in `backend/sources.mlb`


  Commit: f2ef44c1b3f6c911351bdc0e2fc7c0c27abebf98
      https://github.com/MLton/mlton/commit/f2ef44c1b3f6c911351bdc0e2fc7c0c27abebf98
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-02 (Mon, 02 Sep 2019)

  Changed paths:
    M include/common-main.h

  Log Message:
  -----------
  Alphabetize lines in `include/common-main.h`


  Commit: 38fa7ade74be718741f2f836c6a2019cd18267cf
      https://github.com/MLton/mlton/commit/38fa7ade74be718741f2f836c6a2019cd18267cf
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-02 (Mon, 02 Sep 2019)

  Changed paths:
    M mlton/backend/backend-atoms.sig

  Log Message:
  -----------
  Simplify `sharing` constraints in `backend/backend-atoms.sig`


  Commit: 729f0081580ea1f1d543a480a5a783c3d89cc4c1
      https://github.com/MLton/mlton/commit/729f0081580ea1f1d543a480a5a783c3d89cc4c1
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-02 (Mon, 02 Sep 2019)

  Changed paths:
    M mlton/backend/static.sig

  Log Message:
  -----------
  Alphabetize structures in `backend/static.sig`


  Commit: 4aa8a7133afe66edd76e4e10d8695ca2d501c191
      https://github.com/MLton/mlton/commit/4aa8a7133afe66edd76e4e10d8695ca2d501c191
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-02 (Mon, 02 Sep 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/machine.fun
    M mlton/backend/packed-representation.fun
    M mlton/backend/rep-type.fun
    M mlton/backend/rssa-tree.sig
    M mlton/backend/ssa2-to-rssa.fun
    M mlton/backend/static.fun
    M mlton/codegen/amd64-codegen/amd64-mlton-basic.fun
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Fixup whitespace and formatting


  Commit: 8100d8d0b56b74fe71bdfe8e573ffb987579806b
      https://github.com/MLton/mlton/commit/8100d8d0b56b74fe71bdfe8e573ffb987579806b
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-02 (Mon, 02 Sep 2019)

  Changed paths:
    M runtime/gc/heap.h
    M runtime/gc/heap_predicates.c

  Log Message:
  -----------
  Alphabetize/organize `is{Objptr,Pointer}In{FromSpace,Heap,Nursery,OldGen}` functions


  Commit: caccf2fba02bf919bb42154f3e8ab53c3255ba44
      https://github.com/MLton/mlton/commit/caccf2fba02bf919bb42154f3e8ab53c3255ba44
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-02 (Mon, 02 Sep 2019)

  Changed paths:
    M runtime/gc/forward.h

  Log Message:
  -----------
  Alphabetize `forwardObjptrIfIn{Heap,Nursery}` function declarations


  Commit: a1a81be099cecbb4526b710044dc6065410f24cb
      https://github.com/MLton/mlton/commit/a1a81be099cecbb4526b710044dc6065410f24cb
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-02 (Mon, 02 Sep 2019)

  Changed paths:
    M runtime/gc/forward.c

  Log Message:
  -----------
  Exit `forwardObjptrIfInNursery` if `p > s->frontier`

A objptr to a static object will usually have a lower address than
that of the heap, but it is not guaranteed.


  Commit: 13a993751e46d01995d27b3ec9be2b5a5a8c37dd
      https://github.com/MLton/mlton/commit/13a993751e46d01995d27b3ec9be2b5a5a8c37dd
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-02 (Mon, 02 Sep 2019)

  Changed paths:
    M runtime/gc/invariant.c

  Log Message:
  -----------
  Restore, but disable, `IsObjptrInFromSpace` checks in `invariantForGC`

These are useful checks.  It would be good to restore them if an
efficient `isObjptrStatic` predicate were available.


  Commit: b455bf3bd637d55aed6ed3665690e3652c09d4e5
      https://github.com/MLton/mlton/commit/b455bf3bd637d55aed6ed3665690e3652c09d4e5
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-04 (Wed, 04 Sep 2019)

  Changed paths:
    M mlton/backend/packed-representation.fun
    M mlton/backend/representation.sig
    M mlton/backend/ssa2-to-rssa.fun

  Log Message:
  -----------
  Eliminate unnecessary polymorphism in `signature REPRESENTATION`


  Commit: 575d00aff3a8165cb07724781be813179779fb72
      https://github.com/MLton/mlton/commit/575d00aff3a8165cb07724781be813179779fb72
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-05 (Thu, 05 Sep 2019)

  Changed paths:
    M mlton/backend/backend.fun

  Log Message:
  -----------
  Fix typo in comment


  Commit: e98bbf87a0713d106c5d0450f723f5c03be1c90c
      https://github.com/MLton/mlton/commit/e98bbf87a0713d106c5d0450f723f5c03be1c90c
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-05 (Thu, 05 Sep 2019)

  Changed paths:
    M include/c-chunk.h

  Log Message:
  -----------
  Update `#define M` in `c-chunk.h`

The static's are imported with the type `PointerAux` (`unsigned char`)
and the offset is a byte offset. It may be the case that `M` is only
every used with `Objptr` (which is defined as `PointerAux*`), but it
is more proper to first offset then cast.


  Commit: 7182739bc417b0c906fd8696825b91e3935ec6ce
      https://github.com/MLton/mlton/commit/7182739bc417b0c906fd8696825b91e3935ec6ce
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-05 (Thu, 05 Sep 2019)

  Changed paths:
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Replace `{Real,Word}Size.toC` with `{Real,Word}Size.toString`


  Commit: bcbb88fdb2121a3e45bb7c6f4cc808922a1ad178
      https://github.com/MLton/mlton/commit/bcbb88fdb2121a3e45bb7c6f4cc808922a1ad178
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-05 (Thu, 05 Sep 2019)

  Changed paths:
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Tweak formatting of generated `static_<n>` declarations


  Commit: 5d6621a9a65dca4494312d7f433ce20fe253ebd6
      https://github.com/MLton/mlton/commit/5d6621a9a65dca4494312d7f433ce20fe253ebd6
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-05 (Thu, 05 Sep 2019)

  Changed paths:
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/codegen/llvm-codegen/llvm-codegen.fun

  Log Message:
  -----------
  Don't declare `Heap` statics in `.c` and `.ll` files defining `Chunk<N>` fns

`Heap` statics are declared `const static` in the "main" `.c` file and will not
be linkable from the `.c` and `.ll` files defining `Chunk<N>` functions.

In practice, there won't be any references to `Heap` statics from a `Chunk<N>`
function (they will be referenced as global objptrs into the heap) and the
symbol won't appear in the to-be-linked object file.  Nonetheless, it is easy to
skip emitting declarations for `Heap` statics that are known not to be
referenced.


  Commit: 6b058ca6b1cc4116d0d2755be9fe3d36a14db63f
      https://github.com/MLton/mlton/commit/6b058ca6b1cc4116d0d2755be9fe3d36a14db63f
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-05 (Thu, 05 Sep 2019)

  Changed paths:
    M mlton/backend/ssa2-to-rssa.fun

  Log Message:
  -----------
  Fix `Error.bug` string in `translateGlobalStatics.getObjptrTycon`


  Commit: 6bcc988e23dcbdfc2382e6e4e75c9179bb0cbe39
      https://github.com/MLton/mlton/commit/6bcc988e23dcbdfc2382e6e4e75c9179bb0cbe39
  Author: Jason Carr <jca...@gm...>
  Date:   2019-09-05 (Thu, 05 Sep 2019)

  Changed paths:
    M mlton/backend/static.fun
    M mlton/backend/static.sig

  Log Message:
  -----------
  Add Static.sequence


  Commit: 1c98551c8c3d44aae299c7deeea9e606fbed54f5
      https://github.com/MLton/mlton/commit/1c98551c8c3d44aae299c7deeea9e606fbed54f5
  Author: Jason Carr <jca...@gm...>
  Date:   2019-09-05 (Thu, 05 Sep 2019)

  Changed paths:
    M mlton/backend/ssa2-to-rssa.fun

  Log Message:
  -----------
  Eliminate duplicate functionality in ssa2-to-rssa


  Commit: 4a2af6d96dc48961fe82e93f2c13986a02f8a4ed
      https://github.com/MLton/mlton/commit/4a2af6d96dc48961fe82e93f2c13986a02f8a4ed
  Author: Jason Carr <jca...@gm...>
  Date:   2019-09-05 (Thu, 05 Sep 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/limit-check.fun
    M mlton/backend/static.fun
    M mlton/backend/static.sig
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Static.header -> metadata


  Commit: 13012fc3ab517b2b86e2e247486c5ee944ee3b7c
      https://github.com/MLton/mlton/commit/13012fc3ab517b2b86e2e247486c5ee944ee3b7c
  Author: Jason Carr <jca...@gm...>
  Date:   2019-09-05 (Thu, 05 Sep 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/limit-check.fun
    M mlton/backend/packed-representation.fun
    M mlton/backend/representation.sig
    M mlton/backend/ssa2-to-rssa.fun
    M mlton/backend/static.fun
    M mlton/backend/static.sig
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/codegen/llvm-codegen/llvm-codegen.fun

  Log Message:
  -----------
  Change extra datatypes in statics to own structs (e.g. location -> Location.t)


  Commit: d40c73825b36973a806980cdbc1598a0f09a4d22
      https://github.com/MLton/mlton/commit/d40c73825b36973a806980cdbc1598a0f09a4d22
  Author: Jason Carr <jca...@gm...>
  Date:   2019-09-05 (Thu, 05 Sep 2019)

  Changed paths:
    M runtime/gc/init-world.c

  Log Message:
  -----------
  Remove erroneous GC_SEQUENCE_METADATA_SIZE factor from objectInits


  Commit: 6cb98b633fd5bc79ed81b3d911f819c478658b5e
      https://github.com/MLton/mlton/commit/6cb98b633fd5bc79ed81b3d911f819c478658b5e
  Author: Jason Carr <jca...@gm...>
  Date:   2019-09-05 (Thu, 05 Sep 2019)

  Changed paths:
    M mlton/backend/static.fun

  Log Message:
  -----------
  Fix bad cases from 13012fc3


  Commit: 3e563a7b2179374a5f1786128eadb8498ddd77f3
      https://github.com/MLton/mlton/commit/3e563a7b2179374a5f1786128eadb8498ddd77f3
  Author: Jason Carr <jca...@gm...>
  Date:   2019-09-05 (Thu, 05 Sep 2019)

  Changed paths:
    M mlton/backend/machine.fun

  Log Message:
  -----------
  isDestination GCState changed to false


  Commit: 82c2000a20a16b103df401044c6aea8dbda98736
      https://github.com/MLton/mlton/commit/82c2000a20a16b103df401044c6aea8dbda98736
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-07 (Sat, 07 Sep 2019)

  Changed paths:
    M mlton/backend/packed-representation.fun
    M mlton/backend/representation.sig
    M mlton/backend/ssa2-to-rssa.fun

  Log Message:
  -----------
  Change result type of `static` function to `StaticOrElem.t option`

A static element that requires casting a `Real<N>` to `Word<N>` cannot
be supported when `RealX.disableCF()`, such as when using SML/NJ.
Rather than guard calls to `static`, return an `option` to signal that
the static element could not be created.


  Commit: 0c1d396ba6cb7c0f4703ecd11380061a6dd440b2
      https://github.com/MLton/mlton/commit/0c1d396ba6cb7c0f4703ecd11380061a6dd440b2
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-07 (Sat, 07 Sep 2019)

  Changed paths:
    M mlton/backend/ssa2-to-rssa.fun

  Log Message:
  -----------
  Don't use `RealX.disableCF()` to guard creating a static object

With 82c2000a2 (Change result type of `static` function to
`StaticOrElem.t option` static-alloc), it is not necessary to guard
the call to `static` by `RealX.disableCF()`.  This allows objects with
"pure reals" (e.g., a `Real32.real * Real32.real * Real32.real`), that
don't require casting to words for packing into larger components, to
be created even if `RealX.disableCF()`, such as when using SML/NJ.


  Commit: 9ba316506497cad3810a39bb1af1495302f06d71
      https://github.com/MLton/mlton/commit/9ba316506497cad3810a39bb1af1495302f06d71
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-07 (Sat, 07 Sep 2019)

  Changed paths:
    M mlton/atoms/real-x.sig

  Log Message:
  -----------
  Don't export `REALX.disableCF`


  Commit: 10cd2f57622b02c4c8792c136b014280fb8664c3
      https://github.com/MLton/mlton/commit/10cd2f57622b02c4c8792c136b014280fb8664c3
  Author: Jason Carr <jca...@gm...>
  Date:   2019-09-08 (Sun, 08 Sep 2019)

  Changed paths:
    M mlton/backend/limit-check.fun

  Log Message:
  -----------
  Construct a new object type in limit-check instead of using a headerless boolean


  Commit: eacb8997a0c4433f7dd441fdd7c1c7d25914b4ef
      https://github.com/MLton/mlton/commit/eacb8997a0c4433f7dd441fdd7c1c7d25914b4ef
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-09 (Mon, 09 Sep 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/static.fun
    M mlton/backend/static.sig
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Change `metadata: WordXVector.t` field of `Static.T` to `metadata: WordX.t list`

The metadata of an object need not have all fields of the same size.
In particular, a sequence object's metadata is comprised of a counter
field (of `WordSize.seqIndex` size), a length field (also of
`WordSize.seqIndex` size), and a header.  We happen to use 64-bit
sequence indices and 64-bit headers on 64-bit platforms, but that is
not required.  (Albeit, it is also not tested.)


  Commit: 7b8f8853655115b9172ecf33b952c3bedc0c8d79
      https://github.com/MLton/mlton/commit/7b8f8853655115b9172ecf33b952c3bedc0c8d79
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-09 (Mon, 09 Sep 2019)

  Changed paths:
    M mlton/atoms/word-x-vector.fun
    M mlton/atoms/word-x-vector.sig

  Log Message:
  -----------
  Eliminate unused `WordXVector.size: t -> Bytes.t`


  Commit: 36c4d172af916ec884aff1fe95c45b034e3d46d8
      https://github.com/MLton/mlton/commit/36c4d172af916ec884aff1fe95c45b034e3d46d8
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-09 (Mon, 09 Sep 2019)

  Changed paths:
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Share code for metadata declaration and initialization in `c-codgen.fun`


  Commit: 765d16254aeee33677ecc4366746e8641239902e
      https://github.com/MLton/mlton/commit/765d16254aeee33677ecc4366746e8641239902e
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-17 (Tue, 17 Sep 2019)

  Changed paths:
    M mlton/backend/static.fun
    M mlton/backend/static.sig

  Log Message:
  -----------
  Implement `Static.{data,location,metadata}` selector functions


  Commit: 4a49d4d88ab1775a02958f4744090814056477d2
      https://github.com/MLton/mlton/commit/4a49d4d88ab1775a02958f4744090814056477d2
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-17 (Tue, 17 Sep 2019)

  Changed paths:
    M mlton/backend/ssa2-to-rssa.fun
    M mlton/backend/static.fun
    M mlton/backend/static.sig
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun

  Log Message:
  -----------
  Refactor static alloc/init controls

New controls are:

 * `-static-alloc-wordvector-consts {true|false}`

   Controls whether or not `WordXVector` constants are converted to
   statics (with `ImmStatic` location) at `Ssa2ToRssa`.

 * `-static-init-arrays {true|false}`

   Controls whether or not `Array_alloc` primitives are converted
   to statics (with `MutStatic` or `Heap` location) at `Ssa2ToRssa`.

 * `-static-init-objects {none|staticAllocOnly|all}`

   Controls whether or not `Object` expressions are converted to
   statics at `Ssa2ToRssa`.  If `staticAllocOnly`, then an object that
   would be converted to a static with `Heap` location is not
   converted to a static.


  Commit: b13f7a805cfdf2655a3abb2d736844338af1fc06
      https://github.com/MLton/mlton/commit/b13f7a805cfdf2655a3abb2d736844338af1fc06
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-17 (Tue, 17 Sep 2019)

  Changed paths:
    M mlton/backend/static.fun
    M mlton/backend/static.sig
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Add `Static.dataSize: 'a t -> Bytes.t`

And eliminate `Static.Data.size: 'a Static.Data.t -> WordSize.t * int`.


  Commit: b3873f1d8bbf9113af7003b57646baa4ed431e1e
      https://github.com/MLton/mlton/commit/b3873f1d8bbf9113af7003b57646baa4ed431e1e
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-17 (Tue, 17 Sep 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Allocate WordXVector constants created by RSSA according to `!Control.staticAllocWordVectorConsts`


  Commit: deb60810a13f79ab8816f6848d227f7b2f738b4a
      https://github.com/MLton/mlton/commit/deb60810a13f79ab8816f6848d227f7b2f738b4a
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-17 (Tue, 17 Sep 2019)

  Changed paths:
    M mlton/backend/ssa2-to-rssa.fun
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun

  Log Message:
  -----------
  Additional static alloc/init controls

New controls are:

 * `-static-alloc-arrays {true|false}`

   Controls whether or not `Array_alloc` primitives that can be
   statically initialized are forced to `Heap` location.

 * `-static-alloc-objects {true|false}`

   Controls whether or not `Object` expressions that can be statically
   initialized are forced to `Heap` location.


  Commit: 80ffc2c108c07689c3f2a952fe20d00cab5878bf
      https://github.com/MLton/mlton/commit/80ffc2c108c07689c3f2a952fe20d00cab5878bf
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-17 (Tue, 17 Sep 2019)

  Changed paths:
    M mlton/backend/ssa2-to-rssa.fun

  Log Message:
  -----------
  Fix bug introduced by 4a49d4d88


  Commit: 8ced4920efb42ed10e69c75da4d9d77363401010
      https://github.com/MLton/mlton/commit/8ced4920efb42ed10e69c75da4d9d77363401010
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-17 (Tue, 17 Sep 2019)

  Changed paths:
    M runtime/gc/init-world.c

  Log Message:
  -----------
  Fixup whitespace


  Commit: 606fb853f208c97cb17034257914886dc59c9ed9
      https://github.com/MLton/mlton/commit/606fb853f208c97cb17034257914886dc59c9ed9
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-17 (Tue, 17 Sep 2019)

  Changed paths:
    M runtime/gc/init-world.c

  Log Message:
  -----------
  Ensure that `sizeofInitialBytesLive` returns a non-zero size

With b3873f1d8, a program can have an empty `objectInits[]` to be
allocated in the initial dynamic heap.  With an empty `objectInits[]`,
`sizeofInitialBytesLive` would return 0.  Attempting to create a heap
of zero bytes would fail (the specified SUSv3 behavior of `mmap`),
triggering a backoff computed as:

    highSize = newSize - s->sysvals.pageSize;
    newSize = align((factor-1) * (highSize / factor) + (lowSize / factor), s->sysvals.pageSize);

However, `newSize - s->sysval.pageSize` (with `newSize` equals 0),
wraps to nearly 2^64.  Successive backoffs eventually bring the
requested size down to one that can be satisfied, but the size is
generally much larger than required.  Moreover, the heap won't be
resized until a subsequent GC, which may not occur during the run of
the program, due to the heap being so large.  Many regression tests
run, but most that fork fail with `unhandled exception: SysErr: Cannot
allocate memory [nomem]`, because both the parent has allocated a very
large heap and the child is requesting to allocate a very large heap.

Now, `sizeofInitialBytesLive` also includes the size of the initial
thread/stack to be created, ensuring that it is always non-zero.


  Commit: 65c455f328ac6fa7f17d294188ba16b2faea16c3
      https://github.com/MLton/mlton/commit/65c455f328ac6fa7f17d294188ba16b2faea16c3
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-17 (Tue, 17 Sep 2019)

  Changed paths:
    M regression/size.sml

  Log Message:
  -----------
  Tweak `size.sml` regression to not use a static string


  Commit: 1e91cd9a289536563a02d5b2cbcb5fd5b6aae943
      https://github.com/MLton/mlton/commit/1e91cd9a289536563a02d5b2cbcb5fd5b6aae943
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-17 (Tue, 17 Sep 2019)

  Changed paths:
    M regression/mlton.share.sml

  Log Message:
  -----------
  Tweak `mlton.share.sml` regression to not use static strings/objects


  Commit: a9d897b839ea8bb7785342d641b570db8253eabe
      https://github.com/MLton/mlton/commit/a9d897b839ea8bb7785342d641b570db8253eabe
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-18 (Wed, 18 Sep 2019)

  Changed paths:
    M mlton/backend/ssa2-to-rssa.fun

  Log Message:
  -----------
  Treat `MLton_bogus` as a const for static alloc/init


  Commit: 10c407829ec7e7ef8a34651dbb6e4ccb0c63463d
      https://github.com/MLton/mlton/commit/10c407829ec7e7ef8a34651dbb6e4ccb0c63463d
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-18 (Wed, 18 Sep 2019)

  Changed paths:
    M mlton/backend/ssa2-to-rssa.fun

  Log Message:
  -----------
  Allow objects with no representation to be considered static

Objects without a representation (e.g., `unit`) may participate in the
construction of other objects (e.g., `unit ref`).

    (* Globals: *)
    val x_0: unit = obj ()
    ...
    val global_441: (unit mut) tuple = obj (x_0 (*obj ()*))

However, objects without a representation were not registered as being
static, thus preventing subsequent objects constructed with them from
being made static.


  Commit: 30252b58fae4e236332a2e2e6d3f397e7d380659
      https://github.com/MLton/mlton/commit/30252b58fae4e236332a2e2e6d3f397e7d380659
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-18 (Wed, 18 Sep 2019)

  Changed paths:
    M mlton/backend/ssa2-to-rssa.fun

  Log Message:
  -----------
  Refactor functions in `translateGlobalStatics`


  Commit: e47f7e02bfeb0363ecfa96e6fdb33dc026dd445c
      https://github.com/MLton/mlton/commit/e47f7e02bfeb0363ecfa96e6fdb33dc026dd445c
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-19 (Thu, 19 Sep 2019)

  Changed paths:
    M mlton/backend/ssa2-to-rssa.fun

  Log Message:
  -----------
  Recognize `Const.IntInf` and `Const.Null` as statics


  Commit: f39f8115fc5e39575ea340ec4207cdd60662167d
      https://github.com/MLton/mlton/commit/f39f8115fc5e39575ea340ec4207cdd60662167d
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-19 (Thu, 19 Sep 2019)

  Changed paths:
    M mlton/backend/ssa2-to-rssa.fun

  Log Message:
  -----------
  Recognize that `Array_toVector` preserves staticness


  Commit: bc389037c57b73c5e740e56362d53410c4f8ccc0
      https://github.com/MLton/mlton/commit/bc389037c57b73c5e740e56362d53410c4f8ccc0
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-09-19 (Thu, 19 Sep 2019)

  Changed paths:
    M mlton/backend/backend.fun

  Log Message:
  -----------
  Avoid constant propagating `Heap` statics in backend


  Commit: 57c9c94d419dbdbe900398ee08b5e129f0f480b4
      https://github.com/MLton/mlton/commit/57c9c94d419dbdbe900398ee08b5e129f0f480b4
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-09-19 (Thu, 19 Sep 2019)

  Changed paths:
    M include/amd64-main.h
    M include/c-chunk.h
    M include/c-main.h
    M include/common-main.h
    M include/x86-main.h
    M mlton/atoms/sources.cm
    M mlton/atoms/sources.mlb
    M mlton/backend/backend-atoms.fun
    M mlton/backend/backend-atoms.sig
    M mlton/backend/backend.fun
    M mlton/backend/bounce-vars.fun
    M mlton/backend/limit-check.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/backend/packed-representation.fun
    M mlton/backend/rep-type.fun
    M mlton/backend/representation.sig
    M mlton/backend/rssa-restore.fun
    M mlton/backend/rssa-tree.fun
    M mlton/backend/rssa-tree.sig
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb
    M mlton/backend/ssa2-to-rssa.fun
    A mlton/backend/static.fun
    A mlton/backend/static.sig
    M mlton/codegen/amd64-codegen/amd64-codegen.fun
    M mlton/codegen/amd64-codegen/amd64-mlton-basic.fun
    M mlton/codegen/amd64-codegen/amd64-mlton-basic.sig
    M mlton/codegen/amd64-codegen/amd64-translate.fun
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/codegen/llvm-codegen/llvm-codegen.fun
    M mlton/codegen/x86-codegen/x86-codegen.fun
    M mlton/codegen/x86-codegen/x86-mlton-basic.fun
    M mlton/codegen/x86-codegen/x86-mlton-basic.sig
    M mlton/codegen/x86-codegen/x86-translate.fun
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun
    M regression/mlton.share.sml
    M regression/size.sml
    M runtime/gc/cheney-copy.c
    M runtime/gc/dfs-mark.c
    M runtime/gc/forward.c
    M runtime/gc/forward.h
    M runtime/gc/gc_state.h
    M runtime/gc/heap.h
    M runtime/gc/heap_predicates.c
    M runtime/gc/init-world.c
    M runtime/gc/init-world.h
    M runtime/gc/invariant.c
    M runtime/gc/mark-compact.c
    M runtime/gc/translate.c
    M runtime/gc/translate.h

  Log Message:
  -----------
  Merge pull request #328 from jasoncarr0/static-alloc

Static allocation/initialization of objects in backend

The main benefits are that code size and compile time are improved
across the board, particularly for larger programs.  Runtime sometimes
improves, but should only affect programs which had hot code accessing
globals, as it removes one level of indirection.  Garbage collections
might be marginally faster, as globals are now mostly skipped.

Statically allocated and initialized objects are created in the main
`.c` file, where they will be placed in the data segment of the
executable:

    const struct {Word64 meta_0; Word64 meta_1; Word64 meta_2; Word8 data[9];}
    static_20 = {(Word64)(0x0ull), (Word64)(0x9ull), (Word64)(0x7ull), "addrinuse"};
    const struct {Word64 meta_0; Word32 data_0; Word32 data_1; Pointer data_2; }
    static_21 = {(Word64)(0x29ull), (Word32)(0x62ull), (Word32)(0x0ull), ((Pointer)(&static_20) + 24)};

Note that these are proper ML objects, with metadata and data.
References to statically allocated objects are via pointers to the
first data field (e.g., `&static20 + 24`).  Note also that
`WordXVector` (e.g., strings) are a special case of statically
allocated and initialized objects.  Statically allocated and
initialized objects can be both immutable and mutable, although the
latter should be restricted to objects with non-`Objptr` mutable
fields.

A special case of statically allocated objects are arrays, whose
contents will be dynamically initialized by the mutator.  These are
also created in the main `.c` file, but are placed in the bss segment
of the executable (decreasing the size of the executable) and proper
metadata is written by initialization code:

    struct {Word64 meta_0; Word64 meta_1; Word64 meta_2; Word8 data[800000];}
    static_26;
    struct {Word64 meta_0; Word64 meta_1; Word64 meta_2; Word8 data[0];}
    static_31;

    static void static_Init() {
        memcpy (&static_26, &((struct {Word64 meta_0; Word64 meta_1; Word64 meta_2}){(Word64)(0x0ull), (Word64)(0x186A0ull), (Word64)(0x11ull)}), 24);
        memcpy (&static_31, &((struct {Word64 meta_0; Word64 meta_1; Word64 meta_2}){(Word64)(0x0ull), (Word64)(0x0ull), (Word64)(0x13ull)}), 24);
    };

Finally, dynamically allocated but statically initialized objects have
their initialization data in the main `.c` file along with information
to copy that data to the initial dynamic heap during `initWorld`:

    const static struct {Word64 meta_0; Word64 data_0; }
    static_9819 = {(Word64)(0x79Dull), (Word64)(0x1ull)};
    const static struct {Word64 meta_0; Word64 data_0; }
    static_9820 = {(Word64)(0x79Dull), (Word64)(0x1ull)};

    static struct GC_objectInit objectInits[] = {
        { 11, 8, 16, ((Pointer) &static_9819) },
        { 12, 8, 16, ((Pointer) &static_9820) },
        ...
    }

By default (with `-static-init-objects staticAllocOnly`), no such
objects are created.

With `-static-init-objects all`, global objects with `Objptr` mutable
fields would be dynamically allocated but statically initialized.
But, such global objects are rare.  For example, a `(int * int) ref`
could be space-safely globalized and would be an object with a mutable
`Objptr` field.  However, it is also likely that such a tuple would be
`RefFlatten`ed.  With `-globalize-small-type 4` (see MLton/mlton#288
and 752467c48), an `(int * int, int * int) either ref` could be
globalized and represented as an object with a mutable `Objptr` field.
Similarly, an `IntInf.int ref` can also be globalized and would be
represented as an object with a mutable `Objptr` field.

With `-static-alloc-objects false -static-init-objects all`, all
global objects will be dynamically allocated but statically
initialized (and no global objects will be statically allocated).
Similarly, with `-static-alloc-wordvector-consts false`, string
constants will be dynamically allocated but statically initialized;
this corresponds to the previous MLton behavior with respect to string
constants.


A number of controls have been added to control static
allocation/initialization:

 * `-static-alloc-internal-ptrs {static|all|none}`

   Controls which kinds of objects can be statically allocated:
    * `static`: only objects with all fields either immutable or non-`Objptr`
    * `none`: only objects with no fields
    * `all`: all objects

   The `all` setting is incompatible with the current GC for two
   reasons.  First, statically allocated objects are not traced by the
   GC; a statically-allocated object that is updated with an `Objptr`
   to an object in the heap should be considered a root.  Second, a
   statically-allocated object that is updated with an `Objptr` would
   trigger a card marking, but the address of a statically-allocated
   object would not map to a valid card slot.

 * `-static-alloc-wordvector-consts {true|false}`

   Controls whether or not `WordXVector` constants are converted to
   statics (with `ImmStatic` location) at `Ssa2ToRssa`.

 * `-static-init-arrays {true|false}`

   Controls whether or not `Array_alloc` primitives are converted to
   statics (with `MutStatic` or `Heap` location) at `Ssa2ToRssa`.

 * `-static-alloc-arrays {true|false}`

   Controls whether or not `Array_alloc` primitives that can be
   statically initialized are forced to `Heap` location.

 * `-static-init-objects {none|staticAllocOnly|all}`

   Controls whether or not `Object` expressions are converted to
   statics at `Ssa2ToRssa`.  If `staticAllocOnly`, then an object that
   would be converted to a static with `Heap` location is not
   converted to a static.

 * `-static-alloc-objects {true|false}`

   Controls whether or not `Object` expressions that can be statically
   initialized are forced to `Heap` location.


Compare: https://github.com/MLton/mlton/compare/a1faf761bdb2...57c9c94d419d

[MLton-commit] [MLton/mlton] 0e6534: Output alias.scope and noalias metadata for all ob...

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: 0e65349759ec31fe877633b9f7f4c7ac955b4eed
      https://github.com/MLton/mlton/commit/0e65349759ec31fe877633b9f7f4c7ac955b4eed
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-06 (Thu, 06 Jun 2019)

  Changed paths:
    M mlton/backend/objptr-tycon.fun
    M mlton/backend/objptr-tycon.sig
    M mlton/codegen/llvm-codegen/llvm-codegen.fun

  Log Message:
  -----------
  Output alias.scope and noalias metadata for all objptr load/stores in llvm

Does not yet include metadata, so this version will not compile


  Commit: 37c69880870428a910ec73c9516cf54e965ae8d9
      https://github.com/MLton/mlton/commit/37c69880870428a910ec73c9516cf54e965ae8d9
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-06 (Thu, 06 Jun 2019)

  Changed paths:
    M mlton/codegen/llvm-codegen/llvm-codegen.fun

  Log Message:
  -----------
  Add all metadata for object types


  Commit: 9a556667f60098ac5b6110611df3dfa6dc0a5a0f
      https://github.com/MLton/mlton/commit/9a556667f60098ac5b6110611df3dfa6dc0a5a0f
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-06 (Thu, 06 Jun 2019)

  Changed paths:
    M mlton/codegen/llvm-codegen/llvm-codegen.fun

  Log Message:
  -----------
  Change comment on noalias sets to be more useful


  Commit: 548c304b2b1a98112138f66e4433dda8de165ab5
      https://github.com/MLton/mlton/commit/548c304b2b1a98112138f66e4433dda8de165ab5
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-06 (Thu, 06 Jun 2019)

  Changed paths:
    M mlton/backend/rep-type.fun
    M mlton/backend/rep-type.sig
    M mlton/codegen/llvm-codegen/llvm-codegen.fun

  Log Message:
  -----------
  Fix cherry-pick-related issues


  Commit: 255830f52b6b9ce0154fda5f7f83c5539198cd8a
      https://github.com/MLton/mlton/commit/255830f52b6b9ce0154fda5f7f83c5539198cd8a
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-09 (Sun, 09 Jun 2019)

  Changed paths:
    M mlton/codegen/llvm-codegen/llvm-codegen.fun

  Log Message:
  -----------
  Try progressing on tbaa


  Commit: a6e2224bb84f48902c4cef76e3791f48ae4d3886
      https://github.com/MLton/mlton/commit/a6e2224bb84f48902c4cef76e3791f48ae4d3886
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-21 (Fri, 21 Jun 2019)

  Changed paths:
    M mlton/codegen/llvm-codegen/llvm-codegen.fun

  Log Message:
  -----------
  Change to only including operand scoping based on location


  Commit: 783bc3fdaedad357d110df66ae832dda4d48e00a
      https://github.com/MLton/mlton/commit/783bc3fdaedad357d110df66ae832dda4d48e00a
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-21 (Fri, 21 Jun 2019)

  Changed paths:
    M CHANGELOG.adoc
    M LICENSE
    M Makefile
    A Makefile.config
    M README.adoc
    M basis-library/Makefile
    M basis-library/mlton/call-stack.sml
    M basis-library/mlton/cont.sml
    M basis-library/mlton/exit.sml
    M basis-library/mlton/gc.sml
    M basis-library/mlton/profile.sml
    M basis-library/mlton/rusage.sml
    M basis-library/mlton/signal.sml
    M basis-library/mlton/thread.sml
    M basis-library/mlton/world.sml
    M basis-library/primitive/basis-ffi.sml
    M basis-library/primitive/prim-mlton.sml
    M basis-library/primitive/prim2.sml
    M benchmark/Makefile
    M bin/mlton-script
    M include/amd64-main.h
    M include/c-chunk.h
    M include/c-common.h
    M include/c-main.h
    M include/common-main.h
    M include/x86-main.h
    M lib/mlton/basic/directed-graph.sig
    M lib/mlton/basic/directed-graph.sml
    M lib/mlton/basic/hash-table.sig
    M lib/mlton/basic/hash-table.sml
    M lib/mlton/basic/hash.sig
    M lib/mlton/basic/hash.sml
    M lib/mlton/basic/vector.sig
    A lib/mlton/lattice/flat-lattice.fun
    A lib/mlton/lattice/flat-lattice.sig
    A lib/mlton/lattice/n-point-lattice.fun
    A lib/mlton/lattice/n-point-lattice.sig
    A lib/mlton/lattice/powerset-lattice.fun
    A lib/mlton/lattice/powerset-lattice.sig
    A lib/mlton/lattice/sources.cm
    A lib/mlton/lattice/sources.mlb
    A lib/mlton/lattice/three-point-lattice.fun
    A lib/mlton/lattice/three-point-lattice.sig
    A lib/mlton/lattice/two-point-lattice.fun
    A lib/mlton/lattice/two-point-lattice.sig
    M lib/mlton/sources.cm
    M lib/mlton/sources.mlb
    M mllex/Makefile
    M mlnlffigen/Makefile
    M mlprof/Makefile
    M mlton/.gitignore
    M mlton/Makefile
    M mlton/atoms/atoms.fun
    M mlton/atoms/atoms.sig
    M mlton/atoms/c-function.fun
    M mlton/atoms/c-function.sig
    M mlton/atoms/cases.fun
    M mlton/atoms/cases.sig
    M mlton/atoms/ffi.fun
    M mlton/atoms/ffi.sig
    A mlton/atoms/handler.fun
    A mlton/atoms/handler.sig
    M mlton/atoms/prim.fun
    M mlton/atoms/prim.sig
    M mlton/atoms/profile-label.fun
    M mlton/atoms/profile-label.sig
    A mlton/atoms/return.fun
    A mlton/atoms/return.sig
    A mlton/atoms/source-maps.fun
    A mlton/atoms/source-maps.sig
    M mlton/atoms/sources.cm
    M mlton/atoms/sources.mlb
    M mlton/backend/allocate-registers.fun
    M mlton/backend/allocate-registers.sig
    A mlton/backend/backend-atoms.fun
    A mlton/backend/backend-atoms.sig
    M mlton/backend/backend.fun
    M mlton/backend/backend.sig
    A mlton/backend/bounce-vars.fun
    M mlton/backend/chunkify.fun
    M mlton/backend/chunkify.sig
    M mlton/backend/equivalence-graph.fun
    M mlton/backend/implement-handlers.fun
    M mlton/backend/implement-profiling.fun
    R mlton/backend/implement-profiling.sig
    M mlton/backend/limit-check.fun
    R mlton/backend/live.fun
    R mlton/backend/live.sig
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/backend/packed-representation.fun
    M mlton/backend/rep-type.fun
    M mlton/backend/rep-type.sig
    M mlton/backend/representation.sig
    A mlton/backend/rssa-live.fun
    A mlton/backend/rssa-live.sig
    A mlton/backend/rssa-restore.fun
    A mlton/backend/rssa-restore.sig
    A mlton/backend/rssa-simplify.fun
    A mlton/backend/rssa-simplify.sig
    M mlton/backend/rssa-transform.sig
    A mlton/backend/rssa-tree.fun
    A mlton/backend/rssa-tree.sig
    M mlton/backend/rssa.fun
    M mlton/backend/rssa.sig
    M mlton/backend/runtime.fun
    M mlton/backend/runtime.sig
    R mlton/backend/scale.fun
    R mlton/backend/scale.sig
    M mlton/backend/signal-check.fun
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb
    R mlton/backend/ssa-to-rssa.fun
    R mlton/backend/ssa-to-rssa.sig
    A mlton/backend/ssa2-to-rssa.fun
    A mlton/backend/ssa2-to-rssa.sig
    M mlton/codegen/amd64-codegen/amd64-codegen.fun
    M mlton/codegen/amd64-codegen/amd64-entry-transfer.fun
    M mlton/codegen/amd64-codegen/amd64-generate-transfers.fun
    M mlton/codegen/amd64-codegen/amd64-jump-info.fun
    M mlton/codegen/amd64-codegen/amd64-live-transfers.fun
    M mlton/codegen/amd64-codegen/amd64-loop-info.fun
    M mlton/codegen/amd64-codegen/amd64-mlton-basic.fun
    M mlton/codegen/amd64-codegen/amd64-mlton-basic.sig
    M mlton/codegen/amd64-codegen/amd64-mlton.fun
    M mlton/codegen/amd64-codegen/amd64-mlton.sig
    M mlton/codegen/amd64-codegen/amd64-pseudo.sig
    M mlton/codegen/amd64-codegen/amd64-translate.fun
    M mlton/codegen/amd64-codegen/amd64-translate.sig
    M mlton/codegen/amd64-codegen/amd64.fun
    M mlton/codegen/amd64-codegen/amd64.sig
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/codegen/c-codegen/c-codegen.sig
    M mlton/codegen/llvm-codegen/llvm-codegen.fun
    M mlton/codegen/x86-codegen/x86-codegen.fun
    M mlton/codegen/x86-codegen/x86-entry-transfer.fun
    M mlton/codegen/x86-codegen/x86-generate-transfers.fun
    M mlton/codegen/x86-codegen/x86-jump-info.fun
    M mlton/codegen/x86-codegen/x86-live-transfers.fun
    M mlton/codegen/x86-codegen/x86-loop-info.fun
    M mlton/codegen/x86-codegen/x86-mlton-basic.fun
    M mlton/codegen/x86-codegen/x86-mlton-basic.sig
    M mlton/codegen/x86-codegen/x86-mlton.fun
    M mlton/codegen/x86-codegen/x86-mlton.sig
    M mlton/codegen/x86-codegen/x86-pseudo.sig
    M mlton/codegen/x86-codegen/x86-translate.fun
    M mlton/codegen/x86-codegen/x86-translate.sig
    M mlton/codegen/x86-codegen/x86.fun
    M mlton/codegen/x86-codegen/x86.sig
    M mlton/control/bits.sml
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/control/control.sig
    M mlton/control/control.sml
    A mlton/control/scale.sml
    M mlton/control/sources.cm
    M mlton/control/sources.mlb
    M mlton/control/version_sml.src
    M mlton/core-ml/core-ml.fun
    M mlton/core-ml/core-ml.sig
    M mlton/defunctorize/defunctorize.fun
    M mlton/elaborate/elaborate-env.fun
    M mlton/elaborate/elaborate-env.sig
    M mlton/elaborate/elaborate-modules.fun
    R mlton/front-end/Makefile
    M mlton/main/compile.fun
    M mlton/main/compile.sig
    M mlton/main/lookup-constant.fun
    M mlton/main/main.fun
    M mlton/match-compile/match-compile.fun
    M mlton/match-compile/match-compile.sig
    M mlton/ssa/direct-exp.fun
    R mlton/ssa/flat-lattice.fun
    R mlton/ssa/flat-lattice.sig
    M mlton/ssa/loop-unroll.fun
    M mlton/ssa/loop-unswitch.fun
    R mlton/ssa/n-point-lattice.fun
    R mlton/ssa/n-point-lattice.sig
    M mlton/ssa/shrink.fun
    M mlton/ssa/shrink2.fun
    M mlton/ssa/simplify.fun
    M mlton/ssa/simplify2.fun
    M mlton/ssa/sources.cm
    M mlton/ssa/sources.mlb
    M mlton/ssa/ssa-to-ssa2.fun
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree.sig
    M mlton/ssa/ssa-tree2.fun
    M mlton/ssa/ssa-tree2.sig
    R mlton/ssa/three-point-lattice.fun
    R mlton/ssa/three-point-lattice.sig
    R mlton/ssa/two-point-lattice.fun
    R mlton/ssa/two-point-lattice.sig
    M mlton/ssa/type-check.fun
    M mlton/ssa/type-check2.fun
    M mlton/xml/polyvariance.fun
    M mlton/xml/shrink.fun
    M mlton/xml/sxml-simplify.fun
    M mlton/xml/sxml.fun
    M mlton/xml/type-check.fun
    M mlton/xml/xml-simplify.fun
    M mlton/xml/xml-tree.fun
    M mlton/xml/xml-tree.sig
    M mlyacc/Makefile
    M package/debian/rules
    M runtime/Makefile
    M runtime/basis-ffi.h
    M runtime/basis/MLton/Rusage/rusage.c
    M runtime/basis/Posix/Process/fork.c
    M runtime/basis/Posix/Signal.c
    R runtime/basis/Real/Math-fns.h
    R runtime/basis/Real/Math.c
    M runtime/basis/Real/Real-ops.h
    M runtime/gc.h
    M runtime/gc/call-stack.c
    M runtime/gc/dfs-mark.c
    M runtime/gc/foreach.c
    M runtime/gc/frame.c
    M runtime/gc/frame.h
    M runtime/gc/gc_state.c
    M runtime/gc/gc_state.h
    M runtime/gc/handler.c
    M runtime/gc/handler.h
    M runtime/gc/init.c
    M runtime/gc/invariant.c
    M runtime/gc/profiling.c
    M runtime/gc/profiling.h
    M runtime/gc/signals.c
    M runtime/gc/signals.h
    M runtime/gc/sources.c
    M runtime/gc/sources.h
    M runtime/gc/stack.c
    M runtime/gc/stack.h
    M runtime/gen/basis-ffi.def
    M runtime/gen/basis-ffi.h
    M runtime/gen/basis-ffi.sml
    M runtime/platform.h

  Log Message:
  -----------
  Merge branch 'master' into llvm-location-aliasing


  Commit: 19fb54865751866158bb26ac2301d605a5500781
      https://github.com/MLton/mlton/commit/19fb54865751866158bb26ac2301d605a5500781
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-21 (Fri, 21 Jun 2019)

  Changed paths:
    M mlton/codegen/llvm-codegen/llvm-codegen.fun

  Log Message:
  -----------
  Add missing metadata from bad merge


  Commit: a4f9ef577e404d13c4589606680af104e43841b6
      https://github.com/MLton/mlton/commit/a4f9ef577e404d13c4589606680af104e43841b6
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-21 (Fri, 21 Jun 2019)

  Changed paths:
    M mlton/codegen/llvm-codegen/llvm-codegen.fun

  Log Message:
  -----------
  Change aliasing information to not include offsets, only stack/heap/sequence

Giving too much information causes unbearable slowdown in llvm, as
the representation has n^2 size.
There may be unforeseen correctness issues with aliasing.


  Commit: daa98a4d0918034fdf82accafb3df2f7302f3e95
      https://github.com/MLton/mlton/commit/daa98a4d0918034fdf82accafb3df2f7302f3e95
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-23 (Sun, 23 Jun 2019)

  Changed paths:
    M mlton/codegen/llvm-codegen/llvm-codegen.fun

  Log Message:
  -----------
  Clean up unused portions of llvm-codegen


  Commit: fb9a449518d3f7bc4aebc6bcd7d69e55ff18f658
      https://github.com/MLton/mlton/commit/fb9a449518d3f7bc4aebc6bcd7d69e55ff18f658
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-25 (Tue, 25 Jun 2019)

  Changed paths:
    M mlton/codegen/llvm-codegen/llvm-codegen.fun

  Log Message:
  -----------
  Use tbaa instead of alias.scope and return to detailed information


  Commit: ab7e2165e792eb9979ea971210fb3232b6867d33
      https://github.com/MLton/mlton/commit/ab7e2165e792eb9979ea971210fb3232b6867d33
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-26 (Wed, 26 Jun 2019)

  Changed paths:
    M mlton/codegen/llvm-codegen/llvm-codegen.fun

  Log Message:
  -----------
  Check base type for Offset/SequenceOffset


  Commit: b2054be4cca2012764d04694e8d5a14c9c0106cf
      https://github.com/MLton/mlton/commit/b2054be4cca2012764d04694e8d5a14c9c0106cf
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-03 (Wed, 03 Jul 2019)

  Changed paths:
    R doc/guide/src/AllocateRegisters.adoc
    A doc/guide/src/AllocateVariables.adoc
    M doc/guide/src/CommonArg.adoc
    M doc/guide/src/IntermediateLanguage.adoc
    M doc/guide/src/Machine.adoc
    M doc/guide/src/ToMachine.adoc
    M lib/mlton/basic/parse.sig
    M lib/mlton/basic/parse.sml
    M mlton/atoms/id.fun
    R mlton/backend/allocate-registers.fun
    R mlton/backend/allocate-registers.sig
    A mlton/backend/allocate-variables.fun
    A mlton/backend/allocate-variables.sig
    M mlton/backend/backend.fun
    M mlton/backend/bounce-vars.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/backend/parallel-move.fun
    M mlton/backend/parallel-move.sig
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb
    M mlton/codegen/amd64-codegen/amd64-codegen.fun
    M mlton/codegen/amd64-codegen/amd64-translate.fun
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/codegen/llvm-codegen/llvm-codegen.fun
    M mlton/codegen/x86-codegen/x86-codegen.fun
    M mlton/codegen/x86-codegen/x86-translate.fun
    M mlton/main/compile.fun
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree2.fun
    M mlton/xml/xml-tree.fun

  Log Message:
  -----------
  Merge 'master' into llvm-location-aliasing


  Commit: 8137a9207ca23d3302cc7d488f3af593469b29d5
      https://github.com/MLton/mlton/commit/8137a9207ca23d3302cc7d488f3af593469b29d5
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-05 (Fri, 05 Jul 2019)

  Changed paths:
    M mlton/codegen/llvm-codegen/llvm-codegen.fun
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun

  Log Message:
  -----------
  Add flag to control whether to include llvm aliasing information


  Commit: 357a284408c4925e9bbda8e31e04cb1d9ecf7361
      https://github.com/MLton/mlton/commit/357a284408c4925e9bbda8e31e04cb1d9ecf7361
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-08 (Mon, 08 Jul 2019)

  Changed paths:
    M mlton/codegen/llvm-codegen/llvm-codegen.fun
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun

  Log Message:
  -----------
  includeLLVMAlisingInfo -> llvmIncludeAliasingInfo


  Commit: 95e8e376a187c9e1755f5329887034e51ad977ad
      https://github.com/MLton/mlton/commit/95e8e376a187c9e1755f5329887034e51ad977ad
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-11 (Thu, 11 Jul 2019)

  Changed paths:
    M mlton/atoms/real-size.fun
    M mlton/atoms/real-size.sig
    M mlton/atoms/word-size.fun
    M mlton/atoms/word-size.sig
    M mlton/backend/rep-type.fun
    M mlton/backend/rep-type.sig
    M mlton/control/bits.sml

  Log Message:
  -----------
  Add {RepType,WordSize,RealSize,Bits}.hash


  Commit: f9119debbddbd7fb175d8a4aa0194cf4748cf623
      https://github.com/MLton/mlton/commit/f9119debbddbd7fb175d8a4aa0194cf4748cf623
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-07-17 (Wed, 17 Jul 2019)

  Changed paths:
    M mlton/backend/rep-type.fun

  Log Message:
  -----------
  Quell unused variable warning


  Commit: 2911bd1f594b2436643ebfcefc62e7aec0c05935
      https://github.com/MLton/mlton/commit/2911bd1f594b2436643ebfcefc62e7aec0c05935
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-07-17 (Wed, 17 Jul 2019)

  Changed paths:
    M mlton/codegen/llvm-codegen/llvm-codegen.fun

  Log Message:
  -----------
  Quell unused variable warning


  Commit: c6aba7e6a7f9adabbb5cb79307f49580611b49bd
      https://github.com/MLton/mlton/commit/c6aba7e6a7f9adabbb5cb79307f49580611b49bd
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-07-17 (Wed, 17 Jul 2019)

  Changed paths:
    M mlton/backend/machine.fun

  Log Message:
  -----------
  Refactor `Machine.Statement.object`

Change the object allocation sequence from

    CW(Frontier) = header;
    dst = Frontier + NORMAL_METADATA_SIZE;
    Frontier += size;

to

   dst = Frontier + NORMAL_METADATA_SIZE;
   OW(dst, ~GC_HEADER_SIZE) = header;
   Frontier += size;

This ensures that the write to the heap is through an `Offset` operand
with an `Objptr` base, so that the LLVM tbaa will treat the store as
one into the heap.


  Commit: b787e91020c7798e20acdbc2f44dc86bd82c83ea
      https://github.com/MLton/mlton/commit/b787e91020c7798e20acdbc2f44dc86bd82c83ea
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-07-17 (Wed, 17 Jul 2019)

  Changed paths:
    M mlton/codegen/llvm-codegen/llvm-codegen.fun

  Log Message:
  -----------
  Use `String.concatWith` for `LLVM.MetaData.defineNode`


  Commit: 1252d6f33eb9e07e2800ebb05eeef0cb27660cb6
      https://github.com/MLton/mlton/commit/1252d6f33eb9e07e2800ebb05eeef0cb27660cb6
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-07-18 (Thu, 18 Jul 2019)

  Changed paths:
    M mlton/codegen/llvm-codegen/llvm-codegen.fun
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun

  Log Message:
  -----------
  Change `-llvm-include-aliasing-info {true|false}` to `-llvm-aamd {tbaa|none}`


  Commit: 96cb3c82b9d7bdc52a47a13533fa7369aae4d080
      https://github.com/MLton/mlton/commit/96cb3c82b9d7bdc52a47a13533fa7369aae4d080
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-07-18 (Thu, 18 Jul 2019)

  Changed paths:
    M mlton/codegen/llvm-codegen/llvm-codegen.fun

  Log Message:
  -----------
  Omit emitting any tbaa metadata with `-llvm-aamd none`


  Commit: 44b63d0793151fd491531f9b4381df8234e5ed81
      https://github.com/MLton/mlton/commit/44b63d0793151fd491531f9b4381df8234e5ed81
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-07-18 (Thu, 18 Jul 2019)

  Changed paths:
    M mlton/control/control-flags.sml
    M mlton/main/main.fun

  Log Message:
  -----------
  Change `-llvm-aamd` default from `tbaa` to `none`


  Commit: 596737e342cfcd7da36a6e9d7fda5053aba41745
      https://github.com/MLton/mlton/commit/596737e342cfcd7da36a6e9d7fda5053aba41745
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-07-18 (Thu, 18 Jul 2019)

  Changed paths:
    M mlton/codegen/llvm-codegen/llvm-codegen.fun

  Log Message:
  -----------
  Tweak formatting of generated .ll file with tbaa metadata


  Commit: a1faf761bdb211a81b0f6a95f5a749698b6891fa
      https://github.com/MLton/mlton/commit/a1faf761bdb211a81b0f6a95f5a749698b6891fa
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-07-18 (Thu, 18 Jul 2019)

  Changed paths:
    M mlton/atoms/real-size.fun
    M mlton/atoms/real-size.sig
    M mlton/atoms/word-size.fun
    M mlton/atoms/word-size.sig
    M mlton/backend/machine.fun
    M mlton/backend/objptr-tycon.fun
    M mlton/backend/objptr-tycon.sig
    M mlton/backend/rep-type.fun
    M mlton/backend/rep-type.sig
    M mlton/codegen/llvm-codegen/llvm-codegen.fun
    M mlton/control/bits.sml
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun

  Log Message:
  -----------
  Merge pull request #324 from jasoncarr0/llvm-location-aliasing

LLVM alias analysis metadata

Add `-llvm-aamd {none|tbaa}` to control including alias-analysis
metadata when compiling with LLVM.  The `tbaa` option uses LLVM's
type-based alias analysis metadata (which, while named "type-based",
suffices to encode any hierarchical aliasing information).

Unfortunately, there doesn't seem to be significant run-time
performance improvements due to the aliasing information and there is
some small compile-time performance penalty.

Some notes for future improvements to the alias-analysis metadada:

* The `{X86,AMD64}.MemLoc.Class.t` is used by the native codegens for
  (very rudimentary) may-alias analysis, where distinct classes are
  assumed to be disjoint.  It uses `Heap`, `Stack`, `Locals` (for
  `Operand.Register`), `Globals`, and `GCState`.

* According to the LLVM language reference, TBAA metadata should be an
  access tag, which references a type descriptor, but the TBAA
  metadata emitted by the LLVM codegen is just the type descriptor.
  That is, rather than

      %x = load i64, i64* %p, !tbaa !1

      !0 = !{!"operRoot"}
      !1 = !{!"Stack 8", !0, i64 0}

  it should be

      %x = load i64, i64* %p, !tbaa !2

      !0 = !{!"operRoot"}
      !1 = !{!"Stack 8", !0}
      !2 = !{!1, !1, i64 0}

  However, LLVM `opt` seems to recognize the former and translate it
  to the later.

* The cost/benefit of including indices in the alias domains has not
  been fully investigated/justified.  For example, rather than

      datatype t = Stack of int
                 | Offset of int
                 | SequenceOffset
                 | Other

  the simpler

      datatype t = Heap | Stack | Other

  or, the more sophisticated

      datatype t = Object of ObjptrTycon.t option * int
                 | Stack of int
                 | Other

  There is one known complication with using `ObjptrTycon.t` for
  greater precision: a sequence may be accessed at two distinct
  `ObjptrTycon.t`s, once as an `array` and then as a `vector`, due to
  `Array_toVector`.  However, such `ObjptrTycon.t`s would only differ
  in the `hasIdentity` component of their `OBJECT_TYPE.Sequence`, so
  it might suffice to map the two such corresponding `ObjptrTycon.t`s
  to a canonical representative for the purposes of assigning an
  aliasing domain.

* There is a slight unsoundness with exception raising.  With
  MLton/mlton#321, we now raise exception values via the ML stack.
  The key interaction with respect to aliasing information is at:
    https://github.com/MLton/mlton/pull/321/files#diff-bb88a6ee07c8d914cad73fe2a7bdee26R850
  Essentially, we compute the new stack top in a temporary, then write
  via that temporary with an `Operand.Offset`, then (in the codegen
  implementation of `Machine.Transfer.Raise`), set the new stack top.
  So, this is a situation where we use `Operand.Offset` of a `CPointer`,
  but are actually writing to the ML stack.  One possible "fix" might be
  to change

      | Stack of StackOffset.t

  to

      | Stack of {base: t option, offset: StackOffset.t}

  or even

      | Stack of {base: t, offset: StackOffset.t}

  Most of the time, `base` would be `NONE` or `StackTop`, but for the
  exception raising, we would use the temporary operand.  In either
  case, we would know that the aliasing scope of a Stack operand was
  Stack.


Compare: https://github.com/MLton/mlton/compare/4ea4dc6b61aa...a1faf761bdb2

[MLton-commit] [MLton/mlton] 7fda30: Add Counter.generator for simple cases, and use Co...

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: 7fda3058cf023e9a075b8f55fabd4b03c7fcfd8f
      https://github.com/MLton/mlton/commit/7fda3058cf023e9a075b8f55fabd4b03c7fcfd8f
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-10 (Wed, 10 Jul 2019)

  Changed paths:
    M benchmark/main.sml
    M lib/mlton/basic/counter.sig
    M lib/mlton/basic/counter.sml
    M lib/mlton/basic/directed-graph.sml
    M lib/mlton/basic/directed-sub-graph.sml
    M lib/mlton/basic/regexp.sml
    M mlton/atoms/c-function.fun
    M mlton/atoms/ffi.fun
    M mlton/atoms/id.fun
    M mlton/atoms/profile-label.fun
    M mlton/backend/backend.fun
    M mlton/backend/implement-profiling.fun
    M mlton/backend/objptr-tycon.fun
    M mlton/backend/rssa-restore.fun
    M mlton/codegen/amd64-codegen/amd64-liveness.fun
    M mlton/codegen/amd64-codegen/amd64.fun
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/codegen/llvm-codegen/llvm-codegen.fun
    M mlton/codegen/x86-codegen/x86-liveness.fun
    M mlton/codegen/x86-codegen/x86.fun
    M mlton/elaborate/elaborate-env.fun
    M mlton/elaborate/type-env.fun
    M mlton/main/main.fun
    M mlton/ssa/common-subexp.fun
    M mlton/ssa/restore.fun
    M mlton/ssa/restore2.fun
    M mlton/ssa/simplify.fun
    M mlton/ssa/simplify2.fun
    M mlton/xml/sxml-simplify.fun
    M mlton/xml/xml-simplify.fun

  Log Message:
  -----------
  Add Counter.generator for simple cases, and use Counter more often in code


  Commit: 8b5960b8d0605e73d34a635dbcbd8d0ec6d20b3f
      https://github.com/MLton/mlton/commit/8b5960b8d0605e73d34a635dbcbd8d0ec6d20b3f
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-10 (Wed, 10 Jul 2019)

  Changed paths:
    M lib/mlton/basic/hash-table.sig
    M lib/mlton/basic/hash-table.sml
    M lib/mlton/basic/string.sml
    M mlton/atoms/ffi.fun
    M mlton/atoms/id.fun
    M mlton/atoms/prim.fun
    M mlton/backend/backend.fun
    M mlton/backend/ssa2-to-rssa.fun
    M mlton/codegen/x86-codegen/x86-generate-transfers.fun
    M mlton/elaborate/elaborate-mlbs.fun
    M mlton/front-end/mlb-front-end.fun
    M mlton/main/lookup-constant.fun
    M mlton/ssa/loop-unroll.fun
    M mlton/xml/monomorphise.fun

  Log Message:
  -----------
  Expand hash-table and use in more places


  Commit: ff6a758b91e72834e4dec903199989ade2d3a9f8
      https://github.com/MLton/mlton/commit/ff6a758b91e72834e4dec903199989ade2d3a9f8
  Author: Jason Carr <jca...@gm...>
  Date:   2019-07-10 (Wed, 10 Jul 2019)

  Changed paths:
    M mlton/ssa/loop-unroll.fun

  Log Message:
  -----------
  Use Counters in ssa/loop-unroll.fun


  Commit: c29ce8672ee828e08b64908358a8ae3adde13735
      https://github.com/MLton/mlton/commit/c29ce8672ee828e08b64908358a8ae3adde13735
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-07-11 (Thu, 11 Jul 2019)

  Changed paths:
    M mlton/atoms/source-info.fun

  Log Message:
  -----------
  Use `HashTable.t` rather than `HashSet.t`


  Commit: a345199bf631a4df4e55b5528eba339358c93079
      https://github.com/MLton/mlton/commit/a345199bf631a4df4e55b5528eba339358c93079
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-07-11 (Thu, 11 Jul 2019)

  Changed paths:
    M mlton/atoms/symbol.fun
    M mlton/atoms/symbol.sig

  Log Message:
  -----------
  Use `HashTable.t` rather than `HashSet.t`


  Commit: 5129f2918cff1a5d78257a74c4a4f0816d8f9498
      https://github.com/MLton/mlton/commit/5129f2918cff1a5d78257a74c4a4f0816d8f9498
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-07-12 (Fri, 12 Jul 2019)

  Changed paths:
    M mlton/ssa/global.fun
    M mlton/ssa/restore.fun
    M mlton/ssa/restore2.fun

  Log Message:
  -----------
  Use `HashTable.t` rather than `HashSet.t`


  Commit: 080c04a218cf11f806c3dbf07f0da09dbc9b4073
      https://github.com/MLton/mlton/commit/080c04a218cf11f806c3dbf07f0da09dbc9b4073
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-07-12 (Fri, 12 Jul 2019)

  Changed paths:
    M mlton/ssa/type-check.fun
    M mlton/ssa/type-check2.fun

  Log Message:
  -----------
  Use `HashTable.t` rather than `HashSet.t`


  Commit: fd5b40b73894274ddfa89335dc6598238a7a5399
      https://github.com/MLton/mlton/commit/fd5b40b73894274ddfa89335dc6598238a7a5399
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-07-12 (Fri, 12 Jul 2019)

  Changed paths:
    M mlton/ssa/duplicate-globals.fun

  Log Message:
  -----------
  Use `HashTable.t` rather than `HashSet.t`


  Commit: 2a169dab97c1c402ad154f224836ed5660be1910
      https://github.com/MLton/mlton/commit/2a169dab97c1c402ad154f224836ed5660be1910
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-07-12 (Fri, 12 Jul 2019)

  Changed paths:
    M mlton/backend/implement-profiling.fun
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Use more descriptive variable names

One downside of replacing

   val c = Counter.new 0

   ... Counter.next c ...

with

   val c = Counter.generator 0

   ... c () ...

is that former is more clear that a counter is being incremented.

When the `val c = Counter.generator 0` and the `c ()` are relatively
close together, then it is may not be difficult to understand the
meaning of the `c ()`.  But, when they are far apart, it can be
difficult to understand the meaning of `c ()`.  One way to mitigate is
to choose better variable names:

  val nextThing = Counter.generator 0

  ... nextThing () ...


  Commit: 7c4f61fb501c3276016457a5f856d00e0f38f905
      https://github.com/MLton/mlton/commit/7c4f61fb501c3276016457a5f856d00e0f38f905
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-07-12 (Fri, 12 Jul 2019)

  Changed paths:
    M mlton/atoms/id.fun

  Log Message:
  -----------
  Revert to using `Counter.t`, rather than `unit -> int`


  Commit: 4ea4dc6b61aac03d12043d796ba6e86945af6dbf
      https://github.com/MLton/mlton/commit/4ea4dc6b61aac03d12043d796ba6e86945af6dbf
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-07-12 (Fri, 12 Jul 2019)

  Changed paths:
    M benchmark/main.sml
    M lib/mlton/basic/counter.sig
    M lib/mlton/basic/counter.sml
    M lib/mlton/basic/directed-graph.sml
    M lib/mlton/basic/directed-sub-graph.sml
    M lib/mlton/basic/hash-table.sig
    M lib/mlton/basic/hash-table.sml
    M lib/mlton/basic/regexp.sml
    M lib/mlton/basic/string.sml
    M mlton/atoms/c-function.fun
    M mlton/atoms/ffi.fun
    M mlton/atoms/id.fun
    M mlton/atoms/prim.fun
    M mlton/atoms/profile-label.fun
    M mlton/atoms/source-info.fun
    M mlton/atoms/symbol.fun
    M mlton/atoms/symbol.sig
    M mlton/backend/backend.fun
    M mlton/backend/implement-profiling.fun
    M mlton/backend/objptr-tycon.fun
    M mlton/backend/rssa-restore.fun
    M mlton/backend/ssa2-to-rssa.fun
    M mlton/codegen/amd64-codegen/amd64-liveness.fun
    M mlton/codegen/amd64-codegen/amd64.fun
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/codegen/llvm-codegen/llvm-codegen.fun
    M mlton/codegen/x86-codegen/x86-generate-transfers.fun
    M mlton/codegen/x86-codegen/x86-liveness.fun
    M mlton/codegen/x86-codegen/x86.fun
    M mlton/elaborate/elaborate-env.fun
    M mlton/elaborate/elaborate-mlbs.fun
    M mlton/elaborate/type-env.fun
    M mlton/front-end/mlb-front-end.fun
    M mlton/main/lookup-constant.fun
    M mlton/main/main.fun
    M mlton/ssa/common-subexp.fun
    M mlton/ssa/duplicate-globals.fun
    M mlton/ssa/global.fun
    M mlton/ssa/loop-unroll.fun
    M mlton/ssa/restore.fun
    M mlton/ssa/restore2.fun
    M mlton/ssa/simplify.fun
    M mlton/ssa/simplify2.fun
    M mlton/ssa/type-check.fun
    M mlton/ssa/type-check2.fun
    M mlton/xml/monomorphise.fun
    M mlton/xml/sxml-simplify.fun
    M mlton/xml/xml-simplify.fun

  Log Message:
  -----------
  Merge pull request #327 from jasoncarr0/sw-engineering

Add `val Counter.generator: int -> (unit -> int)` for the common case
of needing a unique value generator without `reset` and/or `peek`.

Replace several uses of `Counter.new`/`Counter.next` with
`Counter.generator`.

Replace some uses of `int ref`s with `Counter.new` or
`Counter.generator`.

Replace some uses of `HashSet.t` with `HashTable.t`.


Compare: https://github.com/MLton/mlton/compare/18e460af5879...4ea4dc6b61aa

[MLton-commit] [MLton/mlton] 773156: Rename Register -> Temporary (and similar) in mach...

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: 7731566937305b9bd5d6009b23ed74f84a827c48
      https://github.com/MLton/mlton/commit/7731566937305b9bd5d6009b23ed74f84a827c48
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-21 (Fri, 21 Jun 2019)

  Changed paths:
    M mlton/backend/allocate-registers.fun
    M mlton/backend/backend.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/codegen/amd64-codegen/amd64-codegen.fun
    M mlton/codegen/amd64-codegen/amd64-translate.fun
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/codegen/llvm-codegen/llvm-codegen.fun
    M mlton/codegen/x86-codegen/x86-codegen.fun
    M mlton/codegen/x86-codegen/x86-translate.fun

  Log Message:
  -----------
  Rename Register -> Temporary (and similar) in machine.fun and codegens


  Commit: 3cd378abbb725adaa9e4f4f1a846ab1313415e8d
      https://github.com/MLton/mlton/commit/3cd378abbb725adaa9e4f4f1a846ab1313415e8d
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-21 (Fri, 21 Jun 2019)

  Changed paths:
    R mlton/backend/allocate-registers.fun
    R mlton/backend/allocate-registers.sig
    A mlton/backend/allocate-variables.fun
    A mlton/backend/allocate-variables.sig
    M mlton/backend/backend.fun
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb

  Log Message:
  -----------
  Change AllocateRegisters to AllocateVariables

Since there are an infinite number of temporaries and stack slots,
and we use only a simple greedy algorithm for this,
the name AllocateRegisters (resp. AllocateTemporaries) is a bit
of a misnomer. Rather than assign each temporary or stack slot
to a variable, we assign to each variable a stack slot or temporary
with no limit to the amount available.


  Commit: 6b83dc1d7bfcbcac9d62a1868a1ec53950408891
      https://github.com/MLton/mlton/commit/6b83dc1d7bfcbcac9d62a1868a1ec53950408891
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-21 (Fri, 21 Jun 2019)

  Changed paths:
    M mlton/backend/allocate-variables.fun
    M mlton/backend/allocate-variables.sig
    M mlton/backend/backend.fun
    M mlton/backend/bounce-vars.fun
    M mlton/backend/parallel-move.fun
    M mlton/backend/parallel-move.sig

  Log Message:
  -----------
  Update additional comments and variables names to use temporaries


  Commit: 4018ddabaf0275428a16d7fbb02e781fbb22dbcf
      https://github.com/MLton/mlton/commit/4018ddabaf0275428a16d7fbb02e781fbb22dbcf
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-21 (Fri, 21 Jun 2019)

  Changed paths:
    M doc/guide/src/AllocateRegisters.adoc

  Log Message:
  -----------
  Change documentation content for AllocateRegisters


  Commit: fa0f3943fce93e03dece48d19905115a73c32813
      https://github.com/MLton/mlton/commit/fa0f3943fce93e03dece48d19905115a73c32813
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-21 (Fri, 21 Jun 2019)

  Changed paths:
    R doc/guide/src/AllocateRegisters.adoc
    A doc/guide/src/AllocateVariables.adoc
    M doc/guide/src/CommonArg.adoc
    M doc/guide/src/ToMachine.adoc

  Log Message:
  -----------
  Update documentation for register -> temporary rename.

"Abstract register" is unchanged where it appears, but
technical details use temporary.


  Commit: ec2e15ca8e6401184d4fc6cf94e0b8a9576bce5b
      https://github.com/MLton/mlton/commit/ec2e15ca8e6401184d4fc6cf94e0b8a9576bce5b
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-25 (Tue, 25 Jun 2019)

  Changed paths:
    M mlton/backend/allocate-variables.fun

  Log Message:
  -----------
  Fix incorrectly renamed variable


  Commit: cff62e1faaabe1595ec1d543d00296caa2ad64bb
      https://github.com/MLton/mlton/commit/cff62e1faaabe1595ec1d543d00296caa2ad64bb
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-25 (Tue, 25 Jun 2019)

  Changed paths:
    M mlton/backend/allocate-variables.fun
    M mlton/backend/backend.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/codegen/amd64-codegen/amd64-translate.fun
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/codegen/llvm-codegen/llvm-codegen.fun
    M mlton/codegen/x86-codegen/x86-translate.fun

  Log Message:
  -----------
  Fix ordering and more variable names for Temporaries


  Commit: 66c9a0b13071f0348f69dbe20183499b5f318f37
      https://github.com/MLton/mlton/commit/66c9a0b13071f0348f69dbe20183499b5f318f37
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-27 (Thu, 27 Jun 2019)

  Changed paths:
    M doc/guide/src/AllocateVariables.adoc
    M doc/guide/src/IntermediateLanguage.adoc
    M doc/guide/src/Machine.adoc

  Log Message:
  -----------
  Eliminate additional references to `registers` in documentation


  Commit: be55e84d982f03a6e07f30353204ddc039023c46
      https://github.com/MLton/mlton/commit/be55e84d982f03a6e07f30353204ddc039023c46
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-27 (Thu, 27 Jun 2019)

  Changed paths:
    M mlton/backend/machine.fun

  Log Message:
  -----------
  Update `Machine.Temporary.layout` to use `"T"` (rather than `"R"`)


  Commit: fd96bdcdf2fab775e19b4e38ad91bb7850b0c67f
      https://github.com/MLton/mlton/commit/fd96bdcdf2fab775e19b4e38ad91bb7850b0c67f
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-27 (Thu, 27 Jun 2019)

  Changed paths:
    M mlton/backend/allocate-variables.fun

  Log Message:
  -----------
  Fix `Error.bug` and `Trace.trace<n>` names in `AllocateVariables`


  Commit: 252b70f442736e0bd3d8e5092a0450a1b01b0909
      https://github.com/MLton/mlton/commit/252b70f442736e0bd3d8e5092a0450a1b01b0909
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-27 (Thu, 27 Jun 2019)

  Changed paths:
    M mlton/backend/machine.fun
    M mlton/codegen/amd64-codegen/amd64-translate.fun
    M mlton/codegen/llvm-codegen/llvm-codegen.fun
    M mlton/codegen/x86-codegen/x86-translate.fun

  Log Message:
  -----------
  Alphabetize `case` expressions using `Temporary`


  Commit: 1ff180958ea1a744f1b3865234321634faf61689
      https://github.com/MLton/mlton/commit/1ff180958ea1a744f1b3865234321634faf61689
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-27 (Thu, 27 Jun 2019)

  Changed paths:
    M mlton/codegen/llvm-codegen/llvm-codegen.fun

  Log Message:
  -----------
  Rename `*reg` variables to `*temp` variables in `LLVMCodegen`


  Commit: 18e460af587932723a74d297eaab78fa4439a288
      https://github.com/MLton/mlton/commit/18e460af587932723a74d297eaab78fa4439a288
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-06-27 (Thu, 27 Jun 2019)

  Changed paths:
    R doc/guide/src/AllocateRegisters.adoc
    A doc/guide/src/AllocateVariables.adoc
    M doc/guide/src/CommonArg.adoc
    M doc/guide/src/IntermediateLanguage.adoc
    M doc/guide/src/Machine.adoc
    M doc/guide/src/ToMachine.adoc
    R mlton/backend/allocate-registers.fun
    R mlton/backend/allocate-registers.sig
    A mlton/backend/allocate-variables.fun
    A mlton/backend/allocate-variables.sig
    M mlton/backend/backend.fun
    M mlton/backend/bounce-vars.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/backend/parallel-move.fun
    M mlton/backend/parallel-move.sig
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb
    M mlton/codegen/amd64-codegen/amd64-codegen.fun
    M mlton/codegen/amd64-codegen/amd64-translate.fun
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/codegen/llvm-codegen/llvm-codegen.fun
    M mlton/codegen/x86-codegen/x86-codegen.fun
    M mlton/codegen/x86-codegen/x86-translate.fun

  Log Message:
  -----------
  Merge pull request #325 from jasoncarr0/rename-register

Rename `functor AllocateRegisters` to `functor AllocateVariables`.
Rename `structure Machine.Register` to `structure Machine.Temporary`.
Rename `register/reg/r` variables to `temporary/temp/t` variables.

Since there are an infinite number of temporaries and stack slots, and
we use only a simple greedy algorithm for this, the name
`AllocateRegisters` (resp. `AllocateTemporaries`) is a bit of a
misnomer.


Compare: https://github.com/MLton/mlton/compare/df2f58107fc4...18e460af5879

[MLton-commit] [MLton/mlton] eb5843: Begin changing types for lib/mlton/basic/parse.sml...

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: eb5843458dcf17a86b3f8ebd00797db9b9a8c17f
      https://github.com/MLton/mlton/commit/eb5843458dcf17a86b3f8ebd00797db9b9a8c17f
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-09 (Sun, 09 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sml

  Log Message:
  -----------
  Begin changing types for lib/mlton/basic/parse.sml to be more efficient

There are three changes: Instead of using a thunked char stream
datastructure, use StreamIO.instream; Include first-character information
when available (many monadic uses are guarded by one character);
Remove failCut, as it was only used for end of file (Which can be
easily handled by the parsing function to the same effect)


  Commit: 8ee50d89c42fd95c48484ecf4c6e44f68028a61a
      https://github.com/MLton/mlton/commit/8ee50d89c42fd95c48484ecf4c6e44f68028a61a
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-09 (Sun, 09 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sml

  Log Message:
  -----------
  Update some more primitives in lib/mlton/basic/parse.sml


  Commit: 481d2adb8dfb807d96f010b9e632a295969446e2
      https://github.com/MLton/mlton/commit/481d2adb8dfb807d96f010b9e632a295969446e2
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-10 (Mon, 10 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sml

  Log Message:
  -----------
  Make more updates to parse.sml


  Commit: 8a47b3ca8b9b2d84d3529eef0dcff71d2e69a1a5
      https://github.com/MLton/mlton/commit/8a47b3ca8b9b2d84d3529eef0dcff71d2e69a1a5
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-10 (Mon, 10 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sml

  Log Message:
  -----------
  Continue making progress on parse changes


  Commit: 4931489822dcbf111e708757d74a8fee63e9808e
      https://github.com/MLton/mlton/commit/4931489822dcbf111e708757d74a8fee63e9808e
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-10 (Mon, 10 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sml

  Log Message:
  -----------
  Fix remaining type errors with parse implementations


  Commit: 5b19bc9ccd0fc421bf89ef221d5d962ed9fad3bf
      https://github.com/MLton/mlton/commit/5b19bc9ccd0fc421bf89ef221d5d962ed9fad3bf
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-10 (Mon, 10 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sig
    M lib/mlton/basic/parse.sml

  Log Message:
  -----------
  Update parse.sig to remove cuts


  Commit: 40e053e420766644365d95b92d3cc71da3a99145
      https://github.com/MLton/mlton/commit/40e053e420766644365d95b92d3cc71da3a99145
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-11 (Tue, 11 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sig

  Log Message:
  -----------
  Remove Parse.compose

There are a couple issues with the existing Parse.compose:
1. It acts incorrectly if the second parser fails to consume all input
from the first: The remainder of the output from parser 1 will be left
in the state, and be processed again. This is unproblematic in our
particular usage: removing comments at the top-level of a program parse.
2. It is very difficult to implement efficiently. Since the parsers
now work on vectors, it seems difficult to efficiently produce the
vectors desired by the second parser.

Since the only usage present was by comment removal, and this
only produced a space, single character, or string (that may contain
comment delimeters), it will be integrated into other methods
consuming spaces or strings, which is also a simplification.

This means that some parse errors are different: namely,
data(* a comment *)type will give an error upon reaching the first
'(', whereas compose would have produced 'data type', which
could give an error at the space or the start of type.


  Commit: d1888f724fc6fabadd7de336456031c129acab70
      https://github.com/MLton/mlton/commit/d1888f724fc6fabadd7de336456031c129acab70
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-11 (Tue, 11 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sig
    M lib/mlton/basic/parse.sml

  Log Message:
  -----------
  Add mlComment and mlSpaces to Parse

mlSpaces parses any number of spaces or comments


  Commit: 03753463a11cdfcb0b51634aba351bef91c0ca5a
      https://github.com/MLton/mlton/commit/03753463a11cdfcb0b51634aba351bef91c0ca5a
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-11 (Tue, 11 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sml

  Log Message:
  -----------
  Add parse{File/Stream/String} functions to parse.sml


  Commit: 1a4ae77971d0a0d2d7d142bea4f59780ecb13a0c
      https://github.com/MLton/mlton/commit/1a4ae77971d0a0d2d7d142bea4f59780ecb13a0c
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-11 (Tue, 11 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sml

  Log Message:
  -----------
  Fix remaining case errors in Parse.sml


  Commit: 051a6131f4705ffec0b8328185aaf04d4751f28f
      https://github.com/MLton/mlton/commit/051a6131f4705ffec0b8328185aaf04d4751f28f
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-11 (Tue, 11 Jun 2019)

  Changed paths:
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree2.fun
    M mlton/xml/xml-tree.fun

  Log Message:
  -----------
  Change all parsePrograms to use modified parse


  Commit: 51ad78b123f43fb53bd78d613e9a8bcabf2ba564
      https://github.com/MLton/mlton/commit/51ad78b123f43fb53bd78d613e9a8bcabf2ba564
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-11 (Tue, 11 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sml

  Log Message:
  -----------
  Consistently use String instead of Vector for non-mlton builds


  Commit: 1b7d89ffc93f0b671c8f22ff3fc45b10ad6406bb
      https://github.com/MLton/mlton/commit/1b7d89ffc93f0b671c8f22ff3fc45b10ad6406bb
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-11 (Tue, 11 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sml

  Log Message:
  -----------
  Make a few fixes to parse.sml


  Commit: 557b658d9f09520edf15f975c497e83af74d7fbc
      https://github.com/MLton/mlton/commit/557b658d9f09520edf15f975c497e83af74d7fbc
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-12 (Wed, 12 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sig
    M lib/mlton/basic/parse.sml
    M mlton/atoms/id.fun
    M mlton/ssa/ssa-tree2.fun

  Log Message:
  -----------
  Fix locations in new parse


  Commit: 31bd99430b7d6fb63196c33c496df7c8296f01a3
      https://github.com/MLton/mlton/commit/31bd99430b7d6fb63196c33c496df7c8296f01a3
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-12 (Wed, 12 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sml
    M mlton/atoms/id.fun

  Log Message:
  -----------
  Fix some issues with parsing


  Commit: df15b93ff088624c7b7f6a45ccb8263ec1e2d418
      https://github.com/MLton/mlton/commit/df15b93ff088624c7b7f6a45ccb8263ec1e2d418
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-14 (Fri, 14 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sml

  Log Message:
  -----------
  Union names together in parsers instead of concatenating


  Commit: 69921ce8749ce9c9157afad4b8c4a7233a3430b6
      https://github.com/MLton/mlton/commit/69921ce8749ce9c9157afad4b8c4a7233a3430b6
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-14 (Fri, 14 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sml

  Log Message:
  -----------
  Convert any to better handle first sets


  Commit: fa16e1bfdec154156b59416c8393a1fddfdad5fc
      https://github.com/MLton/mlton/commit/fa16e1bfdec154156b59416c8393a1fddfdad5fc
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sml

  Log Message:
  -----------
  Change parse stream back to simple char stream


  Commit: 91158418e9352b6dd23ecae65407a0adccc29575
      https://github.com/MLton/mlton/commit/91158418e9352b6dd23ecae65407a0adccc29575
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree2.fun
    M mlton/xml/xml-tree.fun

  Log Message:
  -----------
  Add names to remaining IRs, slowing them down some


  Commit: bb535bde34373e5da4c30f820481d28dadc8051b
      https://github.com/MLton/mlton/commit/bb535bde34373e5da4c30f820481d28dadc8051b
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sml

  Log Message:
  -----------
  Change parse state type to include furthest error information


  Commit: 4b6ea99b244ebbeee93f8da419e9f32962852d52
      https://github.com/MLton/mlton/commit/4b6ea99b244ebbeee93f8da419e9f32962852d52
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sml

  Log Message:
  -----------
  Add lastError and stack to parse state

lastError allows us to possibly give better messages
when we have a case like `many x *> y`, so that the error
reported comes from trying to parse x rather than y
(which we expect to fail more easily). It is not
fully functional in this commit.

Putting the stack in the parse state should improve
the performance of adding to the stack versus stacking
closures


  Commit: c5b2cecbb4a143f9e6d73e895138d5c9d556a9cd
      https://github.com/MLton/mlton/commit/c5b2cecbb4a143f9e6d73e895138d5c9d556a9cd
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-19 (Wed, 19 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sml

  Log Message:
  -----------
  Fix Parse lastError


  Commit: 1c09ab7817baed21bf8ed4cd104e14b54ce0bbbd
      https://github.com/MLton/mlton/commit/1c09ab7817baed21bf8ed4cd104e14b54ce0bbbd
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-19 (Wed, 19 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sig
    M lib/mlton/basic/parse.sml
    M mlton/main/compile.fun

  Log Message:
  -----------
  Use error locations and Layout.t for IR parsing errors


  Commit: da60d871128c14a87d27431700c9e38d2c5f8a00
      https://github.com/MLton/mlton/commit/da60d871128c14a87d27431700c9e38d2c5f8a00
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-20 (Thu, 20 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sml

  Log Message:
  -----------
  Use lastError correctly in Parse.any


  Commit: 5101db94337c99a6a8ab8a0ea9cb0eb2616077e6
      https://github.com/MLton/mlton/commit/5101db94337c99a6a8ab8a0ea9cb0eb2616077e6
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-20 (Thu, 20 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sml

  Log Message:
  -----------
  Remove stack from Parse


  Commit: 59da77bb10bf10d2cdc89f5ca90749be1ebaa4f3
      https://github.com/MLton/mlton/commit/59da77bb10bf10d2cdc89f5ca90749be1ebaa4f3
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-20 (Thu, 20 Jun 2019)

  Changed paths:
    M mlton/xml/xml-tree.fun

  Log Message:
  -----------
  Make some optimizations to SXML parse


  Commit: 03d7e211ff98afe820bd47900c32a07476a9554e
      https://github.com/MLton/mlton/commit/03d7e211ff98afe820bd47900c32a07476a9554e
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-21 (Fri, 21 Jun 2019)

  Changed paths:
    M mlton/xml/xml-tree.fun

  Log Message:
  -----------
  Use "con" instead of "new" for ConApps in XML/SXML, for consistency with SSA/SSA2


  Commit: 56c01e505b075092492c1157fe44a08289a5245a
      https://github.com/MLton/mlton/commit/56c01e505b075092492c1157fe44a08289a5245a
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-21 (Fri, 21 Jun 2019)

  Changed paths:
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree2.fun

  Log Message:
  -----------
  Remove names in ssa and ssa2


  Commit: b41414baa4e6b96470b760236966e7914624a31d
      https://github.com/MLton/mlton/commit/b41414baa4e6b96470b760236966e7914624a31d
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-21 (Fri, 21 Jun 2019)

  Changed paths:
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree2.fun
    M mlton/xml/xml-tree.fun

  Log Message:
  -----------
  Parse spaces before any [kw ... ,kw ...] for minor performance impact via first sets


  Commit: dca8771786377f04b65468b419f67a0847abcfe2
      https://github.com/MLton/mlton/commit/dca8771786377f04b65468b419f67a0847abcfe2
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-21 (Fri, 21 Jun 2019)

  Changed paths:
    M CHANGELOG.adoc
    M LICENSE
    M Makefile
    A Makefile.config
    M README.adoc
    M basis-library/Makefile
    M basis-library/mlton/call-stack.sml
    M basis-library/mlton/cont.sml
    M basis-library/mlton/exit.sml
    M basis-library/mlton/gc.sml
    M basis-library/mlton/profile.sml
    M basis-library/mlton/rusage.sml
    M basis-library/mlton/signal.sml
    M basis-library/mlton/thread.sml
    M basis-library/mlton/world.sml
    M basis-library/primitive/basis-ffi.sml
    M basis-library/primitive/prim-mlton.sml
    M basis-library/primitive/prim2.sml
    M benchmark/Makefile
    M bin/mlton-script
    M include/amd64-main.h
    M include/c-chunk.h
    M include/c-common.h
    M include/c-main.h
    M include/common-main.h
    M include/x86-main.h
    M lib/mlton/basic/directed-graph.sig
    M lib/mlton/basic/directed-graph.sml
    M lib/mlton/basic/hash-table.sig
    M lib/mlton/basic/hash-table.sml
    M lib/mlton/basic/hash.sig
    M lib/mlton/basic/hash.sml
    M lib/mlton/basic/vector.sig
    A lib/mlton/lattice/flat-lattice.fun
    A lib/mlton/lattice/flat-lattice.sig
    A lib/mlton/lattice/n-point-lattice.fun
    A lib/mlton/lattice/n-point-lattice.sig
    A lib/mlton/lattice/powerset-lattice.fun
    A lib/mlton/lattice/powerset-lattice.sig
    A lib/mlton/lattice/sources.cm
    A lib/mlton/lattice/sources.mlb
    A lib/mlton/lattice/three-point-lattice.fun
    A lib/mlton/lattice/three-point-lattice.sig
    A lib/mlton/lattice/two-point-lattice.fun
    A lib/mlton/lattice/two-point-lattice.sig
    M lib/mlton/sources.cm
    M lib/mlton/sources.mlb
    M mllex/Makefile
    M mlnlffigen/Makefile
    M mlprof/Makefile
    M mlton/.gitignore
    M mlton/Makefile
    M mlton/atoms/atoms.fun
    M mlton/atoms/atoms.sig
    M mlton/atoms/c-function.fun
    M mlton/atoms/c-function.sig
    M mlton/atoms/cases.fun
    M mlton/atoms/cases.sig
    M mlton/atoms/ffi.fun
    M mlton/atoms/ffi.sig
    A mlton/atoms/handler.fun
    A mlton/atoms/handler.sig
    M mlton/atoms/prim.fun
    M mlton/atoms/prim.sig
    M mlton/atoms/profile-label.fun
    M mlton/atoms/profile-label.sig
    A mlton/atoms/return.fun
    A mlton/atoms/return.sig
    A mlton/atoms/source-maps.fun
    A mlton/atoms/source-maps.sig
    M mlton/atoms/sources.cm
    M mlton/atoms/sources.mlb
    M mlton/backend/allocate-registers.fun
    M mlton/backend/allocate-registers.sig
    A mlton/backend/backend-atoms.fun
    A mlton/backend/backend-atoms.sig
    M mlton/backend/backend.fun
    M mlton/backend/backend.sig
    A mlton/backend/bounce-vars.fun
    M mlton/backend/chunkify.fun
    M mlton/backend/chunkify.sig
    M mlton/backend/equivalence-graph.fun
    M mlton/backend/implement-handlers.fun
    M mlton/backend/implement-profiling.fun
    R mlton/backend/implement-profiling.sig
    M mlton/backend/limit-check.fun
    R mlton/backend/live.fun
    R mlton/backend/live.sig
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/backend/packed-representation.fun
    M mlton/backend/rep-type.fun
    M mlton/backend/rep-type.sig
    M mlton/backend/representation.sig
    A mlton/backend/rssa-live.fun
    A mlton/backend/rssa-live.sig
    A mlton/backend/rssa-restore.fun
    A mlton/backend/rssa-restore.sig
    A mlton/backend/rssa-simplify.fun
    A mlton/backend/rssa-simplify.sig
    M mlton/backend/rssa-transform.sig
    A mlton/backend/rssa-tree.fun
    A mlton/backend/rssa-tree.sig
    M mlton/backend/rssa.fun
    M mlton/backend/rssa.sig
    M mlton/backend/runtime.fun
    M mlton/backend/runtime.sig
    R mlton/backend/scale.fun
    R mlton/backend/scale.sig
    M mlton/backend/signal-check.fun
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb
    R mlton/backend/ssa-to-rssa.fun
    R mlton/backend/ssa-to-rssa.sig
    A mlton/backend/ssa2-to-rssa.fun
    A mlton/backend/ssa2-to-rssa.sig
    M mlton/codegen/amd64-codegen/amd64-codegen.fun
    M mlton/codegen/amd64-codegen/amd64-entry-transfer.fun
    M mlton/codegen/amd64-codegen/amd64-generate-transfers.fun
    M mlton/codegen/amd64-codegen/amd64-jump-info.fun
    M mlton/codegen/amd64-codegen/amd64-live-transfers.fun
    M mlton/codegen/amd64-codegen/amd64-loop-info.fun
    M mlton/codegen/amd64-codegen/amd64-mlton-basic.fun
    M mlton/codegen/amd64-codegen/amd64-mlton-basic.sig
    M mlton/codegen/amd64-codegen/amd64-mlton.fun
    M mlton/codegen/amd64-codegen/amd64-mlton.sig
    M mlton/codegen/amd64-codegen/amd64-pseudo.sig
    M mlton/codegen/amd64-codegen/amd64-translate.fun
    M mlton/codegen/amd64-codegen/amd64-translate.sig
    M mlton/codegen/amd64-codegen/amd64.fun
    M mlton/codegen/amd64-codegen/amd64.sig
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/codegen/c-codegen/c-codegen.sig
    M mlton/codegen/llvm-codegen/llvm-codegen.fun
    M mlton/codegen/x86-codegen/x86-codegen.fun
    M mlton/codegen/x86-codegen/x86-entry-transfer.fun
    M mlton/codegen/x86-codegen/x86-generate-transfers.fun
    M mlton/codegen/x86-codegen/x86-jump-info.fun
    M mlton/codegen/x86-codegen/x86-live-transfers.fun
    M mlton/codegen/x86-codegen/x86-loop-info.fun
    M mlton/codegen/x86-codegen/x86-mlton-basic.fun
    M mlton/codegen/x86-codegen/x86-mlton-basic.sig
    M mlton/codegen/x86-codegen/x86-mlton.fun
    M mlton/codegen/x86-codegen/x86-mlton.sig
    M mlton/codegen/x86-codegen/x86-pseudo.sig
    M mlton/codegen/x86-codegen/x86-translate.fun
    M mlton/codegen/x86-codegen/x86-translate.sig
    M mlton/codegen/x86-codegen/x86.fun
    M mlton/codegen/x86-codegen/x86.sig
    M mlton/control/bits.sml
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/control/control.sig
    M mlton/control/control.sml
    A mlton/control/scale.sml
    M mlton/control/sources.cm
    M mlton/control/sources.mlb
    M mlton/control/version_sml.src
    M mlton/core-ml/core-ml.fun
    M mlton/core-ml/core-ml.sig
    M mlton/defunctorize/defunctorize.fun
    M mlton/elaborate/elaborate-env.fun
    M mlton/elaborate/elaborate-env.sig
    M mlton/elaborate/elaborate-modules.fun
    R mlton/front-end/Makefile
    M mlton/main/compile.fun
    M mlton/main/compile.sig
    M mlton/main/lookup-constant.fun
    M mlton/main/main.fun
    M mlton/match-compile/match-compile.fun
    M mlton/match-compile/match-compile.sig
    M mlton/ssa/direct-exp.fun
    R mlton/ssa/flat-lattice.fun
    R mlton/ssa/flat-lattice.sig
    M mlton/ssa/loop-unroll.fun
    M mlton/ssa/loop-unswitch.fun
    R mlton/ssa/n-point-lattice.fun
    R mlton/ssa/n-point-lattice.sig
    M mlton/ssa/shrink.fun
    M mlton/ssa/shrink2.fun
    M mlton/ssa/simplify.fun
    M mlton/ssa/simplify2.fun
    M mlton/ssa/sources.cm
    M mlton/ssa/sources.mlb
    M mlton/ssa/ssa-to-ssa2.fun
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree.sig
    M mlton/ssa/ssa-tree2.fun
    M mlton/ssa/ssa-tree2.sig
    R mlton/ssa/three-point-lattice.fun
    R mlton/ssa/three-point-lattice.sig
    R mlton/ssa/two-point-lattice.fun
    R mlton/ssa/two-point-lattice.sig
    M mlton/ssa/type-check.fun
    M mlton/ssa/type-check2.fun
    M mlton/xml/polyvariance.fun
    M mlton/xml/shrink.fun
    M mlton/xml/sxml-simplify.fun
    M mlton/xml/sxml.fun
    M mlton/xml/type-check.fun
    M mlton/xml/xml-simplify.fun
    M mlton/xml/xml-tree.fun
    M mlton/xml/xml-tree.sig
    M mlyacc/Makefile
    M package/debian/rules
    M runtime/Makefile
    M runtime/basis-ffi.h
    M runtime/basis/MLton/Rusage/rusage.c
    M runtime/basis/Posix/Process/fork.c
    M runtime/basis/Posix/Signal.c
    R runtime/basis/Real/Math-fns.h
    R runtime/basis/Real/Math.c
    M runtime/basis/Real/Real-ops.h
    M runtime/gc.h
    M runtime/gc/call-stack.c
    M runtime/gc/dfs-mark.c
    M runtime/gc/foreach.c
    M runtime/gc/frame.c
    M runtime/gc/frame.h
    M runtime/gc/gc_state.c
    M runtime/gc/gc_state.h
    M runtime/gc/handler.c
    M runtime/gc/handler.h
    M runtime/gc/init.c
    M runtime/gc/invariant.c
    M runtime/gc/profiling.c
    M runtime/gc/profiling.h
    M runtime/gc/signals.c
    M runtime/gc/signals.h
    M runtime/gc/sources.c
    M runtime/gc/sources.h
    M runtime/gc/stack.c
    M runtime/gc/stack.h
    M runtime/gen/basis-ffi.def
    M runtime/gen/basis-ffi.h
    M runtime/gen/basis-ffi.sml
    M runtime/platform.h

  Log Message:
  -----------
  Merge branch 'master' into efficient-ir-parsing


  Commit: b21675c42a492ce460abb45e11f334476deb018e
      https://github.com/MLton/mlton/commit/b21675c42a492ce460abb45e11f334476deb018e
  Author: Jason Carr <jca...@gm...>
  Date:   2019-06-21 (Fri, 21 Jun 2019)

  Changed paths:
    M mlton/main/compile.fun

  Log Message:
  -----------
  Fix merge from master


  Commit: b43ac857bdbe2769483468384433e342168c68ab
      https://github.com/MLton/mlton/commit/b43ac857bdbe2769483468384433e342168c68ab
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-21 (Fri, 21 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sig

  Log Message:
  -----------
  Move `ml{Comment,Spaces}` specs above comment for other parsers


  Commit: a9f6765d2aa54dec272f1e13b42746dd2e644fd8
      https://github.com/MLton/mlton/commit/a9f6765d2aa54dec272f1e13b42746dd2e644fd8
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-21 (Fri, 21 Jun 2019)

  Changed paths:
    M mlton/main/compile.fun
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree2.fun

  Log Message:
  -----------
  Cleanup whitespace


  Commit: df2f58107fc4c67221492446d3f3c49df0386256
      https://github.com/MLton/mlton/commit/df2f58107fc4c67221492446d3f3c49df0386256
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-06-21 (Fri, 21 Jun 2019)

  Changed paths:
    M lib/mlton/basic/parse.sig
    M lib/mlton/basic/parse.sml
    M mlton/atoms/id.fun
    M mlton/main/compile.fun
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree2.fun
    M mlton/xml/xml-tree.fun

  Log Message:
  -----------
  Merge pull request #323 from jasoncarr0/efficient-ir-parsing

Improved IR parsing efficiency and error locations

The parsing library in `lib/mlton/basic/parse.{sig,sml}` was changed:

- Parsers now record some static information about their first sets,
  so that parsers like `any` can prune options more effectively,
  reducing time and space requirements.

- Removed `compose`, due to correctness and potential performance
  issues.

- Added `mlComment` and `mlSpaces`. The former parses arbitrarily
  nested ML comments. The latter parses any number of spaces or
  comments. Since the old comments turned into a space, this is
  effectively inlining it. This simplifies the logic by not requiring
  the comment parser to be aware of strings, although in some cases
  error messages may be changed.

- Backtracking parsers, when they fail to parse, will record the
  furthest error received. This error will be reported if it is
  farther in the file then the error received after backtracking. So
  for example, this will mean that `many x *> y`, will report the
  error while parsing `x` if it is further in the file than the
  attempted parse of `y` from the start of `x`. This is particular
  important for (S)XML errors, as the recursive nature often runs into
  this issue.

- The location of the error is now reported correctly in the frontend,
  rather than just the failure message.

- In {,S}XML ILs, `new` is changed to `con` for consistency with
  SSA{,2} ILs. Also, `val rec` is changed to `fun` to enable better
  backtracking (a small speedup, on the order of a few percent).

Parse functions are not changed significantly. In some of the
`functor <IL>Tree` parsers, `mlSpaces` are sometimes read before
large `any` cases, to improve the accuracy of first sets. Most monadic
uses are guarded by static strings, and seem to be optimized well, so
there appears to be little performance impact to switching to more
applicative combinator uses.

This improves the speed of parsing by around 2-3 times. This still
doesn't bring it into a great range for larger files, but is
sensible. Parsing speed is best for the SSA IL.


Compare: https://github.com/MLton/mlton/compare/dff7cfe9d33d...df2f58107fc4

[MLton-commit] [MLton/mlton] 25c13a: Exclude `control/version.sml` as a dependency of `...

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: 25c13ace232c2cc2b4037ef3fc192b940099be15
      https://github.com/MLton/mlton/commit/25c13ace232c2cc2b4037ef3fc192b940099be15
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-20 (Thu, 20 Jun 2019)

  Changed paths:
    M mlton/Makefile

  Log Message:
  -----------
  Exclude `control/version.sml` as a dependency of `mlton-stubs.mlb`


  Commit: af63c9c2219ebdcce5a67e7baa07491977e3c628
      https://github.com/MLton/mlton/commit/af63c9c2219ebdcce5a67e7baa07491977e3c628
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-20 (Thu, 20 Jun 2019)

  Changed paths:
    M mlton/Makefile

  Log Message:
  -----------
  Targets generated by `mlton -stop f` only depend on the `.mlb` files


  Commit: f9e3afece17a7359cd510cf6221e1853493178f8
      https://github.com/MLton/mlton/commit/f9e3afece17a7359cd510cf6221e1853493178f8
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-20 (Thu, 20 Jun 2019)

  Changed paths:
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Comment to accommodate poor font-locking of string escapes


  Commit: 19c57236d35515fcac673ec5824f1cb589e36e43
      https://github.com/MLton/mlton/commit/19c57236d35515fcac673ec5824f1cb589e36e43
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-20 (Thu, 20 Jun 2019)

  Changed paths:
    M mlton/backend/rep-type.fun

  Log Message:
  -----------
  Reorder functions in `functor RepType`

Put constructors for nodes first, before derived types.


  Commit: bcd373e146e1de5146e8ccf486d48a6777806fb2
      https://github.com/MLton/mlton/commit/bcd373e146e1de5146e8ccf486d48a6777806fb2
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-20 (Thu, 20 Jun 2019)

  Changed paths:
    M mlton/control/control-flags.sml

  Log Message:
  -----------
  Simplify initialization of default MLB path map


  Commit: fcaf0daeb92afdde625d8d7034bcf2ff0f3d97a1
      https://github.com/MLton/mlton/commit/fcaf0daeb92afdde625d8d7034bcf2ff0f3d97a1
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-20 (Thu, 20 Jun 2019)

  Changed paths:
    M runtime/gc/profiling.h

  Log Message:
  -----------
  Trailing whitespace


  Commit: a3ba94d18bf7f3443fe7c892bb15ef38fdf8e7f1
      https://github.com/MLton/mlton/commit/a3ba94d18bf7f3443fe7c892bb15ef38fdf8e7f1
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-20 (Thu, 20 Jun 2019)

  Changed paths:
    M include/common-main.h

  Log Message:
  -----------
  Whitespace


  Commit: dff7cfe9d33dcb69e9e5040df0bfd9967c9c562a
      https://github.com/MLton/mlton/commit/dff7cfe9d33dcb69e9e5040df0bfd9967c9c562a
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-06-20 (Thu, 20 Jun 2019)

  Changed paths:
    M include/common-main.h
    M mlton/Makefile
    M mlton/backend/rep-type.fun
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/control/control-flags.sml
    M runtime/gc/profiling.h

  Log Message:
  -----------
  Merge pull request #322 from MatthewFluet/misc-cleanups

Miscellaneous cleanups


Compare: https://github.com/MLton/mlton/compare/65f2aa4409c1...dff7cfe9d33d

[MLton-commit] [MLton/mlton] 83da3e: Rename and generalize `callReturnStackOffsets` to ...

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: 83da3e8e2ec5bc32b475ca01a406be8cb3dfdb03
      https://github.com/MLton/mlton/commit/83da3e8e2ec5bc32b475ca01a406be8cb3dfdb03
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-17 (Mon, 17 Jun 2019)

  Changed paths:
    M mlton/backend/backend.fun

  Log Message:
  -----------
  Rename and generalize `callReturnStackOffsets` to `paramOffsets`


  Commit: 4e3b615284e6b60f2181746e9e34583b3385b0fb
      https://github.com/MLton/mlton/commit/4e3b615284e6b60f2181746e9e34583b3385b0fb
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-17 (Mon, 17 Jun 2019)

  Changed paths:
    M mlton/backend/allocate-registers.fun
    M mlton/backend/allocate-registers.sig
    M mlton/backend/backend.fun

  Log Message:
  -----------
  Rename and generalize `formalsStackOffsets` to `paramOffsets`


  Commit: d2af0f8809e0b9d37b75b2aa8befd7fa6e30a514
      https://github.com/MLton/mlton/commit/d2af0f8809e0b9d37b75b2aa8befd7fa6e30a514
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/allocate-registers.fun
    M mlton/backend/backend.fun

  Log Message:
  -----------
  Do not force function args to stack

Although function arguments are passed via the stack, they could be
allocated as registers.

In practice, because of the stack limit check at the beginning of
every function, all function args will be stack allocated, but that
may be relaxed in the future.


  Commit: 0d072dd8fdc9c54158e311e74b7d71a45b69212f
      https://github.com/MLton/mlton/commit/0d072dd8fdc9c54158e311e74b7d71a45b69212f
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/backend.fun

  Log Message:
  -----------
  Update comments in `backend.fun` for Handler and ExnStack statements


  Commit: 6f9331cbc1fbfa31a3cf861aa4f0935fd7f7c163
      https://github.com/MLton/mlton/commit/6f9331cbc1fbfa31a3cf861aa4f0935fd7f7c163
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/backend.fun

  Log Message:
  -----------
  Clarify `{return,raise}{Lives,Operands}` in `backend.fun`


  Commit: ec043833af576b4967277f516ffc2ebc2329c110
      https://github.com/MLton/mlton/commit/ec043833af576b4967277f516ffc2ebc2329c110
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/machine.fun

  Log Message:
  -----------
  Add comments on `Machine.Statement.object`


  Commit: 3709a423e63e4c2b10676fdeb77c4c7f7637edb1
      https://github.com/MLton/mlton/commit/3709a423e63e4c2b10676fdeb77c4c7f7637edb1
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/machine.fun

  Log Message:
  -----------
  Code formatting


  Commit: 2ca3a27e6374f5a04eddb9e0cdeb068a0594ffbf
      https://github.com/MLton/mlton/commit/2ca3a27e6374f5a04eddb9e0cdeb068a0594ffbf
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig

  Log Message:
  -----------
  Rename `handles` field of `Machine.Kind.Handler` to `args`


  Commit: d3dc82729357d63dc3b4863130d7c5b853e194e8
      https://github.com/MLton/mlton/commit/d3dc82729357d63dc3b4863130d7c5b853e194e8
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun

  Log Message:
  -----------
  Add `-raise-style {globals}` expert compile-time option


  Commit: ad4017eff38e49d74fa0884cbb491470d7344e31
      https://github.com/MLton/mlton/commit/ad4017eff38e49d74fa0884cbb491470d7344e31
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/allocate-registers.fun
    M mlton/backend/machine.fun
    M mlton/control/bits.sml

  Log Message:
  -----------
  Check that frame sizes are sufficiently aligned


  Commit: 108ed7128ccb4328a43c81c7fc63c1ab65e74979
      https://github.com/MLton/mlton/commit/108ed7128ccb4328a43c81c7fc63c1ab65e74979
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/allocate-registers.fun

  Log Message:
  -----------
  Reorganize code in `functor AllocateRegisters`


  Commit: fb8cd3b8bdf5cf17fc40f1cbc39113f82400836b
      https://github.com/MLton/mlton/commit/fb8cd3b8bdf5cf17fc40f1cbc39113f82400836b
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/allocate-registers.fun

  Log Message:
  -----------
  Ensure that handlerOffset is sufficiently aligned


  Commit: d445edfe4a95876c21ed776c1641d64fbd4041b5
      https://github.com/MLton/mlton/commit/d445edfe4a95876c21ed776c1641d64fbd4041b5
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/allocate-registers.fun
    M mlton/backend/allocate-registers.sig
    M mlton/backend/backend.fun

  Log Message:
  -----------
  Rename `handlerLinkOffset` to `handlersInfo` in `functor AllocateRegisters`


  Commit: af87f0cb2c4a75f5550e9dac03b6a19205143100
      https://github.com/MLton/mlton/commit/af87f0cb2c4a75f5550e9dac03b6a19205143100
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun

  Log Message:
  -----------
  Add `stack` to `-raise-style` compile-time option


  Commit: 6e42660ce80432cc4c6056ae6f9811334b6a5ab6
      https://github.com/MLton/mlton/commit/6e42660ce80432cc4c6056ae6f9811334b6a5ab6
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/allocate-registers.fun

  Log Message:
  -----------
  Reserve stack slots for handler arguments when `RaiseStyle.ViaStack`


  Commit: 0b1d353cde2c45069b6556c751abb47bc199a925
      https://github.com/MLton/mlton/commit/0b1d353cde2c45069b6556c751abb47bc199a925
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/machine.fun
    M mlton/backend/rep-type.fun

  Log Message:
  -----------
  Allow `Offset` operand of `CPointer` base in Machine IL


  Commit: a47db84927690f9576af7b3136fd2d811a165506
      https://github.com/MLton/mlton/commit/a47db84927690f9576af7b3136fd2d811a165506
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/machine.fun

  Log Message:
  -----------
  Fix `Machine.Statement.layout` (extra space before `=`)


  Commit: 6f502952f895383bdabad668caa6691323993818
      https://github.com/MLton/mlton/commit/6f502952f895383bdabad668caa6691323993818
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/machine.fun

  Log Message:
  -----------
  Add `Machine.Block.layoutHeader`


  Commit: 9fe15b3f5b64ab2f90a3145a075f8d95238b3e57
      https://github.com/MLton/mlton/commit/9fe15b3f5b64ab2f90a3145a075f8d95238b3e57
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/machine.fun

  Log Message:
  -----------
  Trace `Machine.Program.typeCheck.{liveIsOk,goto}`


  Commit: 7a8978ed31cd1a864918836145c0c975fe708f01
      https://github.com/MLton/mlton/commit/7a8978ed31cd1a864918836145c0c975fe708f01
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/machine.fun

  Log Message:
  -----------
  Add tracing of `raises` and `returns` in `Machine.Program.typeCheck.transferOk`


  Commit: ee84308e495240e804cf50e82cc90f99879a1bbb
      https://github.com/MLton/mlton/commit/ee84308e495240e804cf50e82cc90f99879a1bbb
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/machine.fun

  Log Message:
  -----------
  Add `args` to allocation at beginning of `Handler` blocks


  Commit: de894f65845e8912ff10b5b182dd897797f96f3b
      https://github.com/MLton/mlton/commit/de894f65845e8912ff10b5b182dd897797f96f3b
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/machine.fun

  Log Message:
  -----------
  Code formatting


  Commit: fc84c928b02030a7bf2ed926b89eb0c79bc7ce2f
      https://github.com/MLton/mlton/commit/fc84c928b02030a7bf2ed926b89eb0c79bc7ce2f
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/machine.fun

  Log Message:
  -----------
  Rename `live` to `handlerLive` for checking is subset of `contLive`


  Commit: d7811ed31577968a29c535260bd5d0999b58b53c
      https://github.com/MLton/mlton/commit/d7811ed31577968a29c535260bd5d0999b58b53c
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/machine.fun

  Log Message:
  -----------
  Check that `Handler` block's frame size is less than `Cont` block's


  Commit: 48f6ede27b7e6477fa369bb0a72a237ca91e60f8
      https://github.com/MLton/mlton/commit/48f6ede27b7e6477fa369bb0a72a237ca91e60f8
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/codegen/amd64-codegen/amd64-translate.fun
    M mlton/codegen/x86-codegen/x86-translate.fun

  Log Message:
  -----------
  Initialize `live` field of `Entry.Handler` in x86 & amd64 codegens


  Commit: 57390358b99580b326ad5d9fa5a4ff89b06db021
      https://github.com/MLton/mlton/commit/57390358b99580b326ad5d9fa5a4ff89b06db021
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/backend.fun

  Log Message:
  -----------
  Rename variable


  Commit: 69eec2d4d840db9a76e92e91d6d81dc0efb3e5a4
      https://github.com/MLton/mlton/commit/69eec2d4d840db9a76e92e91d6d81dc0efb3e5a4
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/machine.fun

  Log Message:
  -----------
  Raise values via stack with `-raise-style stack`

With `-raise-style globals`, raised arguments are communicated from
the raiser to the handler via (non-root) globals.  This leads to the
confusing `globalObjptrNonRoot`.  Moreover, it has been a source of
bugs in the CMU MultiMLton project, where parallel threads that raise
at the same time can interfere through the race on the handler
globals.

With the new `-raise-style stack`, raised arguments are communicated
from the raiser to the handler via the ML stack.  Sufficient space for
raised values are reserved in the handler frame immediately above the
handler label.  At a raise, the raiser stores the raised values at
offsets of `stackBottom + exnStack` and the handler copies the values
from the adjusted offsets to its argument locations.  (Thus, a
`Handler` block executes in the same manner as a `Cont` block.)

The downside of this strategy is that every stack frame with an
installed handler requires an additional 8 bytes (on a 64-bit
platform) for the raised value, which is above the 16 bytes for the
handler label and the exception stack link.  (In theory, more space
could be required if earlier optimizations flattened the `raises` of
an SSA/SSA2/RSSA function, which could happen with the `SplitTypes`
optimization that separates distinct "uses" of exceptions.  However,
in practice, the only "raise" convention has been a single `objptr`.)

A different strategy would be for the raiser to store the raised
values in its frame and then communicate the address of the raiser's
frame to the handler.  However, this would require an additional
global to communicate the address of the raiser's frame.


  Commit: ea71ba30a21b5dad241c282824601d591f101dd9
      https://github.com/MLton/mlton/commit/ea71ba30a21b5dad241c282824601d591f101dd9
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-18 (Tue, 18 Jun 2019)

  Changed paths:
    M mlton/control/control-flags.sml
    M mlton/main/main.fun

  Log Message:
  -----------
  Make `stack` default for `-raise-style`


  Commit: 481e3dba8d6683ee3f70576f671c380b11da8668
      https://github.com/MLton/mlton/commit/481e3dba8d6683ee3f70576f671c380b11da8668
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-19 (Wed, 19 Jun 2019)

  Changed paths:
    M mlton/backend/backend.fun

  Log Message:
  -----------
  Omit calculating `StackBottom + ExnStack` when no values are raised


  Commit: 2b7c59ba195e75fc9fd6a52eb0c76da83300753f
      https://github.com/MLton/mlton/commit/2b7c59ba195e75fc9fd6a52eb0c76da83300753f
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-19 (Wed, 19 Jun 2019)

  Changed paths:
    M mlton/backend/allocate-registers.fun

  Log Message:
  -----------
  Update comments in `AllocateRegisters`


  Commit: f42dfefa8a5e3c0248c19192f562526d1e6040fc
      https://github.com/MLton/mlton/commit/f42dfefa8a5e3c0248c19192f562526d1e6040fc
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-19 (Wed, 19 Jun 2019)

  Changed paths:
    M mlton/backend/allocate-registers.fun
    M mlton/backend/backend.fun
    M mlton/backend/machine.fun
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun

  Log Message:
  -----------
  Remove `-raise-style {globals}` expert compile-time option


  Commit: 03f52105d5ef56284c5bc8298ad39a95db866f57
      https://github.com/MLton/mlton/commit/03f52105d5ef56284c5bc8298ad39a95db866f57
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-19 (Wed, 19 Jun 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/machine.fun

  Log Message:
  -----------
  Remove unused variables


  Commit: c4e7964ca425c0e2ff3d733113308632f8f6c2d6
      https://github.com/MLton/mlton/commit/c4e7964ca425c0e2ff3d733113308632f8f6c2d6
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-19 (Wed, 19 Jun 2019)

  Changed paths:
    M mlton/backend/backend.fun

  Log Message:
  -----------
  Share code to generate prelude for Cont and Handler blocks


  Commit: 477b61de5b44ff5ea0debc634ce6a7e776279539
      https://github.com/MLton/mlton/commit/477b61de5b44ff5ea0debc634ce6a7e776279539
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-19 (Wed, 19 Jun 2019)

  Changed paths:
    M include/c-chunk.h
    M mlton/backend/backend.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/codegen/amd64-codegen/amd64-mlton-basic.fun
    M mlton/codegen/amd64-codegen/amd64-mlton-basic.sig
    M mlton/codegen/amd64-codegen/amd64-translate.fun
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/codegen/llvm-codegen/llvm-codegen.fun
    M mlton/codegen/x86-codegen/x86-mlton-basic.fun
    M mlton/codegen/x86-codegen/x86-mlton-basic.sig
    M mlton/codegen/x86-codegen/x86-translate.fun

  Log Message:
  -----------
  Eliminate non-root globals


  Commit: 0b02293c231ce9869d6c5e7bc6e8d7c07342c7c2
      https://github.com/MLton/mlton/commit/0b02293c231ce9869d6c5e7bc6e8d7c07342c7c2
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-19 (Wed, 19 Jun 2019)

  Changed paths:
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun

  Log Message:
  -----------
  Remove `-raise-style {stack}` expert compile-time option


  Commit: 65f2aa4409c1520b6222b671dd9ca43a461e3b79
      https://github.com/MLton/mlton/commit/65f2aa4409c1520b6222b671dd9ca43a461e3b79
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-06-19 (Wed, 19 Jun 2019)

  Changed paths:
    M include/c-chunk.h
    M mlton/backend/allocate-registers.fun
    M mlton/backend/allocate-registers.sig
    M mlton/backend/backend.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/backend/rep-type.fun
    M mlton/codegen/amd64-codegen/amd64-mlton-basic.fun
    M mlton/codegen/amd64-codegen/amd64-mlton-basic.sig
    M mlton/codegen/amd64-codegen/amd64-translate.fun
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/codegen/llvm-codegen/llvm-codegen.fun
    M mlton/codegen/x86-codegen/x86-mlton-basic.fun
    M mlton/codegen/x86-codegen/x86-mlton-basic.sig
    M mlton/codegen/x86-codegen/x86-translate.fun
    M mlton/control/bits.sml

  Log Message:
  -----------
  Merge pull request #321 from MatthewFluet/raise-via-stack

Raise values via stack

Previously, raised values are communicated from the raiser to the
handler via (non-root) globals.  This leads to the confusing
`globalObjptrNonRoot`.  Moreover, it has been a source of bugs in the
CMU MultiMLton project, where parallel threads that raise at the same
time can interfere through the race on the handler globals.

With this PR, raised values can be communicated from the raiser to the
handler via the ML stack.  Sufficient space for raised values are
reserved in the handler frame immediately above the handler label.  At
a raise, the raiser stores the raised values at offsets of
`stackBottom + exnStack`, the stack is truncated to `stackBottom +
exnStack` and control is transfered to the handler, and the handler
copies the values to its argument locations.  (Thus, a `Handler` block
executes in the same manner as a `Cont` block.)

The downside of this strategy is that every stack frame with an
installed handler requires an additional 8 bytes (on a 64-bit
platform) for the raised value, which is above the 16 bytes for the
handler label and the exception stack link.  (In theory, more space
could be required if earlier optimizations flattened the `raises` of
an SSA/SSA2/RSSA function, which could happen with the `SplitTypes`
optimization that separates distinct "uses" of exceptions.  However,
in practice, the only observed "raising" convention has been a single
`objptr`.)

A different strategy would be for the raiser to store the raised
values in its frame and then communicate the address of the raiser's
frame to the handler.  However, this would require an additional
global to communicate the address of the raiser's frame.

## Benchmark results (sulfur)

Specs:
* 2 x Intel(R) Xeon(R) CPU E5-2637 v3 @ 3.50GHz (8 physical cores; 16 logical cores)
* Ubuntu 16.04.6 LTS
* gcc: gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.11)

``` text
config command                                                               
C00    /home/mtf/devel/mlton/builds/ga02ac1f5e/bin/mlton @MLton --           
C01    /home/mtf/devel/mlton/builds/g69eec2d4d/bin/mlton @MLton --           
C02    /home/mtf/devel/mlton/builds/gea71ba30a/bin/mlton @MLton --           
C03    /home/mtf/devel/mlton/builds/ga02ac1f5e/bin/mlton @MLton -- -codegen c
C04    /home/mtf/devel/mlton/builds/g69eec2d4d/bin/mlton @MLton -- -codegen c
C05    /home/mtf/devel/mlton/builds/gea71ba30a/bin/mlton @MLton -- -codegen c
```

### Run-Time Ratio

``` text
program           `C01/C00` `C02/C00` `C04/C03` `C05/C03`
barnes-hut           1.021     1.032     0.9883    1.031 
boyer                0.9616    0.9992    0.9804    1.005 
checksum             0.9962    0.9922    0.9908    0.9939
count-graphs         1.007     1.020     1.009     1.023 
DLXSimulator         1.011     1.004     0.9962    0.9976
even-odd             1.003     1.002     0.9948    0.9940
fft                  1.010     1.019     1.001     0.9851
fib                  1.001     0.9039    0.9917    1.005 
flat-array           1.030     1.050     0.9571    0.9940
hamlet               1.010     1.066     0.9999    1.057 
imp-for              1.002     0.9951    0.9250    0.9260
knuth-bendix         1.011     1.016     1.029     1.067 
lexgen               0.9917    1.001     0.9459    0.9801
life                 1.017     1.024     1.004     0.9926
logic                1.029     1.026     1.003     0.9835
mandelbrot           0.9986    0.9981    0.9734    0.9693
matrix-multiply      1.024     1.026     0.9997    1.014 
md5                  0.9990    1.018     1.000     1.001 
merge                1.004     0.9875    0.9845    0.9644
mlyacc               1.037     0.9868    1.012     0.9841
model-elimination    1.015     1.011     0.9899    1.020 
mpuz                 0.9901    0.9817    1.008     1.011 
nucleic              1.011     1.034     0.9914    0.9967
output1              1.008     0.9974    1.009     1.002 
peek                 0.9957    0.9984    0.9996    1.012 
pidigits             1.010     1.017     1.016     0.9939
psdes-random         1.016     1.019     1.007     1.004 
ratio-regions        0.9900    0.9783    1.041     1.017 
ray                  0.9756    0.9999    1.012     0.9621
raytrace             0.9857    0.9847    1.039     1.018 
simple               0.9879    1.050     1.007     1.031 
smith-normal-form    1.017     0.9531    1.030     0.9971
string-concat        1.016     1.005     0.9950    0.9993
tailfib              1.008     1.000     0.9874    0.9918
tailmerge            1.005     0.9837    1.025     0.9892
tak                  0.9929    1.061     1.016     1.013 
tensor               1.001     0.9975    0.9964    0.9933
tsp                  1.004     0.9858    1.069     1.026 
tyan                 0.9888    1.007     1.008     1.013 
vector32-concat      0.9841    0.9867    0.9764    0.9810
vector64-concat      1.026     1.051     1.048     0.9761
vector-rev           1.013     1.019     1.023     1.020 
vliw                 1.011     0.9732    0.9941    1.018 
wc-input1            0.9887    0.9828    1.007     0.9930
wc-scanStream        0.9907    1.070     0.9290    0.9823
zebra                0.9993    1.003     1.005     0.9955
zern                 0.9815    1.007     0.9989    1.020 
MIN                  0.9616    0.9039    0.9250    0.9260
GMEAN                1.004     1.006     1.0000    1.001 
MAX                  1.037     1.070     1.069     1.067 
```

Notes:
* The expectation is that `C01/C00` and `C04/C03` should both be
  `1.0`, since those configurations correspond to infrastructure
  changes, but does not switch the raising convention.  The minor
  changes include swapping the positions of the handler label and the
  exception stack link on the handler frame and ensuring proper
  alignment of the handler label (although the latter should have no
  effect on amd64, which defaults to `-align 8` and uses 64-bit (with
  8 byte alignment) code labels).
* On (geometric) average, there is no significant slowdown due to the
  alternate raising convention, although there are some negative
  outliers.
* Also, note that there is little correlation between `Run-Time Ratio`
  and `Max Stack Size Ratio` (see below).  This suggests that
  performance changes are likely due to low-level effects such as
  cache, not due to the increased total stack size.

### Max Stack Size Ratio (run-time)

``` text
program           `C01/C00` `C02/C00` `C04/C03` `C05/C03`
barnes-hut                1    1.035          1    1.038 
boyer                     1    1.048          1    1.048 
checksum                  1    1.065          1    1.065 
count-graphs              1    1.045          1    1.045 
DLXSimulator              1    1.032          1    1.032 
even-odd                  1    1.067          1    1.067 
fft                       1    1.043          1    1.043 
fib                       1    1.067          1    1.067 
flat-array                1    1.065          1    1.065 
hamlet                    1    1.016          1    1.016 
imp-for                   1    1.067          1    1.067 
knuth-bendix              1    1.042          1    1.042 
lexgen                    1    1.02           1    1.02  
life                      1    1.062          1    1.062 
logic                     1    1              1    1     
mandelbrot                1    1.067          1    1.067 
matrix-multiply           1    1.065          1    1.065 
md5                       1    1.047          1    1.047 
merge                     1    1.065          1    1.065 
mlyacc                    1    1.007          1    1.007 
model-elimination         1    1.021          1    1.021 
mpuz                      1    1.062          1    1.062 
nucleic                   1    1              1    1     
output1                   1    1.05           1    1.05  
peek                      1    1.067          1    1.067 
pidigits                  1    1.048          1    1.048 
psdes-random              1    1.067          1    1.067 
ratio-regions             1    1.027          1    1.027 
ray                       1    0.9886         1    0.9886
raytrace                  1    1.018          1    1.018 
simple                    1    0.9430         1    0.9430
smith-normal-form         1    1.039          1    1.039 
string-concat             1    1.061          1    1.061 
tailfib                   1    1.067          1    1.067 
tailmerge                 1    1.065          1    1.065 
tak                       1    1.067          1    1.067 
tensor                    1    1.027          1    1.027 
tsp                       1    1.045          1    1.045 
tyan                      1    1.017          1    1.017 
vector32-concat           1    1.065          1    1.065 
vector64-concat           1    1.065          1    1.065 
vector-rev                1    1.065          1    1.065 
vliw                      1    1              1    1     
wc-input1                 1    1.044          1    1.044 
wc-scanStream             1    1.041          1    1.041 
zebra                     1    2.071          1    2.071 
zern                      1    1.039          1    1.039 
MIN                       1    0.9430         1    0.9430
GMEAN                     1    1.057          1    1.057 
MAX                       1    2.071          1    2.071 
```

Notes:
* As expected, there is a slight increase in the maximum stack size
  due to the space reserved for raised values.  However, note that the
  maximum stack size corresponds to the largest stack space reserved
  by the runtime system, not the largest stack space used by the
  mutator.  The default stack sizing policy is to double the stack
  space reserved each time the stack is grown, which explains the
  maximum ratio of `2.071`.  Similarly, this stack sizing policy
  explains how the ratio can be less than `1.0`, when early stack
  growth with larger frames suffices for the maximum used stack, while
  early stack growth with smaller frames requires additional later
  growth for the maximum used stack.  Moreover, `zebra` has a very
  small stack: `C00`&`C01`&`C03`&`C04` are 3584 and `C02`&`C05` are
  7424.

### Max Stack Size Ratio (compile-time)

``` text
program           `C01/C00` `C02/C00` `C04/C03` `C05/C03`
barnes-hut           1.001     1.003     1.001     1.003 
boyer                1.001     2.005     1.001     2.005 
checksum             1.001     1.003     1.001     1.003 
count-graphs         1.001     1.003     1.001     1.003 
DLXSimulator         1.001     1.003     1.001     1.003 
even-odd             1.001     1.003     1.001     1.003 
fft                  1.001     1.003     1.001     1.003 
fib                  1.001     1.003     1.001     1.003 
flat-array           1.001     1.003     1.001     1.003 
hamlet               1.001     1.003     1.001     1.003 
imp-for              1.001     1.003     1.001     1.003 
knuth-bendix         1.001     1.003     1.001     1.003 
lexgen               1.001     1.003     1.001     1.003 
life                 1.001     1.003     1.001     1.003 
logic                1.001     1.003     1.001     1.003 
mandelbrot           1.001     1.003     1.001     1.003 
matrix-multiply      1.001     1.003     1.001     1.003 
md5                  1.001     1.003     1.001     1.003 
merge                1.001     1.003     1.001     1.003 
mlyacc               0.9644    0.9839    0.9644    0.9839
model-elimination    0.9820    0.9679    0.9828    0.9679
mpuz                 1.001     1.003     1.001     1.003 
nucleic              1.001     1.003     1.001     1.003 
output1              1.001     1.003     1.001     1.003 
peek                 1.001     1.003     1.001     1.003 
pidigits             1.001     1.003     1.001     1.003 
psdes-random         1.001     1.003     1.001     1.003 
ratio-regions        1.001     1.003     1.001     1.003 
ray                  1.001     1.003     1.001     1.003 
raytrace             1.001     1.055     1.001     1.055 
simple               1.001     1.003     1.001     1.003 
smith-normal-form    1.001     1.003     1.001     1.003 
string-concat        1.001     1.003     1.001     1.003 
tailfib              1.001     1.003     1.001     1.003 
tailmerge            1.001     1.003     1.001     1.003 
tak                  1.001     1.003     1.001     1.003 
tensor               1.001     1.003     1.001     1.003 
tsp                  1.001     1.003     1.001     1.003 
tyan                 1.001     1.003     1.001     1.003 
vector32-concat      1.001     1.003     1.001     1.003 
vector64-concat      1.001     1.003     1.001     1.003 
vector-rev           1.001     1.003     1.001     1.003 
vliw                 1.001     1.003     1.001     1.003 
wc-input1            1.001     1.003     1.001     1.003 
wc-scanStream        1.001     1.003     1.001     1.003 
zebra                1.001     1.003     1.001     1.003 
zern                 1.001     1.003     1.001     1.003 
MIN                  0.9644    0.9679    0.9644    0.9679
GMEAN                1.000     1.018     1.000     1.018 
MAX                  1.001     2.005     1.001     2.005 
```

Note:
* The effect of the larger frames is less pronounced in the compiler
  proper, although the `2.005` outlier does appear.

## Self-compile results (sulfur)

Specs:
* 2 x Intel(R) Xeon(R) CPU E5-2637 v3 @ 3.50GHz (8 physical cores; 16 logical cores)
* Ubuntu 16.04.6 LTS
* gcc: gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.11)

``` text
MLton 20190618.195743-g69eec2d4d finished in 202.23 + 26.50 (12% GC)
GC type         time ms  number           bytes       bytes/sec
-------------   ------- ------- --------------- ---------------
copying          24,960      32  16,223,789,408     649,991,548 
mark-compact          0       0               0               - 
minor                 0      68          56,768               - 
total time: 222,664 ms
total GC time: 26,504 ms (11.9%)
max pause time: 2,732 ms
total bytes allocated: 173,669,514,440 bytes
max bytes live: 1,568,690,392 bytes
max heap size: 12,549,611,520 bytes
max stack size: 24,412,160 bytes
num cards marked: 198
bytes scanned: 4,550,744 bytes
bytes hash consed: 0 bytes

MLton 20190618.221106-gea71ba30a finished in 193.37 + 27.39 (12% GC)
GC type         time ms  number           bytes       bytes/sec
-------------   ------- ------- --------------- ---------------
copying          24,972      33  17,227,509,912     689,873,048 
mark-compact          0       0               0               - 
minor                 0      67          61,616               - 
total time: 215,532 ms
total GC time: 27,396 ms (12.7%)
max pause time: 3,320 ms
total bytes allocated: 174,112,963,256 bytes
max bytes live: 1,520,008,000 bytes
max heap size: 12,160,098,304 bytes
max stack size: 24,444,928 bytes
num cards marked: 195
bytes scanned: 6,078,928 bytes
bytes hash consed: 0 bytes
```

Notes:
* On (fully-bootstraped) self-compile, the max stack size ratio is
  only `1.001`.


Compare: https://github.com/MLton/mlton/compare/a02ac1f5e878...65f2aa4409c1

[MLton-commit] [MLton/mlton] e9d8fd: Add `compiler-clean` target to simplify bootstrap ...

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: e9d8fddfd3280afaab91e5c6efa3acc5919ef077
      https://github.com/MLton/mlton/commit/e9d8fddfd3280afaab91e5c6efa3acc5919ef077
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-14 (Fri, 14 Jun 2019)

  Changed paths:
    M Makefile

  Log Message:
  -----------
  Add `compiler-clean` target to simplify bootstrap in `all` target


  Commit: b9d55eaf32cb19f1cd6d642a22a6bf19bc3300c6
      https://github.com/MLton/mlton/commit/b9d55eaf32cb19f1cd6d642a22a6bf19bc3300c6
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-14 (Fri, 14 Jun 2019)

  Changed paths:
    M Makefile
    M bin/mlton-script
    M mlton/Makefile
    M mlton/control/version_sml.src

  Log Message:
  -----------
  Extend `Makefile` to use `MLTON` variable for output name


  Commit: 25b25487e57817b3efbc2056a0e0f6532cc0bf97
      https://github.com/MLton/mlton/commit/25b25487e57817b3efbc2056a0e0f6532cc0bf97
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-14 (Fri, 14 Jun 2019)

  Changed paths:
    M mlton/.gitignore

  Log Message:
  -----------
  Update `mlton/.gitignore`


  Commit: a0d50166ed1e439d3a1285e74ee1ea9d6e7c94e5
      https://github.com/MLton/mlton/commit/a0d50166ed1e439d3a1285e74ee1ea9d6e7c94e5
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-14 (Fri, 14 Jun 2019)

  Changed paths:
    M Makefile
    A Makefile.config
    M basis-library/Makefile
    M mllex/Makefile
    M mlnlffigen/Makefile
    M mlprof/Makefile
    M mlton/Makefile
    M mlyacc/Makefile
    M runtime/Makefile

  Log Message:
  -----------
  Introduce `Makefile.config` for common makefile configuration


  Commit: 39cfcbfa746e0b61860b8fd8a2e2eedd2b561d38
      https://github.com/MLton/mlton/commit/39cfcbfa746e0b61860b8fd8a2e2eedd2b561d38
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-14 (Fri, 14 Jun 2019)

  Changed paths:
    M mlton/front-end/Makefile

  Log Message:
  -----------
  Use `Makefile.config` in `mlton/front-end/Makefile`


  Commit: f4235463fe0c2ca5bbc8297c2c67ff706590551e
      https://github.com/MLton/mlton/commit/f4235463fe0c2ca5bbc8297c2c67ff706590551e
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-14 (Fri, 14 Jun 2019)

  Changed paths:
    M Makefile
    M Makefile.config
    M mlton/Makefile

  Log Message:
  -----------
  Configure `make` with `MLTON_FORK` and `BOOTSTRAP_STYLE`

`MLTON_FORK` allows for a single change to identify a fork, qualifying
the built compiler name and the version string.

`BOOTSTRAP_STYLE` allows for configuring the "degree" of
bootstrapping:

    0 -- Use $(BOOTSTRAP_MLTON) for round1 (and stop)
    1 -- Use $(BIN)/$(MLTON) for round1 (and stop);
         default if $(BIN)/$(MLTON) exists
    2 -- Use $(BOOTSTRAP_MLTON) for round1; use $(BIN)/$(MLTON) for round2;
         default if $(BIN)/$(MLTON) does not exist
    3 -- Use $(BOOTSTRAP_MLTON) or use $(BIN)/$(MLTON) for round1;
         use $(BIN)/$(MLTON) for round2;
         use $(BIN)/$(MLTON) for round3 (and check fixpoint)


  Commit: e6342b63bd4df88d1ceea4badc20b3012dd498dc
      https://github.com/MLton/mlton/commit/e6342b63bd4df88d1ceea4badc20b3012dd498dc
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-15 (Sat, 15 Jun 2019)

  Changed paths:
    M Makefile.config
    M README.adoc
    M mlton/Makefile
    M package/debian/rules

  Log Message:
  -----------
  Rename `BOOTSTRAP_MLTON` to `OLD_MLTON`


  Commit: 04ef2f6cdfd19d4a1f6d566213f0269989130381
      https://github.com/MLton/mlton/commit/04ef2f6cdfd19d4a1f6d566213f0269989130381
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-15 (Sat, 15 Jun 2019)

  Changed paths:
    M Makefile.config
    M mlton/Makefile

  Log Message:
  -----------
  Rename `MLTON_ACTUAL` to `RUN_MLTON` and move to `Makefile.config`


  Commit: 9255d4c6d6ca4a12858d17d660c40ed430005020
      https://github.com/MLton/mlton/commit/9255d4c6d6ca4a12858d17d660c40ed430005020
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-15 (Sat, 15 Jun 2019)

  Changed paths:
    M mllex/Makefile
    M mlnlffigen/Makefile
    M mlprof/Makefile
    M mlyacc/Makefile

  Log Message:
  -----------
  Use `RUN_MLTON` to build tools


  Commit: 2643ac76f8d5c796343ce44a76d6af2a37bbe04a
      https://github.com/MLton/mlton/commit/2643ac76f8d5c796343ce44a76d6af2a37bbe04a
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-16 (Sun, 16 Jun 2019)

  Changed paths:
    M Makefile

  Log Message:
  -----------
  Add `show-vars` target


  Commit: dc586971359ef6b83e46dfb501ad2adef59b7b49
      https://github.com/MLton/mlton/commit/dc586971359ef6b83e46dfb501ad2adef59b7b49
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-17 (Mon, 17 Jun 2019)

  Changed paths:
    M Makefile

  Log Message:
  -----------
  Add more Makefile variables to `show-vars` target


  Commit: 0ba23c12223512b95cc21c3f76adf357a4ee5227
      https://github.com/MLton/mlton/commit/0ba23c12223512b95cc21c3f76adf357a4ee5227
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-17 (Mon, 17 Jun 2019)

  Changed paths:
    M Makefile

  Log Message:
  -----------
  Rename `show-vars` target to `show-config`


  Commit: faeb0a03e432e1e9c38feb5fbfd9464253e14e58
      https://github.com/MLton/mlton/commit/faeb0a03e432e1e9c38feb5fbfd9464253e14e58
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-17 (Mon, 17 Jun 2019)

  Changed paths:
    M basis-library/Makefile

  Log Message:
  -----------
  Use `$(BIN)/$(MLTON)` in `basis-library/Makefile`


  Commit: 6519a98147a1ed1803321e39586a417d1ef75fd1
      https://github.com/MLton/mlton/commit/6519a98147a1ed1803321e39586a417d1ef75fd1
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-17 (Mon, 17 Jun 2019)

  Changed paths:
    M Makefile.config

  Log Message:
  -----------
  Simplify `$(BIN)/$(MLTON)` existence check in `Makefile.config`


  Commit: 0b10d29772c1a92918f4e3797baa4738c1043b52
      https://github.com/MLton/mlton/commit/0b10d29772c1a92918f4e3797baa4738c1043b52
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-17 (Mon, 17 Jun 2019)

  Changed paths:
    M Makefile.config

  Log Message:
  -----------
  Define `RUN_{MLLEX,MLYACC}` in `Makefile.config`


  Commit: 442ef65d59689ce71f93e578f038e3c7a6872753
      https://github.com/MLton/mlton/commit/442ef65d59689ce71f93e578f038e3c7a6872753
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-17 (Mon, 17 Jun 2019)

  Changed paths:
    M mlton/front-end/Makefile
    M mlyacc/Makefile

  Log Message:
  -----------
  Use `RUN_{MLLEX,MLYACC}` in `mlton/front-end/Makefile` and `mlyacc/Makefile`


  Commit: 25309345d8f63a6586c3e8d9f4e23091f7cda38a
      https://github.com/MLton/mlton/commit/25309345d8f63a6586c3e8d9f4e23091f7cda38a
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-17 (Mon, 17 Jun 2019)

  Changed paths:
    M runtime/Makefile

  Log Message:
  -----------
  Use `RUN_MLTON` in `runtime/Makefile`


  Commit: 74bf5ca936e4b365414539792472fae1f501c004
      https://github.com/MLton/mlton/commit/74bf5ca936e4b365414539792472fae1f501c004
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-17 (Mon, 17 Jun 2019)

  Changed paths:
    M Makefile.config

  Log Message:
  -----------
  Warn in `Makefile.config` if `mlton`, `mllex`, or `mlyacc` not found


  Commit: aa12113f7d1094e7db1d32fbfb60f712431eb07d
      https://github.com/MLton/mlton/commit/aa12113f7d1094e7db1d32fbfb60f712431eb07d
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-17 (Mon, 17 Jun 2019)

  Changed paths:
    M mlton/Makefile

  Log Message:
  -----------
  Use `RUN_MLTON` for `mlton-stubs.mlb` in `mlton/Makefile`


  Commit: 2d856b18869dd33c53da3ad1c5638d4963a5ff55
      https://github.com/MLton/mlton/commit/2d856b18869dd33c53da3ad1c5638d4963a5ff55
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-17 (Mon, 17 Jun 2019)

  Changed paths:
    M mlton/Makefile

  Log Message:
  -----------
  Whitespace in `mlton/Makefile`


  Commit: 537b2b8b050cf2ea2b19cdbfb7d9b60ff711ff22
      https://github.com/MLton/mlton/commit/537b2b8b050cf2ea2b19cdbfb7d9b60ff711ff22
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-17 (Mon, 17 Jun 2019)

  Changed paths:
    M Makefile.config

  Log Message:
  -----------
  Don't add `$(BIN)` to `PATH` in `Makefile.config`


  Commit: 8b12c38908094746c0d65a7758e1a2c11ef50980
      https://github.com/MLton/mlton/commit/8b12c38908094746c0d65a7758e1a2c11ef50980
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-17 (Mon, 17 Jun 2019)

  Changed paths:
    M benchmark/Makefile

  Log Message:
  -----------
  Use `Makefile.config` in `benchmark/Makefile`


  Commit: 5d864948f890e900675151fa5578544c4958d7b9
      https://github.com/MLton/mlton/commit/5d864948f890e900675151fa5578544c4958d7b9
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-17 (Mon, 17 Jun 2019)

  Changed paths:
    M Makefile

  Log Message:
  -----------
  Reorganize `Makefile`


  Commit: 2f462256df14911eeadd3505b7df9c96f49ac34c
      https://github.com/MLton/mlton/commit/2f462256df14911eeadd3505b7df9c96f49ac34c
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-17 (Mon, 17 Jun 2019)

  Changed paths:
    M Makefile
    M Makefile.config

  Log Message:
  -----------
  Introduce `MK_SHOW_CONFIG` in `Makefile.config` for making `show-config` target


  Commit: e0d757d4059cdf2bc103cad95699c14aff6b9c77
      https://github.com/MLton/mlton/commit/e0d757d4059cdf2bc103cad95699c14aff6b9c77
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-17 (Mon, 17 Jun 2019)

  Changed paths:
    M mlton/Makefile
    R mlton/front-end/Makefile

  Log Message:
  -----------
  Reorganize `mlton/Makefile` and delete `mlton/front-end/Makefile`


  Commit: 2f4980c77f718204e06d7c0cfd4a509654730919
      https://github.com/MLton/mlton/commit/2f4980c77f718204e06d7c0cfd4a509654730919
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-17 (Mon, 17 Jun 2019)

  Changed paths:
    M Makefile
    M basis-library/Makefile
    M mllex/Makefile
    M mlnlffigen/Makefile
    M mlprof/Makefile
    M mlton/Makefile
    M mlyacc/Makefile

  Log Message:
  -----------
  Use `$(SRC)/bin/clean` for `Makefile`s that include `Makefile.config`


  Commit: d696da8b72ec65289f189e6adea54445e12684a1
      https://github.com/MLton/mlton/commit/d696da8b72ec65289f189e6adea54445e12684a1
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-17 (Mon, 17 Jun 2019)

  Changed paths:
    M Makefile.config

  Log Message:
  -----------
  Only warn in `Makefile.config` if tools not found at top-level


  Commit: a02ac1f5e878f6cc405bff5e75711513980d09cd
      https://github.com/MLton/mlton/commit/a02ac1f5e878f6cc405bff5e75711513980d09cd
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-06-17 (Mon, 17 Jun 2019)

  Changed paths:
    M Makefile
    A Makefile.config
    M README.adoc
    M basis-library/Makefile
    M benchmark/Makefile
    M bin/mlton-script
    M mllex/Makefile
    M mlnlffigen/Makefile
    M mlprof/Makefile
    M mlton/.gitignore
    M mlton/Makefile
    M mlton/control/version_sml.src
    R mlton/front-end/Makefile
    M mlyacc/Makefile
    M package/debian/rules
    M runtime/Makefile

  Log Message:
  -----------
  Merge pull request #320 from MatthewFluet/makefile-updates

Makefile updates

Various updates to `Makefile`s.  Introduce `Makefile.config` for
common configuration, make it easier to configure `OLD_MLTON` (and
`OLD_MLLEX` and `OLD_MLYACC`), easier to configure the
`BOOTSTRAP_STYLE` (e.g., `BOOTSTRAP_STYLE=0` always uses "old"
`mlton`, even if "new" `mlton` exists), easier to configure a
`MLTON_FORK` (which induces a different `mlton` script name).


Compare: https://github.com/MLton/mlton/compare/dff6893e17d0...a02ac1f5e878

[MLton-commit] [MLton/mlton] 7cc22f: Eliminate global `MLton_FFI_opArgsResPtr`

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: 7cc22f34ff18d3433c17f4f9089e4d8b6d48f063
      https://github.com/MLton/mlton/commit/7cc22f34ff18d3433c17f4f9089e4d8b6d48f063
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-14 (Fri, 14 Jun 2019)

  Changed paths:
    M basis-library/mlton/thread.sml
    M basis-library/primitive/prim-mlton.sml
    M include/amd64-main.h
    M include/c-main.h
    M include/x86-main.h
    M mlton/atoms/ffi.fun
    M runtime/gc/gc_state.c
    M runtime/gc/gc_state.h

  Log Message:
  -----------
  Eliminate global `MLton_FFI_opArgsResPtr`

Instead, introduce a `pointer callFromCOpArgsResPtr` field in `struct
GC_state`.  This makes the value per gcState, which minimizes the diff
between MLton and the CMU MultiMLton project.


  Commit: dff6893e17d0ca512d4bccdbbb33b42cf39906b5
      https://github.com/MLton/mlton/commit/dff6893e17d0ca512d4bccdbbb33b42cf39906b5
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-06-14 (Fri, 14 Jun 2019)

  Changed paths:
    M basis-library/mlton/thread.sml
    M basis-library/primitive/prim-mlton.sml
    M include/amd64-main.h
    M include/c-main.h
    M include/x86-main.h
    M mlton/atoms/ffi.fun
    M runtime/gc/gc_state.c
    M runtime/gc/gc_state.h

  Log Message:
  -----------
  Merge pull request #319 from MatthewFluet/call-from-c-op-args-res-ptr-per-gc_state

Eliminate global `MLton_FFI_opArgsResPtr`


Compare: https://github.com/MLton/mlton/compare/1672f09db33d...dff6893e17d0

[MLton-commit] [MLton/mlton] e0cbba: Eliminate unused `Runtime.MaxFrameSize`

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: e0cbba9d28cd0c95640bc331d18ab85465e55be9
      https://github.com/MLton/mlton/commit/e0cbba9d28cd0c95640bc331d18ab85465e55be9
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-12 (Wed, 12 Jun 2019)

  Changed paths:
    M mlton/backend/rep-type.fun
    M mlton/backend/runtime.fun
    M mlton/backend/runtime.sig
    M mlton/main/compile.fun
    M mlton/main/lookup-constant.fun

  Log Message:
  -----------
  Eliminate unused `Runtime.MaxFrameSize`


  Commit: 6a0a2320645df9c751647a0539bc619b37239828
      https://github.com/MLton/mlton/commit/6a0a2320645df9c751647a0539bc619b37239828
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-12 (Wed, 12 Jun 2019)

  Changed paths:
    M mlton/backend/rep-type.fun
    M mlton/backend/runtime.fun
    M mlton/backend/runtime.sig
    M mlton/main/compile.fun
    M mlton/main/lookup-constant.fun

  Log Message:
  -----------
  Eliminate unused `Runtime.CurrentThread`


  Commit: d49793585c48b711f914c56c115782b4b43a7ff2
      https://github.com/MLton/mlton/commit/d49793585c48b711f914c56c115782b4b43a7ff2
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-12 (Wed, 12 Jun 2019)

  Changed paths:
    M mlton/atoms/prim.fun
    M mlton/atoms/prim.sig
    M mlton/backend/rep-type.fun
    M mlton/backend/ssa2-to-rssa.fun

  Log Message:
  -----------
  Introduce `GC_state` primitive, translated to `GCState` RSSA operand

This primitive will replace the use of `_symbol "gcStateAddress"` in
the Basis Library implementation.

One motivation is that it eliminates two "names" for the same thing;
the RSSA `GCState` operand and the pointer fetched from
`gcStateAddress`.

Another motivation is that the CMU MultiMLton compiler cannot use
`_symbol "gcStateAddress"`, because this fetches the primary (aka,
pthread0) `gcState` address once at the beginning of the evaluation of
the Basis Library, but each use of the value should actually be with
respect to the `gcState` of the executing pthread.

In the Basis Library, the type of `Primitive.MLton.GCState.t` is
`Pointer.t` (which is the primitive type `cpointer`, which becomes the RSSA IL
type `CPointer`), but in the RSSA IL, the type of the `GCState` operand is
`GCState`.  One option would be to introduce a new primitive type `gcstate` to
become the RSSA `GCState` type; however, this would affect all of the
intermediate ILs.  Moreover, the RSSA type checking of `GCState` is somewhat
weak, so it seems simpler to simply replace the RSSA `GCState` type with the
RSSA `CPointer` type.  (Similarly, we replace the RSSA `ExnStack` type with the
RSSA `Word` type of the appropriate size.)


  Commit: 4fe198c2525b8224d0d3aaa673a52b67b78bf6d6
      https://github.com/MLton/mlton/commit/4fe198c2525b8224d0d3aaa673a52b67b78bf6d6
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-12 (Wed, 12 Jun 2019)

  Changed paths:
    M basis-library/mlton/call-stack.sml
    M basis-library/mlton/cont.sml
    M basis-library/mlton/gc.sml
    M basis-library/mlton/profile.sml
    M basis-library/mlton/thread.sml
    M basis-library/mlton/world.sml
    M basis-library/primitive/prim-mlton.sml

  Log Message:
  -----------
  Use `GC_state` primitive instead of `_symbol "gcStateAddress"`

One motivation is that it eliminates two "names" for the same thing;
the RSSA `GCState` operand and the pointer fetched from
`gcStateAddress`.

Another motivation is that the CMU MultiMLton compiler cannot use
`_symbol "gcStateAddress"`, because this fetches the primary (aka,
pthread0) `gcState` address once at the beginning of the evaluation of
the Basis Library, but each use of the value should actually be with
respect to the `gcState` of the executing pthread.


  Commit: 92b532131a8f4b27e9f50b80d889ce0ddb309508
      https://github.com/MLton/mlton/commit/92b532131a8f4b27e9f50b80d889ce0ddb309508
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-12 (Wed, 12 Jun 2019)

  Changed paths:
    M include/common-main.h

  Log Message:
  -----------
  Eliminate global `gcStateAddress`


  Commit: 521bbf49235d7cd9b33ea53ef3eea56a67e6b192
      https://github.com/MLton/mlton/commit/521bbf49235d7cd9b33ea53ef3eea56a67e6b192
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-13 (Thu, 13 Jun 2019)

  Changed paths:
    M runtime/platform.h

  Log Message:
  -----------
  Make `GCState_t` visible when including `basis-ffi.h`


  Commit: b4425634e84f9481f1555cbdc3ca3174b7d0c5ab
      https://github.com/MLton/mlton/commit/b4425634e84f9481f1555cbdc3ca3174b7d0c5ab
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-13 (Thu, 13 Jun 2019)

  Changed paths:
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Translate `Word_rndToReal` primitive to `CCall` for C codegen

When `Word<N>_rndToReal<M>` is treated as a primitive in the C
codegen, then the function is not declared with a prototype.
Currently, the prototype is picked up by `#include "basis-ffi.h"` in
`c-chunk.h`, but that will be removed in the next commit.


  Commit: 21ea126e74cabc01fc5959f7b0e40f046eb647d7
      https://github.com/MLton/mlton/commit/21ea126e74cabc01fc5959f7b0e40f046eb647d7
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-13 (Thu, 13 Jun 2019)

  Changed paths:
    M include/c-chunk.h

  Log Message:
  -----------
  Omit `#include "basis-ffi.h"` in c-chunk.h


  Commit: 4bcae43ee4320ef314e920ef6408f0d9a7484305
      https://github.com/MLton/mlton/commit/4bcae43ee4320ef314e920ef6408f0d9a7484305
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-13 (Thu, 13 Jun 2019)

  Changed paths:
    M basis-library/mlton/rusage.sml
    M basis-library/primitive/basis-ffi.sml
    M basis-library/primitive/prim-mlton.sml
    M runtime/basis-ffi.h
    M runtime/basis/MLton/Rusage/rusage.c
    M runtime/gen/basis-ffi.def
    M runtime/gen/basis-ffi.h
    M runtime/gen/basis-ffi.sml

  Log Message:
  -----------
  Eliminate `extern struct GC_state gcState` in `MLton/Rusage/rusage.c`


  Commit: f7b0d35f1b8f949b116f14eb4d036937a73c6d26
      https://github.com/MLton/mlton/commit/f7b0d35f1b8f949b116f14eb4d036937a73c6d26
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-13 (Thu, 13 Jun 2019)

  Changed paths:
    M basis-library/mlton/signal.sml
    M basis-library/primitive/basis-ffi.sml
    M runtime/basis-ffi.h
    M runtime/basis/Posix/Signal.c
    M runtime/gen/basis-ffi.def
    M runtime/gen/basis-ffi.h
    M runtime/gen/basis-ffi.sml

  Log Message:
  -----------
  Almost eliminate `extern struct GC_state gcState` in `Posix/signal.c`


  Commit: 55cba62f114c4abde2873523843bd2b02711f585
      https://github.com/MLton/mlton/commit/55cba62f114c4abde2873523843bd2b02711f585
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-13 (Thu, 13 Jun 2019)

  Changed paths:
    M runtime/basis/Posix/Process/fork.c
    M runtime/gc/signals.c
    M runtime/gc/signals.h

  Log Message:
  -----------
  Eliminate `extern struct GC_state gcState` in `MLton/Posix/fork.c`

It is still the case that on Darwin, a forked process does not inherit
the alternate signal stack;


  Commit: 7483eb66e1365489ea739655e6f1a6eca50d76da
      https://github.com/MLton/mlton/commit/7483eb66e1365489ea739655e6f1a6eca50d76da
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-13 (Thu, 13 Jun 2019)

  Changed paths:
    M runtime/gc/signals.c

  Log Message:
  -----------
  Simplify `initSignalStack`.


  Commit: 080daa8f5833b83c2698ade8f51c2de909076dd8
      https://github.com/MLton/mlton/commit/080daa8f5833b83c2698ade8f51c2de909076dd8
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-13 (Thu, 13 Jun 2019)

  Changed paths:
    M include/amd64-main.h
    M include/c-main.h
    M include/common-main.h
    M include/x86-main.h
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Move declaration of global `gcState` to `<cg>-main.h`.


  Commit: 0444115a9c94aaeeaf2215ad975a50748a799e01
      https://github.com/MLton/mlton/commit/0444115a9c94aaeeaf2215ad975a50748a799e01
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-13 (Thu, 13 Jun 2019)

  Changed paths:
    M include/amd64-main.h
    M include/c-main.h
    M include/x86-main.h
    M runtime/gc/gc_state.h

  Log Message:
  -----------
  Introduce `GC_state MLton_gcState()` to fetch the global gcState

`MLton_gcState` is used to fetch the global gcState in contexts where
it is not easily available; in particular, during program
initialization (MLton_main, LIB_OPEN), program
termination (LIB_CLOSE), program reentry (MLton_callFromC), and signal
handlers (GC_handler).

This will allow the global gcState to be a static variable allocated
by `<cg>-main.h`.  This will also help the CMU MultiMLton
project (help to minimize the diff with MLton), where `MLton_gcState`
will fetch the pthread specific `gcState`.


  Commit: ad3d221e620f9abffd181fd00ac9d5c6a5869e8c
      https://github.com/MLton/mlton/commit/ad3d221e620f9abffd181fd00ac9d5c6a5869e8c
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-13 (Thu, 13 Jun 2019)

  Changed paths:
    M runtime/basis/Posix/Signal.c
    M runtime/gc/handler.c
    M runtime/gc/handler.h

  Log Message:
  -----------
  Eliminate `extern struct GC_state gcState` in `Posix/signal.c`

Use `MLton_gcState` in `GC_handler` to fetch the global gcState.


  Commit: f12937beeae958d9ba4ea901cd698036980476e2
      https://github.com/MLton/mlton/commit/f12937beeae958d9ba4ea901cd698036980476e2
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-13 (Thu, 13 Jun 2019)

  Changed paths:
    M include/c-main.h

  Log Message:
  -----------
  Make `gcState` a static local var of `MLton_gcState` in C and LLVM codegens


  Commit: 1672f09db33d1120a693d7d54c076ecf76b3a75e
      https://github.com/MLton/mlton/commit/1672f09db33d1120a693d7d54c076ecf76b3a75e
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-06-14 (Fri, 14 Jun 2019)

  Changed paths:
    M basis-library/mlton/call-stack.sml
    M basis-library/mlton/cont.sml
    M basis-library/mlton/gc.sml
    M basis-library/mlton/profile.sml
    M basis-library/mlton/rusage.sml
    M basis-library/mlton/signal.sml
    M basis-library/mlton/thread.sml
    M basis-library/mlton/world.sml
    M basis-library/primitive/basis-ffi.sml
    M basis-library/primitive/prim-mlton.sml
    M include/amd64-main.h
    M include/c-chunk.h
    M include/c-main.h
    M include/common-main.h
    M include/x86-main.h
    M mlton/atoms/prim.fun
    M mlton/atoms/prim.sig
    M mlton/backend/rep-type.fun
    M mlton/backend/runtime.fun
    M mlton/backend/runtime.sig
    M mlton/backend/ssa2-to-rssa.fun
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/main/compile.fun
    M mlton/main/lookup-constant.fun
    M runtime/basis-ffi.h
    M runtime/basis/MLton/Rusage/rusage.c
    M runtime/basis/Posix/Process/fork.c
    M runtime/basis/Posix/Signal.c
    M runtime/gc/gc_state.h
    M runtime/gc/handler.c
    M runtime/gc/handler.h
    M runtime/gc/signals.c
    M runtime/gc/signals.h
    M runtime/gen/basis-ffi.def
    M runtime/gen/basis-ffi.h
    M runtime/gen/basis-ffi.sml
    M runtime/platform.h

  Log Message:
  -----------
  Merge pull request #318 from MatthewFluet/gcstate-fields-and-prim

Update use of global `struct GC_state` in compiler and Basis Library

Simplify how the compiler proper and the Basis Library use the global
`struct GC_state`.  One motivation for these changes is to minimize
the diff between MLton and the CMU MultiMLton project.

Highlights:
* Eliminate unused `Runtime.CurrentThread` and `Runtime.MaxFrameSize`
  in `structure BackendAtoms` (e0cbba9d2, 6a0a23206).
* Introduce `GC_state` primitive, translated to `GCState` RSSA operand
  (d49793585), which is used instead of `_symbol "gcStateAddress"` in
  the Basis Library implementation (4fe198c25, 92b532131).
* Eliminate `extern struct GC_state gcState` in `runtime/basis/`
  (4bcae43ee, f7b0d35f1, 55cba62f1, ad3d221e6).
* Introduce `GC_state MLton_gcState()` to fetch the global `struct
  GC_state` (0444115a9).


Compare: https://github.com/MLton/mlton/compare/324b32c16865...1672f09db33d

[MLton-commit] [MLton/mlton] 6ac37e: Fixup `Ssa.Transfer.equals` (broken in 9c5082f6)

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: 6ac37e58d62d25a482e937ebb5d1be610019dacd
      https://github.com/MLton/mlton/commit/6ac37e58d62d25a482e937ebb5d1be610019dacd
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-10 (Mon, 10 Jun 2019)

  Changed paths:
    M mlton/ssa/ssa-tree.fun

  Log Message:
  -----------
  Fixup `Ssa.Transfer.equals` (broken in 9c5082f6)


  Commit: 324b32c16865ed41b36b5a4e99ac6c38114a679e
      https://github.com/MLton/mlton/commit/324b32c16865ed41b36b5a4e99ac6c38114a679e
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-06-10 (Mon, 10 Jun 2019)

  Changed paths:
    M mlton/ssa/ssa-tree.fun

  Log Message:
  -----------
  Merge pull request #317 from MatthewFluet/ssa-transfer-equals-fixup

Fixup `Ssa.Transfer.equals` (broken in 9c5082f6)


Compare: https://github.com/MLton/mlton/compare/ec7712667983...324b32c16865

[MLton-commit] [MLton/mlton] 527516: Fixup `Ssa2.Program.toFile` suffix

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: 527516780ec147e8fbbefac75e883c51caad9492
      https://github.com/MLton/mlton/commit/527516780ec147e8fbbefac75e883c51caad9492
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-09 (Sun, 09 Jun 2019)

  Changed paths:
    M mlton/ssa/ssa-tree2.fun

  Log Message:
  -----------
  Fixup `Ssa2.Program.toFile` suffix


  Commit: ec771266798313e5ec8f5837cbc766b8b84847f6
      https://github.com/MLton/mlton/commit/ec771266798313e5ec8f5837cbc766b8b84847f6
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-06-09 (Sun, 09 Jun 2019)

  Changed paths:
    M mlton/ssa/ssa-tree2.fun

  Log Message:
  -----------
  Merge pull request #316 from MatthewFluet/ssa2-toFile-fixup

Fixup `Ssa2.Program.toFile` suffix


Compare: https://github.com/MLton/mlton/compare/642a2f56f4a1...ec7712667983

[MLton-commit] [MLton/mlton] 474a07: Fixup `functor RSSA`

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: 474a071e8fcd27539bb9ce3059ffeca080dc2714
      https://github.com/MLton/mlton/commit/474a071e8fcd27539bb9ce3059ffeca080dc2714
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/backend/rssa.fun

  Log Message:
  -----------
  Fixup `functor RSSA`


  Commit: 642a2f56f4a1e8cfd522ff7f4af69fcaa6faf2ec
      https://github.com/MLton/mlton/commit/642a2f56f4a1e8cfd522ff7f4af69fcaa6faf2ec
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/backend/rssa.fun

  Log Message:
  -----------
  Merge pull request #315 from MatthewFluet/rssa-fixup

Fixup `functor RSSA`


Compare: https://github.com/MLton/mlton/compare/1f3c6fa37e99...642a2f56f4a1

[MLton-commit] [MLton/mlton] baf74e: Update copyright date in license

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: baf74ef67594354f91cf817ed74414da19aa7fb8
      https://github.com/MLton/mlton/commit/baf74ef67594354f91cf817ed74414da19aa7fb8
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M LICENSE

  Log Message:
  -----------
  Update copyright date in license


  Commit: dd6225e97fabf8d1a5abb73d316d52ca9a7fc447
      https://github.com/MLton/mlton/commit/dd6225e97fabf8d1a5abb73d316d52ca9a7fc447
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M CHANGELOG.adoc

  Log Message:
  -----------
  Update CHANGELOG.adoc


  Commit: 1f3c6fa37e993a236564fe74767f2aa0ae61e538
      https://github.com/MLton/mlton/commit/1f3c6fa37e993a236564fe74767f2aa0ae61e538
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M CHANGELOG.adoc
    M LICENSE

  Log Message:
  -----------
  Merge pull request #314 from MatthewFluet/doc-updates

Update copyright date in license and update CHANGELOG.adoc


Compare: https://github.com/MLton/mlton/compare/5afdfec9e6e3...1f3c6fa37e99

[MLton-commit] [MLton/mlton] 3e203f: Add `Program.toFile` to ILs to consolidate `Contro...

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: 3e203f30f3c7afbab5a7d327026d1b0b6d443c87
      https://github.com/MLton/mlton/commit/3e203f30f3c7afbab5a7d327026d1b0b6d443c87
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-04 (Tue, 04 Jun 2019)

  Changed paths:
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/backend/rssa.fun
    M mlton/backend/rssa.sig
    M mlton/core-ml/core-ml.fun
    M mlton/core-ml/core-ml.sig
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree.sig
    M mlton/ssa/ssa-tree2.fun
    M mlton/ssa/ssa-tree2.sig
    M mlton/xml/sxml.fun
    M mlton/xml/xml-tree.fun
    M mlton/xml/xml-tree.sig

  Log Message:
  -----------
  Add `Program.toFile` to ILs to consolidate `Control.saveToFile` args


  Commit: 204b916f3561074cf08c012337ea1eecee9b6316
      https://github.com/MLton/mlton/commit/204b916f3561074cf08c012337ea1eecee9b6316
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-04 (Tue, 04 Jun 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/control/control.sig
    M mlton/control/control.sml
    M mlton/main/compile.fun
    M mlton/ssa/simplify.fun
    M mlton/ssa/simplify2.fun
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree2.fun
    M mlton/xml/polyvariance.fun
    M mlton/xml/sxml-simplify.fun
    M mlton/xml/xml-simplify.fun

  Log Message:
  -----------
  Use `toFile` in `Control.{maybeSaveToFile,pass,passTypeCheck,saveToFile}`


  Commit: e32588cc63b0f401069e1a868baa7e9dc58edbcb
      https://github.com/MLton/mlton/commit/e32588cc63b0f401069e1a868baa7e9dc58edbcb
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-04 (Tue, 04 Jun 2019)

  Changed paths:
    M mlton/control/control.sig
    M mlton/control/control.sml

  Log Message:
  -----------
  Add `Control.simplePass`

This captures the common case of a pass that respects `-keep-pass` and
`-{enable,disable}-pass` flags.  In the future, we may extend this to
respect a `-stop-pass` flag.


  Commit: 7bc8145987dab7881e297f7bae9c1c7c94a2482f
      https://github.com/MLton/mlton/commit/7bc8145987dab7881e297f7bae9c1c7c94a2482f
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-04 (Tue, 04 Jun 2019)

  Changed paths:
    M mlton/control/control.sig
    M mlton/control/control.sml

  Log Message:
  -----------
  Add `Control.simplePasses`

This captures the common case of a simplify pass that executes a
sequence of passes.


  Commit: 5d3d0c6077f0e41f50cb283bd8f8c446168bc01d
      https://github.com/MLton/mlton/commit/5d3d0c6077f0e41f50cb283bd8f8c446168bc01d
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-04 (Tue, 04 Jun 2019)

  Changed paths:
    M mlton/ssa/simplify.fun

  Log Message:
  -----------
  Implement `SSA.simplify` with `Control.simplePasses`


  Commit: d8e4e2e3efcefe9f5f30544e0098554a8677e9de
      https://github.com/MLton/mlton/commit/d8e4e2e3efcefe9f5f30544e0098554a8677e9de
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-04 (Tue, 04 Jun 2019)

  Changed paths:
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun
    M mlton/ssa/simplify.fun

  Log Message:
  -----------
  Remove `-loop-ssa-passes <n>` expert option


  Commit: 8df74630cf36b4b92e5291cbafafe28c0543bd64
      https://github.com/MLton/mlton/commit/8df74630cf36b4b92e5291cbafafe28c0543bd64
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-04 (Tue, 04 Jun 2019)

  Changed paths:
    M mlton/ssa/simplify2.fun

  Log Message:
  -----------
  Implement `SSA2.simplify` with `Control.simplePasses`


  Commit: db3cfc61c0d022f6ac0fafd5c2fcdb830fdaf327
      https://github.com/MLton/mlton/commit/db3cfc61c0d022f6ac0fafd5c2fcdb830fdaf327
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-04 (Tue, 04 Jun 2019)

  Changed paths:
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun
    M mlton/ssa/simplify2.fun

  Log Message:
  -----------
  Remove `-loop-ssa-passes <n>` expert option


  Commit: 8b210333976187e8e81455a73519396836928c02
      https://github.com/MLton/mlton/commit/8b210333976187e8e81455a73519396836928c02
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-04 (Tue, 04 Jun 2019)

  Changed paths:
    M mlton/xml/sxml-simplify.fun

  Log Message:
  -----------
  Implement `Sxml.simplify` with `Control.simplePasses`


  Commit: c8461cb184e806b214ff2ea7afe667f8f8066a52
      https://github.com/MLton/mlton/commit/c8461cb184e806b214ff2ea7afe667f8f8066a52
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-04 (Tue, 04 Jun 2019)

  Changed paths:
    M mlton/xml/xml-simplify.fun

  Log Message:
  -----------
  Implement `Xml.simplify` with `Control.simplePasses`


  Commit: 45ce6b3bcdfef4e320b8fec23d7980f5a58482a7
      https://github.com/MLton/mlton/commit/45ce6b3bcdfef4e320b8fec23d7980f5a58482a7
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-04 (Tue, 04 Jun 2019)

  Changed paths:
    M mlton/backend/backend.fun

  Log Message:
  -----------
  Implement `rssaSimplify` with `Control.simplePasses`


  Commit: 0f72cfc58db54d1aeebd8d48468c0f06f6691aa9
      https://github.com/MLton/mlton/commit/0f72cfc58db54d1aeebd8d48468c0f06f6691aa9
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-04 (Tue, 04 Jun 2019)

  Changed paths:
    M mlton/backend/rssa.fun
    M mlton/control/control.sml
    M mlton/ssa/simplify.fun
    M mlton/ssa/simplify2.fun
    M mlton/ssa/type-check.fun
    M mlton/ssa/type-check2.fun
    M mlton/xml/sxml-simplify.fun
    M mlton/xml/type-check.fun
    M mlton/xml/xml-simplify.fun

  Log Message:
  -----------
  Eliminate redundant `typeCheck` tracing


  Commit: 26d0181a97338f48751705384ddf42b211fb26ec
      https://github.com/MLton/mlton/commit/26d0181a97338f48751705384ddf42b211fb26ec
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-04 (Tue, 04 Jun 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/main/compile.fun

  Log Message:
  -----------
  Implement `{xml,sxml,ssa,ssa2,rssa}Simplify` passes with `Control.simplePass`


  Commit: b916394bd15edcb149418857ce9dadc288861a0e
      https://github.com/MLton/mlton/commit/b916394bd15edcb149418857ce9dadc288861a0e
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-05 (Wed, 05 Jun 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig

  Log Message:
  -----------
  Separate `machineSimplify` pass from `toMachine` pass


  Commit: ca2eaa77e56c2f7935a1fe34e18ea047b9d624dd
      https://github.com/MLton/mlton/commit/ca2eaa77e56c2f7935a1fe34e18ea047b9d624dd
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-05 (Wed, 05 Jun 2019)

  Changed paths:
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/elaborate/elaborate-env.fun
    M mlton/main/compile.fun
    M mlton/main/main.fun

  Log Message:
  -----------
  Eliminate `ControlFlags.elaborateOnly`

The `elaborateOnly` flag was initialized by

    stop = Place.TypeCheck
    andalso not (warnMatch)
    andalso not (!keepDefUse)

However, in order for `warnMatch` to be `false`, all of the match
warnings must be ignored and disabled, which is not typical.
Similarly, in order for `!keepDefUse` to be `false`, the `warnUnused`
annotation must be disabled, which is not typical.

It seems that there is little to be gained by trying to optimize the
`elaborateOnly` path.


  Commit: c94abd1e18f5e634f480c0bee5786b54c868eac7
      https://github.com/MLton/mlton/commit/c94abd1e18f5e634f480c0bee5786b54c868eac7
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-05 (Wed, 05 Jun 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/rssa.fun

  Log Message:
  -----------
  Incorporate `Rssa.Program.checkHandlers` into `Rssa.Program.typeCheck`


  Commit: 50180c8e0c685ca9b6705a2476c07c83635409c1
      https://github.com/MLton/mlton/commit/50180c8e0c685ca9b6705a2476c07c83635409c1
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-05 (Wed, 05 Jun 2019)

  Changed paths:
    M mlton/control/control.sml
    M mlton/main/main.fun

  Log Message:
  -----------
  Avoid redundant exception history when tracing passes


  Commit: ba64a743591549c89a9b6f2b303311459d3996fa
      https://github.com/MLton/mlton/commit/ba64a743591549c89a9b6f2b303311459d3996fa
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-05 (Wed, 05 Jun 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/machine.fun
    M mlton/control/control.sig
    M mlton/control/control.sml
    M mlton/main/compile.fun
    M mlton/ssa/simplify.fun
    M mlton/ssa/simplify2.fun
    M mlton/xml/sxml-simplify.fun
    M mlton/xml/xml-simplify.fun

  Log Message:
  -----------
  Rename `Control.simplePass{,es}` to `Control.simplifyPass{,es}`


  Commit: c317c1154fcf265a6dba7742d43d3a83d25c1ac2
      https://github.com/MLton/mlton/commit/c317c1154fcf265a6dba7742d43d3a83d25c1ac2
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-05 (Wed, 05 Jun 2019)

  Changed paths:
    M mlton/control/control.sig
    M mlton/control/control.sml

  Log Message:
  -----------
  Add `Control.translatePass`


  Commit: 023cc5fd527286b35ed2e21e6be4db5c099016e6
      https://github.com/MLton/mlton/commit/023cc5fd527286b35ed2e21e6be4db5c099016e6
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-05 (Wed, 05 Jun 2019)

  Changed paths:
    M mlton/control/control.sml

  Log Message:
  -----------
  Move `save`, `typeCheck`, and `stats` messages into pass trace


  Commit: 1b119b1490b73ad0a190bfe776d29ed02208211d
      https://github.com/MLton/mlton/commit/1b119b1490b73ad0a190bfe776d29ed02208211d
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-05 (Wed, 05 Jun 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/control/control.sig
    M mlton/control/control.sml
    M mlton/main/compile.fun
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree2.fun

  Log Message:
  -----------
  Only display `save <file>.dot` messages at `-verbose 3`


  Commit: e3b244653e9288d5282b38e76d83f053c744c66d
      https://github.com/MLton/mlton/commit/e3b244653e9288d5282b38e76d83f053c744c66d
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-05 (Wed, 05 Jun 2019)

  Changed paths:
    M mlton/ssa/simplify.fun
    M mlton/ssa/simplify2.fun
    M mlton/xml/sxml-simplify.fun
    M mlton/xml/xml-simplify.fun

  Log Message:
  -----------
  Distinguish type-checking of initial and final {XML,SXML,SSA,SSA2} programs


  Commit: a8f458f95c7e66548e037e77e6578ec66e5c1a08
      https://github.com/MLton/mlton/commit/a8f458f95c7e66548e037e77e6578ec66e5c1a08
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-05 (Wed, 05 Jun 2019)

  Changed paths:
    M mlton/control/control.sig
    M mlton/control/control.sml

  Log Message:
  -----------
  Make `Control.translatePass`'s `tgtTypeCheck` field optional


  Commit: 42d216e595fbc5a6d354e4a72f0454ec3b38d09c
      https://github.com/MLton/mlton/commit/42d216e595fbc5a6d354e4a72f0454ec3b38d09c
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-05 (Wed, 05 Jun 2019)

  Changed paths:
    M mlton/control/control.sig
    M mlton/control/control.sml

  Log Message:
  -----------
  Add `Control.composeToFile`


  Commit: a473e18eb42801b249a7e9a2ca39a4b175614970
      https://github.com/MLton/mlton/commit/a473e18eb42801b249a7e9a2ca39a4b175614970
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-05 (Wed, 05 Jun 2019)

  Changed paths:
    M mlton/core-ml/core-ml.fun

  Log Message:
  -----------
  Tweak `CoreML.Program.layouts`


  Commit: 9857bcdce31a8a2087f41845822c3a1cd34838ce
      https://github.com/MLton/mlton/commit/9857bcdce31a8a2087f41845822c3a1cd34838ce
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-05 (Wed, 05 Jun 2019)

  Changed paths:
    M mlton/xml/polyvariance.fun

  Log Message:
  -----------
  Use `Control.simplifyPass` for "duplicate<n>" pass of polyvariance


  Commit: 4e34c3e5c0c361eb5f4f2000be30828f986bd978
      https://github.com/MLton/mlton/commit/4e34c3e5c0c361eb5f4f2000be30828f986bd978
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-05 (Wed, 05 Jun 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/main/compile.fun

  Log Message:
  -----------
  Replace uses of `Control.passTypeCheck` with `Control.translatePass`


  Commit: 2d83e1752e76dba86a723ca6d720f94d23095f5e
      https://github.com/MLton/mlton/commit/2d83e1752e76dba86a723ca6d720f94d23095f5e
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-06 (Thu, 06 Jun 2019)

  Changed paths:
    M mlton/control/control.sig
    M mlton/control/control.sml
    M mlton/main/compile.fun
    M mlton/main/main.fun

  Log Message:
  -----------
  Distinguish different kinds of pass termination


  Commit: 5d9ffe930ae80eb6b944e3c51dd65f8f66e33730
      https://github.com/MLton/mlton/commit/5d9ffe930ae80eb6b944e3c51dd65f8f66e33730
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-06 (Thu, 06 Jun 2019)

  Changed paths:
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/control/control.sml
    M mlton/main/main.fun

  Log Message:
  -----------
  Add `-stop-pass <pass>` compile-time argument to stop after pass


  Commit: 6b17a4ee89da35931e42d003c364d768b2818b30
      https://github.com/MLton/mlton/commit/6b17a4ee89da35931e42d003c364d768b2818b30
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-06 (Thu, 06 Jun 2019)

  Changed paths:
    M mlton/elaborate/elaborate-env.sig

  Log Message:
  -----------
  Alphabetize specs in `signature ELABORATE_ENV`


  Commit: c338a573637012d2f7f261eb16291b8eb5ffe678
      https://github.com/MLton/mlton/commit/c338a573637012d2f7f261eb16291b8eb5ffe678
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-06 (Thu, 06 Jun 2019)

  Changed paths:
    M mlton/elaborate/elaborate-env.fun

  Log Message:
  -----------
  Trace `processDefUse` at `-verbose 3`


  Commit: 2bc54718b788cd4b6a3265dc6387f0c204baf5f2
      https://github.com/MLton/mlton/commit/2bc54718b788cd4b6a3265dc6387f0c204baf5f2
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-06 (Thu, 06 Jun 2019)

  Changed paths:
    M mlton/elaborate/elaborate-env.fun
    M mlton/elaborate/elaborate-env.sig
    M mlton/elaborate/elaborate-modules.fun
    M mlton/main/compile.fun

  Log Message:
  -----------
  Add `ElaborateEnv.showBasis` to replace `ElaborateEnv.output`


  Commit: 6144fd1bd81f7927bf598b4c8ba61dbe3a6960d8
      https://github.com/MLton/mlton/commit/6144fd1bd81f7927bf598b4c8ba61dbe3a6960d8
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-06 (Thu, 06 Jun 2019)

  Changed paths:
    M mlton/main/compile.fun

  Log Message:
  -----------
  Perform `showBasis` and `processDefUse` within `parseAndElaborateMLB`


  Commit: 23baeef04a1e53bff4ddc70c4ca991c7f4ecb391
      https://github.com/MLton/mlton/commit/23baeef04a1e53bff4ddc70c4ca991c7f4ecb391
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-06 (Thu, 06 Jun 2019)

  Changed paths:
    M mlton/atoms/ffi.fun
    M mlton/atoms/ffi.sig
    M mlton/main/compile.fun

  Log Message:
  -----------
  Perform `exportHeader` within `parseAndElaborateMLB`


  Commit: a96bbb76c2239dd3bead7acaf48a79227cf8c735
      https://github.com/MLton/mlton/commit/a96bbb76c2239dd3bead7acaf48a79227cf8c735
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-06 (Thu, 06 Jun 2019)

  Changed paths:
    M mlton/main/compile.fun

  Log Message:
  -----------
  Simplify `Compile.elaborate`


  Commit: 97f399a552b36d5470caa799522e63f231b180d1
      https://github.com/MLton/mlton/commit/97f399a552b36d5470caa799522e63f231b180d1
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/main/compile.fun

  Log Message:
  -----------
  Refactor conversion from input file names to `MLBString.t`s


  Commit: 9f9925fb851ce1699be33d289e1ae2e097b5030a
      https://github.com/MLton/mlton/commit/9f9925fb851ce1699be33d289e1ae2e097b5030a
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/main/compile.fun

  Log Message:
  -----------
  Consolidate calls of `setupConstants` in `makeMachine`

Runtime constants only need to be set for backend passes.


  Commit: d2dcf2774b52b9040db85a0fcfc4af9e8c670958
      https://github.com/MLton/mlton/commit/d2dcf2774b52b9040db85a0fcfc4af9e8c670958
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/main/compile.fun

  Log Message:
  -----------
  Tweak codegen pass names


  Commit: e4fea33a41ba4f49cf40d73c3d073fa02184f498
      https://github.com/MLton/mlton/commit/e4fea33a41ba4f49cf40d73c3d073fa02184f498
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/backend/rssa.fun
    M mlton/control/control.sig
    M mlton/control/control.sml
    M mlton/core-ml/core-ml.fun
    M mlton/core-ml/core-ml.sig
    M mlton/main/compile.fun
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree2.fun
    M mlton/xml/sxml.fun
    M mlton/xml/xml-tree.fun
    M mlton/xml/xml-tree.sig

  Log Message:
  -----------
  Make `tgtStats` and `tgtToFile` optional in `Control.translatePass`

Also, move display of IL program sizes to corresponding `layoutStats`
functions.  Makes it cleaner to distinguish tgts that have no
reasonable size.


  Commit: 6547f3a933a09b2961016897bf34c6603a6f2ab9
      https://github.com/MLton/mlton/commit/6547f3a933a09b2961016897bf34c6603a6f2ab9
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/control/control.sig
    M mlton/control/control.sml

  Log Message:
  -----------
  Eliminate unused `Control.NoDisplay`


  Commit: b0a30b954ee2288014bcff4c8cb762eb6e3bf432
      https://github.com/MLton/mlton/commit/b0a30b954ee2288014bcff4c8cb762eb6e3bf432
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/main/compile.fun
    M mlton/main/compile.sig

  Log Message:
  -----------
  Begin to simplify `Compile: COMPILE` interface for IL frontends


  Commit: d6ac0b5540f73f030c3c13296f46e126f8180349
      https://github.com/MLton/mlton/commit/d6ac0b5540f73f030c3c13296f46e126f8180349
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/main/main.fun

  Log Message:
  -----------
  Eliminate special case of show Basis Library basis on no inputs


  Commit: 5ba39d6cd1b626318b237fd615f96ce0d587a258
      https://github.com/MLton/mlton/commit/5ba39d6cd1b626318b237fd615f96ce0d587a258
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/main/compile.fun
    M mlton/main/compile.sig
    M mlton/main/main.fun

  Log Message:
  -----------
  Propagate assumption that compilation is always of a single SML file


  Commit: 061614e3d89bcd8d5cdc2ad59ae05121bdffd143
      https://github.com/MLton/mlton/commit/061614e3d89bcd8d5cdc2ad59ae05121bdffd143
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/main/compile.fun
    M mlton/main/compile.sig

  Log Message:
  -----------
  Continue to simplify `Compile: COMPILE` interface for IL frontends


  Commit: 857930b6ec8a2b18c81a09a55c10627e574c6cfa
      https://github.com/MLton/mlton/commit/857930b6ec8a2b18c81a09a55c10627e574c6cfa
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/main/main.fun

  Log Message:
  -----------
  Use simplified interface to `Compile: COMPILE` in `Main: MAIN`


  Commit: d690eb607973acfcad77b3c67042a47938d6a565
      https://github.com/MLton/mlton/commit/d690eb607973acfcad77b3c67042a47938d6a565
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/main/compile.fun
    M mlton/main/compile.sig

  Log Message:
  -----------
  Remove superseded interface in `Compile: COMPILE`


  Commit: 4877088f570edab4e8f8b918caab48423b9b405f
      https://github.com/MLton/mlton/commit/4877088f570edab4e8f8b918caab48423b9b405f
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/control/control.sig
    M mlton/control/control.sml

  Log Message:
  -----------
  Eliminate unused `Control.pass{,TypeCheck}`


  Commit: b59a520e228148cd90ef8de6b1123b067b1044aa
      https://github.com/MLton/mlton/commit/b59a520e228148cd90ef8de6b1123b067b1044aa
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/control/control.sig
    M mlton/control/control.sml
    M mlton/main/compile.fun
    M mlton/xml/polyvariance.fun

  Log Message:
  -----------
  Incorporate keeping of (final) IL into `Control.{translate,simplify}Pass`


  Commit: 9bbf5328c30794a1ec69ab280e0f8575cb8d3b64
      https://github.com/MLton/mlton/commit/9bbf5328c30794a1ec69ab280e0f8575cb8d3b64
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    A mlton/backend/backend-atoms.fun
    A mlton/backend/backend-atoms.sig
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb
    M mlton/main/compile.fun

  Log Message:
  -----------
  Introduce `BackendAtoms: BACKEND_ATOMS`

This initiates a refactoring to break up the monolithic `functor
Backend`.


  Commit: dccf9415b3d4e10a6665924f6e868539f48d7639
      https://github.com/MLton/mlton/commit/dccf9415b3d4e10a6665924f6e868539f48d7639
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/backend/allocate-registers.fun
    M mlton/backend/backend-atoms.sig
    M mlton/backend/backend.fun
    M mlton/backend/bounce-vars.fun
    M mlton/backend/implement-handlers.fun
    M mlton/backend/implement-profiling.fun
    M mlton/backend/limit-check.fun
    R mlton/backend/live.fun
    R mlton/backend/live.sig
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    R mlton/backend/restore.fun
    R mlton/backend/restore.sig
    A mlton/backend/rssa-live.fun
    A mlton/backend/rssa-live.sig
    A mlton/backend/rssa-restore.fun
    A mlton/backend/rssa-restore.sig
    A mlton/backend/rssa-simplify.fun
    A mlton/backend/rssa-simplify.sig
    M mlton/backend/rssa-transform.sig
    A mlton/backend/rssa-tree.fun
    A mlton/backend/rssa-tree.sig
    M mlton/backend/rssa.fun
    M mlton/backend/rssa.sig
    M mlton/backend/signal-check.fun
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb

  Log Message:
  -----------
  Refactor RSSA IL along the lines of the SSA and SSA2 ILs


  Commit: 182620eb9bada919d11f2769b5a3975fdca35f4a
      https://github.com/MLton/mlton/commit/182620eb9bada919d11f2769b5a3975fdca35f4a
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/backend/allocate-registers.sig
    M mlton/backend/backend-atoms.sig
    M mlton/backend/backend.fun
    M mlton/backend/backend.sig
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb
    M mlton/main/compile.fun

  Log Message:
  -----------
  Split monolithic `Backend.backend` pass

Now, `Compile.compile` separately invokes `toRssa`, `rssaSimplify`,
`backend` (aka, `toMachine`), `machineSimplicy`.


  Commit: 64f7467e0178af6352e786621f7b28e558e6874e
      https://github.com/MLton/mlton/commit/64f7467e0178af6352e786621f7b28e558e6874e
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/control/control.sig
    M mlton/control/control.sml

  Log Message:
  -----------
  Eliminate unused `Control.composeToFile`


  Commit: 15be9a97ea18ba6532a17c4b63cc4f1beeb5f715
      https://github.com/MLton/mlton/commit/15be9a97ea18ba6532a17c4b63cc4f1beeb5f715
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/control/control.sig
    M mlton/control/control.sml

  Log Message:
  -----------
  Simplify `Control.maybeSaveToFile`.


  Commit: 1f2e1eaf7072661a1b8d265694be987ff5fcb27b
      https://github.com/MLton/mlton/commit/1f2e1eaf7072661a1b8d265694be987ff5fcb27b
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/control/control.sml

  Log Message:
  -----------
  Extend `-keep-pass <re>` to check against `<name>{,pre,post}`

For example, `-keep-pass polyEqual.post` will only save
`z.polyEqual.post.ssa`, without also saving `z.polyEqual.pre.ssa`.


  Commit: 7cc0d6d21144a645b382b5dc5a4f9945464814f5
      https://github.com/MLton/mlton/commit/7cc0d6d21144a645b382b5dc5a4f9945464814f5
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/control/control.sml

  Log Message:
  -----------
  Respect `-keep <il>` and `-stop-pass <re>` with `-disable-pass <re>`


  Commit: 93f671daa56c7bc306d8120571f4ed7d61030555
      https://github.com/MLton/mlton/commit/93f671daa56c7bc306d8120571f4ed7d61030555
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/control/control.sml

  Log Message:
  -----------
  Code formatting


  Commit: 03f8d39b8adab21b9a90ffbe65af5444efa68a77
      https://github.com/MLton/mlton/commit/03f8d39b8adab21b9a90ffbe65af5444efa68a77
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/backend/packed-representation.fun
    M mlton/backend/representation.sig
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb
    R mlton/backend/ssa-to-rssa.fun
    R mlton/backend/ssa-to-rssa.sig
    A mlton/backend/ssa2-to-rssa.fun
    A mlton/backend/ssa2-to-rssa.sig
    M mlton/main/compile.fun

  Log Message:
  -----------
  Rename `SsaToRssa` to `Ssa2ToRssa`


  Commit: 5afdfec9e6e3572b5ac69b66eef8e2603df3947f
      https://github.com/MLton/mlton/commit/5afdfec9e6e3572b5ac69b66eef8e2603df3947f
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-06-07 (Fri, 07 Jun 2019)

  Changed paths:
    M mlton/atoms/ffi.fun
    M mlton/atoms/ffi.sig
    M mlton/backend/allocate-registers.fun
    M mlton/backend/allocate-registers.sig
    A mlton/backend/backend-atoms.fun
    A mlton/backend/backend-atoms.sig
    M mlton/backend/backend.fun
    M mlton/backend/backend.sig
    M mlton/backend/bounce-vars.fun
    M mlton/backend/implement-handlers.fun
    M mlton/backend/implement-profiling.fun
    M mlton/backend/limit-check.fun
    R mlton/backend/live.fun
    R mlton/backend/live.sig
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/backend/packed-representation.fun
    M mlton/backend/representation.sig
    R mlton/backend/restore.fun
    R mlton/backend/restore.sig
    A mlton/backend/rssa-live.fun
    A mlton/backend/rssa-live.sig
    A mlton/backend/rssa-restore.fun
    A mlton/backend/rssa-restore.sig
    A mlton/backend/rssa-simplify.fun
    A mlton/backend/rssa-simplify.sig
    M mlton/backend/rssa-transform.sig
    A mlton/backend/rssa-tree.fun
    A mlton/backend/rssa-tree.sig
    M mlton/backend/rssa.fun
    M mlton/backend/rssa.sig
    M mlton/backend/signal-check.fun
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb
    R mlton/backend/ssa-to-rssa.fun
    R mlton/backend/ssa-to-rssa.sig
    A mlton/backend/ssa2-to-rssa.fun
    A mlton/backend/ssa2-to-rssa.sig
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/control/control.sig
    M mlton/control/control.sml
    M mlton/core-ml/core-ml.fun
    M mlton/core-ml/core-ml.sig
    M mlton/elaborate/elaborate-env.fun
    M mlton/elaborate/elaborate-env.sig
    M mlton/elaborate/elaborate-modules.fun
    M mlton/main/compile.fun
    M mlton/main/compile.sig
    M mlton/main/main.fun
    M mlton/ssa/simplify.fun
    M mlton/ssa/simplify2.fun
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree.sig
    M mlton/ssa/ssa-tree2.fun
    M mlton/ssa/ssa-tree2.sig
    M mlton/ssa/type-check.fun
    M mlton/ssa/type-check2.fun
    M mlton/xml/polyvariance.fun
    M mlton/xml/sxml-simplify.fun
    M mlton/xml/sxml.fun
    M mlton/xml/type-check.fun
    M mlton/xml/xml-simplify.fun
    M mlton/xml/xml-tree.fun
    M mlton/xml/xml-tree.sig

  Log Message:
  -----------
  Merge pull request #313 from MatthewFluet/pass-refactor

Refactor pass infrastructure and backend.

Highlights:
* Extend `-keep-pass <pass>` and `-disable-pass <pass>` to more
  passes; for example, the former can be applied to `closureConvert`
  and both can be applied to `ssaSimplify`.
* Avoid redundant exception history when tracing passes (50180c8e0).
* Distinguish different kinds of pass termination (2d83e1752).
* Add `-stop-pass <pass>` to terminate compilation after a pass
  (5d9ffe930).
* Simplify `structure Compile: COMPILE` interface for IL frontend
  (b0a30b954, 061614e3d, 857930b6e).
* Split monolithic `Backend.backend` pass; now, `Compile.compile`
  separately invokes `toRssa`, `rssaSimplify`, `backend` (aka,
  `toMachine`), `machineSimplify` (182620eb9).
* Other improvements to pass tracing messages.


Compare: https://github.com/MLton/mlton/compare/908e25d59e03...5afdfec9e6e3

[MLton-commit] [MLton/mlton] a784d6: Move various Lattice functors to MLton Library

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: a784d69b3b441543ec7d05fbef977f23638a521b
      https://github.com/MLton/mlton/commit/a784d69b3b441543ec7d05fbef977f23638a521b
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-02 (Sun, 02 Jun 2019)

  Changed paths:
    A lib/mlton/lattice/flat-lattice.fun
    A lib/mlton/lattice/flat-lattice.sig
    A lib/mlton/lattice/n-point-lattice.fun
    A lib/mlton/lattice/n-point-lattice.sig
    A lib/mlton/lattice/sources.cm
    A lib/mlton/lattice/sources.mlb
    A lib/mlton/lattice/three-point-lattice.fun
    A lib/mlton/lattice/three-point-lattice.sig
    A lib/mlton/lattice/two-point-lattice.fun
    A lib/mlton/lattice/two-point-lattice.sig
    M lib/mlton/sources.cm
    M lib/mlton/sources.mlb
    R mlton/ssa/flat-lattice.fun
    R mlton/ssa/flat-lattice.sig
    R mlton/ssa/n-point-lattice.fun
    R mlton/ssa/n-point-lattice.sig
    M mlton/ssa/sources.cm
    M mlton/ssa/sources.mlb
    R mlton/ssa/three-point-lattice.fun
    R mlton/ssa/three-point-lattice.sig
    R mlton/ssa/two-point-lattice.fun
    R mlton/ssa/two-point-lattice.sig

  Log Message:
  -----------
  Move various Lattice functors to MLton Library


  Commit: 256e19185efdd27fed2597c4dc7c695dbc4cb3bf
      https://github.com/MLton/mlton/commit/256e19185efdd27fed2597c4dc7c695dbc4cb3bf
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-02 (Sun, 02 Jun 2019)

  Changed paths:
    A lib/mlton/lattice/powerset-lattice.fun
    A lib/mlton/lattice/powerset-lattice.sig
    M lib/mlton/lattice/sources.cm
    M lib/mlton/lattice/sources.mlb
    M lib/mlton/sources.cm
    M lib/mlton/sources.mlb

  Log Message:
  -----------
  Add `POWERSET_LATTICE` signature and functors to MLton Library


  Commit: 8d049c65962d3b02c2f42a05286c44219e3cf8a5
      https://github.com/MLton/mlton/commit/8d049c65962d3b02c2f42a05286c44219e3cf8a5
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-03 (Mon, 03 Jun 2019)

  Changed paths:
    M mlton/backend/chunkify.fun

  Log Message:
  -----------
  Use `PowerSetLattice` to implement `Chunkify.returnsTo`


  Commit: 908e25d59e03821500ea2759601362e3ba099d2b
      https://github.com/MLton/mlton/commit/908e25d59e03821500ea2759601362e3ba099d2b
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-06-03 (Mon, 03 Jun 2019)

  Changed paths:
    A lib/mlton/lattice/flat-lattice.fun
    A lib/mlton/lattice/flat-lattice.sig
    A lib/mlton/lattice/n-point-lattice.fun
    A lib/mlton/lattice/n-point-lattice.sig
    A lib/mlton/lattice/powerset-lattice.fun
    A lib/mlton/lattice/powerset-lattice.sig
    A lib/mlton/lattice/sources.cm
    A lib/mlton/lattice/sources.mlb
    A lib/mlton/lattice/three-point-lattice.fun
    A lib/mlton/lattice/three-point-lattice.sig
    A lib/mlton/lattice/two-point-lattice.fun
    A lib/mlton/lattice/two-point-lattice.sig
    M lib/mlton/sources.cm
    M lib/mlton/sources.mlb
    M mlton/backend/chunkify.fun
    R mlton/ssa/flat-lattice.fun
    R mlton/ssa/flat-lattice.sig
    R mlton/ssa/n-point-lattice.fun
    R mlton/ssa/n-point-lattice.sig
    M mlton/ssa/sources.cm
    M mlton/ssa/sources.mlb
    R mlton/ssa/three-point-lattice.fun
    R mlton/ssa/three-point-lattice.sig
    R mlton/ssa/two-point-lattice.fun
    R mlton/ssa/two-point-lattice.sig

  Log Message:
  -----------
  Merge pull request #311 from MatthewFluet/lattice-library

Lattice functors in MLton Library

Move the various Lattice functors to MLton Library (from SSA IR) and
implement a `POWERSET_LATTICE` signature and functors.


Compare: https://github.com/MLton/mlton/compare/609b33382255...908e25d59e03

[MLton-commit] [MLton/mlton] eea538: Move `Handler: HANDLER` and `Return: RETURN` into ...

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: eea538a84f968674daefbf9cac0ab6c4eb99b230
      https://github.com/MLton/mlton/commit/eea538a84f968674daefbf9cac0ab6c4eb99b230
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-02 (Sun, 02 Jun 2019)

  Changed paths:
    M mlton/atoms/atoms.fun
    M mlton/atoms/atoms.sig
    A mlton/atoms/handler.fun
    A mlton/atoms/handler.sig
    A mlton/atoms/return.fun
    A mlton/atoms/return.sig
    M mlton/atoms/sources.cm
    M mlton/atoms/sources.mlb
    M mlton/backend/backend.fun
    M mlton/backend/rssa.sig
    M mlton/main/compile.fun
    M mlton/ssa/sources.cm
    M mlton/ssa/sources.mlb
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree.sig
    M mlton/ssa/ssa-tree2.fun
    M mlton/ssa/ssa-tree2.sig

  Log Message:
  -----------
  Move `Handler: HANDLER` and `Return: RETURN` into `Atoms: ATOMS`

The `Handler.t` and `Return.t` types are used by the SSA, SSA2, and
RSSA IRs.  Previously, `functor SsaTree` and `functor SsaTree2`
duplicated the code for `structure Handler: HANDLER` and `structure
Return: RETURN`.


  Commit: 65ec9d17ef008a28a23682ec1c3090ec00ab9c45
      https://github.com/MLton/mlton/commit/65ec9d17ef008a28a23682ec1c3090ec00ab9c45
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-02 (Sun, 02 Jun 2019)

  Changed paths:
    R mlton/atoms/cases.fun
    R mlton/atoms/cases.sig

  Log Message:
  -----------
  Delete unused files `atoms/cases.{sig,fun}`


  Commit: 4d5e670e2af78b49ad136b9a278db92595624a6f
      https://github.com/MLton/mlton/commit/4d5e670e2af78b49ad136b9a278db92595624a6f
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-02 (Sun, 02 Jun 2019)

  Changed paths:
    M mlton/atoms/atoms.fun
    M mlton/atoms/atoms.sig
    A mlton/atoms/cases.fun
    A mlton/atoms/cases.sig
    M mlton/atoms/sources.cm
    M mlton/atoms/sources.mlb
    M mlton/backend/ssa-to-rssa.fun
    M mlton/defunctorize/defunctorize.fun
    M mlton/match-compile/match-compile.fun
    M mlton/match-compile/match-compile.sig
    M mlton/ssa/loop-unswitch.fun
    M mlton/ssa/shrink.fun
    M mlton/ssa/shrink2.fun
    M mlton/ssa/ssa-to-ssa2.fun
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree.sig
    M mlton/ssa/ssa-tree2.fun
    M mlton/ssa/ssa-tree2.sig
    M mlton/xml/shrink.fun
    M mlton/xml/xml-tree.fun
    M mlton/xml/xml-tree.sig

  Log Message:
  -----------
  Move `Cases: CASES` into `Atoms: ATOMS`

The `Cases.t` type is used by the XML, SSA, and SSA2 IRS.  Previously,
`functor XmlTree`, `functor SsaTree`, and `functor SsaTree2`
duplicated the code for `structure Cases: CASES`.


  Commit: 9459f7b5bb690c81fc971582850f79c34a0e0323
      https://github.com/MLton/mlton/commit/9459f7b5bb690c81fc971582850f79c34a0e0323
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-06-02 (Sun, 02 Jun 2019)

  Changed paths:
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/backend/rep-type.sig
    M mlton/backend/rssa.sig
    R mlton/backend/scale.fun
    R mlton/backend/scale.sig
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb
    A mlton/control/scale.sml
    M mlton/control/sources.cm
    M mlton/control/sources.mlb

  Log Message:
  -----------
  Move `Scale: SCALE` to `./mlton/control/`

The `Scale.t` type is used by RSSA, Machine, and the codegens.
Furthermore, `Scale.t` is similar in spirit to `Bits.t` and `Bytes.t`,
which are also found in `./mlton/control/`.


  Commit: 609b3338225501f237962f1fefd41ace0502abea
      https://github.com/MLton/mlton/commit/609b3338225501f237962f1fefd41ace0502abea
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-06-02 (Sun, 02 Jun 2019)

  Changed paths:
    M mlton/atoms/atoms.fun
    M mlton/atoms/atoms.sig
    M mlton/atoms/cases.fun
    M mlton/atoms/cases.sig
    A mlton/atoms/handler.fun
    A mlton/atoms/handler.sig
    A mlton/atoms/return.fun
    A mlton/atoms/return.sig
    M mlton/atoms/sources.cm
    M mlton/atoms/sources.mlb
    M mlton/backend/backend.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/backend/rep-type.sig
    M mlton/backend/rssa.sig
    R mlton/backend/scale.fun
    R mlton/backend/scale.sig
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb
    M mlton/backend/ssa-to-rssa.fun
    A mlton/control/scale.sml
    M mlton/control/sources.cm
    M mlton/control/sources.mlb
    M mlton/defunctorize/defunctorize.fun
    M mlton/main/compile.fun
    M mlton/match-compile/match-compile.fun
    M mlton/match-compile/match-compile.sig
    M mlton/ssa/loop-unswitch.fun
    M mlton/ssa/shrink.fun
    M mlton/ssa/shrink2.fun
    M mlton/ssa/sources.cm
    M mlton/ssa/sources.mlb
    M mlton/ssa/ssa-to-ssa2.fun
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree.sig
    M mlton/ssa/ssa-tree2.fun
    M mlton/ssa/ssa-tree2.sig
    M mlton/xml/shrink.fun
    M mlton/xml/xml-tree.fun
    M mlton/xml/xml-tree.sig

  Log Message:
  -----------
  Merge pull request #310 from MatthewFluet/atoms-updates

Relocate structures shared by multiple IRs


Compare: https://github.com/MLton/mlton/compare/9ccfb06a97a0...609b33382255

[MLton-commit] [MLton/mlton] c4b95b: Change LoopForest to contain data rather than (nec...

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: c4b95b54cb59515d658b16b589336572432bbf37
      https://github.com/MLton/mlton/commit/c4b95b54cb59515d658b16b589336572432bbf37
  Author: Jason Carr <jca...@gm...>
  Date:   2019-01-22 (Tue, 22 Jan 2019)

  Changed paths:
    M lib/mlton/basic/directed-graph.sig
    M lib/mlton/basic/directed-graph.sml
    M mlton/backend/limit-check.fun
    M mlton/backend/signal-check.fun
    M mlton/codegen/amd64-codegen/amd64-loop-info.fun
    M mlton/codegen/x86-codegen/x86-loop-info.fun
    M mlton/ssa/loop-unroll.fun
    M mlton/ssa/loop-unswitch.fun
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree2.fun

  Log Message:
  -----------
  Change LoopForest to contain data rather than (necessarily) nodes

The interface matches Tree.t more now
This can simplify some iteration that's just passing the nodes back
through a plist by putting that iteration inside the tree creator.
So interfaces don't have to work with Nodes and we can sometimes GC the
graph a bit sooner


  Commit: 55fa1649cdba14160329f52b9f65fb5709533b18
      https://github.com/MLton/mlton/commit/55fa1649cdba14160329f52b9f65fb5709533b18
  Author: Jason Carr <jca...@gm...>
  Date:   2019-01-22 (Tue, 22 Jan 2019)

  Changed paths:
    M mlton/backend/rssa.fun
    M mlton/backend/rssa.sig

  Log Message:
  -----------
  Add public loopForest method to rssa


  Commit: 2ba849c84931d8789dcf2c76f063a261d64f8a34
      https://github.com/MLton/mlton/commit/2ba849c84931d8789dcf2c76f063a261d64f8a34
  Author: Jason Carr <jca...@gm...>
  Date:   2019-01-22 (Tue, 22 Jan 2019)

  Changed paths:
    M mlton/backend/rssa.fun
    M mlton/backend/rssa.sig

  Log Message:
  -----------
  Make loopForest less specific about the kind of transfer


  Commit: 2c1545a2ac4b8a682487d7e751f0b1257ab783b1
      https://github.com/MLton/mlton/commit/2c1545a2ac4b8a682487d7e751f0b1257ab783b1
  Author: Jason Carr <jca...@gm...>
  Date:   2019-01-22 (Tue, 22 Jan 2019)

  Changed paths:
    M mlton/backend/rssa.fun
    M mlton/backend/rssa.sig

  Log Message:
  -----------
  Fix Rssa.Function.loopForest to use Blocks in the predicate


  Commit: 4c52e0deafca992297d660cfe3ec3ce34abdb680
      https://github.com/MLton/mlton/commit/4c52e0deafca992297d660cfe3ec3ce34abdb680
  Author: Jason Carr <jca...@gm...>
  Date:   2019-01-22 (Tue, 22 Jan 2019)

  Changed paths:
    A mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Create separate-vars.fun rssa pass and move loop detection code


  Commit: dbb2c2c6c7d5ee044131d30b5cfb5b88a53516be
      https://github.com/MLton/mlton/commit/dbb2c2c6c7d5ee044131d30b5cfb5b88a53516be
  Author: Jason Carr <jca...@gm...>
  Date:   2019-01-22 (Tue, 22 Jan 2019)

  Changed paths:
    A mlton/backend/restore.fun
    M mlton/backend/rssa.fun
    M mlton/backend/rssa.sig
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb
    M mlton/ssa/sources.mlb

  Log Message:
  -----------
  Initial version of restore rssa


  Commit: c1bb15c2dcb3e6a42cdcefbb5508c47306be8034
      https://github.com/MLton/mlton/commit/c1bb15c2dcb3e6a42cdcefbb5508c47306be8034
  Author: Jason Carr <jca...@gm...>
  Date:   2019-01-22 (Tue, 22 Jan 2019)

  Changed paths:
    M mlton/backend/restore.fun
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Cleanup unused variables and disable separate-vars


  Commit: 51a89b83a77d8d9d7e8305ed6a8444a03f9bec27
      https://github.com/MLton/mlton/commit/51a89b83a77d8d9d7e8305ed6a8444a03f9bec27
  Author: Jason Carr <jca...@gm...>
  Date:   2019-01-22 (Tue, 22 Jan 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/restore.fun

  Log Message:
  -----------
  Add RestoreR structure. restoreR does not reverse function order


  Commit: 6a6a96ad9a64ed0e3120fe211a0d7cc8ec995eee
      https://github.com/MLton/mlton/commit/6a6a96ad9a64ed0e3120fe211a0d7cc8ec995eee
  Author: Jason Carr <jca...@gm...>
  Date:   2019-01-22 (Tue, 22 Jan 2019)

  Changed paths:
    M mlton/backend/restore.fun
    M mlton/ssa/sources.cm

  Log Message:
  -----------
  Fix restoreFunction to take an argument again, preventing it from accidentally having functor-level global state


  Commit: 2694e79e559409e7d00967c92c02d46f7897dee7
      https://github.com/MLton/mlton/commit/2694e79e559409e7d00967c92c02d46f7897dee7
  Author: Jason Carr <jca...@gm...>
  Date:   2019-01-22 (Tue, 22 Jan 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/restore.fun
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb

  Log Message:
  -----------
  Add signature & copyright for RestoreR


  Commit: 40539ff123981c1b8760d914a3445b11ae14bad6
      https://github.com/MLton/mlton/commit/40539ff123981c1b8760d914a3445b11ae14bad6
  Author: Jason Carr <jca...@gm...>
  Date:   2019-01-22 (Tue, 22 Jan 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Clean up unfixed rebase conflicts in separate-vars


  Commit: b89b913f2fdc7e7fbc800e431893096624704cf6
      https://github.com/MLton/mlton/commit/b89b913f2fdc7e7fbc800e431893096624704cf6
  Author: Jason Carr <jca...@gm...>
  Date:   2019-01-22 (Tue, 22 Jan 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/restore.fun
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Fix RestoreR functor signature


  Commit: 59c746c9e6ebc4638aa19263ab7cef63551b4008
      https://github.com/MLton/mlton/commit/59c746c9e6ebc4638aa19263ab7cef63551b4008
  Author: Jason Carr <jca...@gm...>
  Date:   2019-01-22 (Tue, 22 Jan 2019)

  Changed paths:
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb

  Log Message:
  -----------
  Add restore & separate-vars to sources


  Commit: 194ba5a0ae1f70fa4b10e308ef445760f21c1535
      https://github.com/MLton/mlton/commit/194ba5a0ae1f70fa4b10e308ef445760f21c1535
  Author: Jason Carr <jca...@gm...>
  Date:   2019-01-22 (Tue, 22 Jan 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Rework separate-vars a bit and start on new implementation


  Commit: 0efeac23c542bd61bead23af59fdfc4890ed9588
      https://github.com/MLton/mlton/commit/0efeac23c542bd61bead23af59fdfc4890ed9588
  Author: Jason Carr <jca...@gm...>
  Date:   2019-01-28 (Mon, 28 Jan 2019)

  Changed paths:
    M mlton/backend/rssa.sig
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Make progress on separate-vars


  Commit: ef33e23b249a862a2e7435e261ee82c70c332a02
      https://github.com/MLton/mlton/commit/ef33e23b249a862a2e7435e261ee82c70c332a02
  Author: Jason Carr <jca...@gm...>
  Date:   2019-01-31 (Thu, 31 Jan 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Add a messy separate-vars that adds appropriate moves


  Commit: ce9877574c0ee1f98d0433325017314f2f2e92a7
      https://github.com/MLton/mlton/commit/ce9877574c0ee1f98d0433325017314f2f2e92a7
  Author: Jason Carr <jca...@gm...>
  Date:   2019-01-31 (Thu, 31 Jan 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Fix seperateVars to create binds instead of moves


  Commit: c92c4b3c48a6b4f86f26247bcd70816852d4380c
      https://github.com/MLton/mlton/commit/c92c4b3c48a6b4f86f26247bcd70816852d4380c
  Author: Jason Carr <jca...@gm...>
  Date:   2019-02-03 (Sun, 03 Feb 2019)

  Changed paths:
    M mlton/backend/restore.fun
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Set types of all global variables in restoreR


  Commit: f5e5158990b13874674dc2d8aff3e3b8a27b92de
      https://github.com/MLton/mlton/commit/f5e5158990b13874674dc2d8aff3e3b8a27b92de
  Author: Jason Carr <jca...@gm...>
  Date:   2019-02-04 (Mon, 04 Feb 2019)

  Changed paths:
    M mlton/backend/rssa.fun
    M mlton/backend/switch.fun
    M mlton/backend/switch.sig

  Log Message:
  -----------
  Fix a latent missing case in Rssa.replaceLabels


  Commit: d4ae458227cf0aaaf3b182c27787cb098b9175c7
      https://github.com/MLton/mlton/commit/d4ae458227cf0aaaf3b182c27787cb098b9175c7
  Author: Jason Carr <jca...@gm...>
  Date:   2019-02-04 (Mon, 04 Feb 2019)

  Changed paths:
    M mlton/backend/restore.fun

  Log Message:
  -----------
  Use HashTable instead of HashSet in restoreR


  Commit: 071d6349b4b223bb663e7c99b352eec3ccfd7b8c
      https://github.com/MLton/mlton/commit/071d6349b4b223bb663e7c99b352eec3ccfd7b8c
  Author: Jason Carr <jca...@gm...>
  Date:   2019-02-04 (Mon, 04 Feb 2019)

  Changed paths:
    M mlton/backend/restore.fun

  Log Message:
  -----------
  Factor out rewrites of var defs and add addPost to transfer


  Commit: 6c65cfb07c751c03daa4624a47087363b97aa59c
      https://github.com/MLton/mlton/commit/6c65cfb07c751c03daa4624a47087363b97aa59c
  Author: Jason Carr <jca...@gm...>
  Date:   2019-02-04 (Mon, 04 Feb 2019)

  Changed paths:
    M mlton/backend/restore.fun

  Log Message:
  -----------
  Add handling for Arith defs in restoreR


  Commit: 3c6a9254135afaa40b105bb536b581c8bd8cbda3
      https://github.com/MLton/mlton/commit/3c6a9254135afaa40b105bb536b581c8bd8cbda3
  Author: Jason Carr <jca...@gm...>
  Date:   2019-02-04 (Mon, 04 Feb 2019)

  Changed paths:
    M mlton/backend/restore.fun

  Log Message:
  -----------
  Add some almost-correct Cont/Handler routing to restoreR


  Commit: 611203c58e2bd7033e94bc00df01d01ceadfecfd
      https://github.com/MLton/mlton/commit/611203c58e2bd7033e94bc00df01d01ceadfecfd
  Author: Jason Carr <jca...@gm...>
  Date:   2019-02-08 (Fri, 08 Feb 2019)

  Changed paths:
    A mlton/backend/restore.sig

  Log Message:
  -----------
  Add missing restore.sig


  Commit: 9c93b8d4dd8c8eeac9ef5b880049ef03308e7a91
      https://github.com/MLton/mlton/commit/9c93b8d4dd8c8eeac9ef5b880049ef03308e7a91
  Author: Jason Carr <jca...@gm...>
  Date:   2019-02-11 (Mon, 11 Feb 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Handle join points correctly in separate-vars


  Commit: 5d8a9f292e2910d2950e515febd1fb934e114e0f
      https://github.com/MLton/mlton/commit/5d8a9f292e2910d2950e515febd1fb934e114e0f
  Author: Jason Carr <jca...@gm...>
  Date:   2019-02-11 (Mon, 11 Feb 2019)

  Changed paths:
    M mlton/backend/backend.fun

  Log Message:
  -----------
  Move separate vars to before implementHandlers


  Commit: e16241bd1b52c4833897e684574f8055c75e9d6f
      https://github.com/MLton/mlton/commit/e16241bd1b52c4833897e684574f8055c75e9d6f
  Author: Jason Carr <jca...@gm...>
  Date:   2019-02-11 (Mon, 11 Feb 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/restore.fun
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Do some slight cleanup of separate-vars/restore


  Commit: fee896f50ebdf3d4405797fcc5dd76ef577f3ebc
      https://github.com/MLton/mlton/commit/fee896f50ebdf3d4405797fcc5dd76ef577f3ebc
  Author: Jason Carr <jca...@gm...>
  Date:   2019-02-11 (Mon, 11 Feb 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun

  Log Message:
  -----------
  Add options for controlling when separate-vars bounces variables


  Commit: c92db327636f1d72812772bd4f9da766450c80d7
      https://github.com/MLton/mlton/commit/c92db327636f1d72812772bd4f9da766450c80d7
  Author: Jason Carr <jca...@gm...>
  Date:   2019-02-11 (Mon, 11 Feb 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Block loops only with SML calls, not C


  Commit: f0d49f63194cb9e701d3951c00d684c93649bd4c
      https://github.com/MLton/mlton/commit/f0d49f63194cb9e701d3951c00d684c93649bd4c
  Author: Jason Carr <jca...@gm...>
  Date:   2019-02-14 (Thu, 14 Feb 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Use isMutable on bounced vars


  Commit: e5fa8f794c3cb4ab9b3b826d7b6ab53924908fb4
      https://github.com/MLton/mlton/commit/e5fa8f794c3cb4ab9b3b826d7b6ab53924908fb4
  Author: Jason Carr <jca...@gm...>
  Date:   2019-02-18 (Mon, 18 Feb 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun

  Log Message:
  -----------
  Add bounce-rssa-limit for naiive limitation of bounced vars


  Commit: 3b52a3b831daad1c3d76bff7b98464232736bc1a
      https://github.com/MLton/mlton/commit/3b52a3b831daad1c3d76bff7b98464232736bc1a
  Author: Jason Carr <jca...@gm...>
  Date:   2019-02-20 (Wed, 20 Feb 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Add a preliminary simplified separate-vars


  Commit: e51472f91cb298ec8997455e0230d79320118923
      https://github.com/MLton/mlton/commit/e51472f91cb298ec8997455e0230d79320118923
  Author: Jason Carr <jca...@gm...>
  Date:   2019-02-20 (Wed, 20 Feb 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Rewrite blocks from separateVars online; Fix avoided locations


  Commit: 53a8d3f2476010dac4bc62dace46015e10926cb3
      https://github.com/MLton/mlton/commit/53a8d3f2476010dac4bc62dace46015e10926cb3
  Author: Jason Carr <jca...@gm...>
  Date:   2019-02-25 (Mon, 25 Feb 2019)

  Changed paths:
    M mlton/backend/rssa.fun
    M mlton/backend/rssa.sig

  Log Message:
  -----------
  Add an ad-hoc bit of code to Rssa loopForest to prevent disconnectedness;


  Commit: 4c8c109cd1fba6efa9df07ef7ca0406e69e9811e
      https://github.com/MLton/mlton/commit/4c8c109cd1fba6efa9df07ef7ca0406e69e9811e
  Author: Jason Carr <jca...@gm...>
  Date:   2019-02-25 (Mon, 25 Feb 2019)

  Changed paths:
    M mlton/backend/restore.fun

  Log Message:
  -----------
  Fix RestoreR to handle Cont blocks with Handler better


  Commit: 2e8589cadb8cd89bc5d5fd00c4026957f4aa249f
      https://github.com/MLton/mlton/commit/2e8589cadb8cd89bc5d5fd00c4026957f4aa249f
  Author: Jason Carr <jca...@gm...>
  Date:   2019-03-12 (Tue, 12 Mar 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Broken - Bounce vars at loop entrance/exits


  Commit: 739915259131e7ed6ccc1c045f081708c84b7493
      https://github.com/MLton/mlton/commit/739915259131e7ed6ccc1c045f081708c84b7493
  Author: Jason Carr <jca...@gm...>
  Date:   2019-03-12 (Tue, 12 Mar 2019)

  Changed paths:
    M mlton/backend/restore.fun
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Instead, bounce vars to the same name, and fix restoreR to deal with handlers correctly


  Commit: c6a9e47b584429cd62f3b3c3e0d22b4c467f6fa4
      https://github.com/MLton/mlton/commit/c6a9e47b584429cd62f3b3c3e0d22b4c467f6fa4
  Author: Jason Carr <jca...@gm...>
  Date:   2019-03-12 (Tue, 12 Mar 2019)

  Changed paths:
    M mlton/backend/allocate-registers.fun
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Add support for bounce-rssa-limit w/ weighting


  Commit: 6ef5fc526b0cdb1973f53cac806fc4f6dfe72b6d
      https://github.com/MLton/mlton/commit/6ef5fc526b0cdb1973f53cac806fc4f6dfe72b6d
  Author: Jason Carr <jca...@gm...>
  Date:   2019-03-14 (Thu, 14 Mar 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Only consider variables that are live over a bouncing location


  Commit: be3b3305fd7629fc24db3bc5fddf1e8818eab693
      https://github.com/MLton/mlton/commit/be3b3305fd7629fc24db3bc5fddf1e8818eab693
  Author: Jason Carr <jca...@gm...>
  Date:   2019-03-14 (Thu, 14 Mar 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Add diagnostics and fuel for rewrites


  Commit: 45c82772e4105faebe6bd0086d8c9ca57868c68f
      https://github.com/MLton/mlton/commit/45c82772e4105faebe6bd0086d8c9ca57868c68f
  Author: Jason Carr <jca...@gm...>
  Date:   2019-03-14 (Thu, 14 Mar 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Improve diagnostics and accuracy of limit flag


  Commit: ddb4c113bd3b34887526cdc32132a4a2a9f413ac
      https://github.com/MLton/mlton/commit/ddb4c113bd3b34887526cdc32132a4a2a9f413ac
  Author: Jason Carr <jca...@gm...>
  Date:   2019-03-19 (Tue, 19 Mar 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Avoid bouncing at only blocks that force args to stack


  Commit: 9e3b2771326ce22ec8a42e93f9d3e4883acf214b
      https://github.com/MLton/mlton/commit/9e3b2771326ce22ec8a42e93f9d3e4883acf214b
  Author: Jason Carr <jca...@gm...>
  Date:   2019-03-28 (Thu, 28 Mar 2019)

  Changed paths:
    M mlton/backend/machine.fun
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Machine layout now includes chunk information


  Commit: cc4efa56e0b05d6044ab38e9d4aaa4b090a51971
      https://github.com/MLton/mlton/commit/cc4efa56e0b05d6044ab38e9d4aaa4b090a51971
  Author: Jason Carr <jca...@gm...>
  Date:   2019-03-28 (Thu, 28 Mar 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Record definition for separate-vars and add a much worse selection
heuristic


  Commit: 4e1d5a2c4574ffb6e8eca5ccb12225f60dc6385a
      https://github.com/MLton/mlton/commit/4e1d5a2c4574ffb6e8eca5ccb12225f60dc6385a
  Author: Jason Carr <jca...@gm...>
  Date:   2019-03-28 (Thu, 28 Mar 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Fixup the order to make it slightly less terrible


  Commit: 564e59a17bb104faee19170d348ee6a025778cc3
      https://github.com/MLton/mlton/commit/564e59a17bb104faee19170d348ee6a025778cc3
  Author: Jason Carr <ja...@ri...>
  Date:   2019-04-08 (Mon, 08 Apr 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Add more info about loops


  Commit: a48c5606f234d749fb41583621bc1147cd2dd24b
      https://github.com/MLton/mlton/commit/a48c5606f234d749fb41583621bc1147cd2dd24b
  Author: Jason Carr <ja...@ri...>
  Date:   2019-04-14 (Sun, 14 Apr 2019)

  Changed paths:
    M mlton/backend/machine.fun
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Merge branch 'register-allocation-refactor' of github.com:jasoncarr0/mlton into register-allocation-refactor


  Commit: 9d67dd5dbec2a6585f4fb2d1dc2d49d35f80d15f
      https://github.com/MLton/mlton/commit/9d67dd5dbec2a6585f4fb2d1dc2d49d35f80d15f
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-14 (Tue, 14 May 2019)

  Changed paths:
    M basis-library/primitive/basis-ffi.sml
    M basis-library/primitive/prim-basis.sml
    M basis-library/primitive/prim-int.sml
    M basis-library/primitive/prim1.sml
    M bin/regression
    M doc/guide/src/Users.adoc
    M include/c-chunk.h
    M lib/mlton/basic/char.sig
    M lib/mlton/basic/char0.sig
    M lib/mlton/basic/parse.sig
    M lib/mlton/basic/parse.sml
    M lib/mlton/basic/real.sig
    M lib/mlton/basic/vector.fun
    M lib/mlton/basic/vector.sig
    M mlton/atoms/c-function.fun
    M mlton/atoms/c-function.sig
    M mlton/atoms/c-type.fun
    M mlton/atoms/c-type.sig
    M mlton/atoms/const.fun
    M mlton/atoms/const.sig
    M mlton/atoms/id.fun
    M mlton/atoms/id.sig
    M mlton/atoms/prim-cons.fun
    M mlton/atoms/prim-cons.sig
    M mlton/atoms/prim.fun
    M mlton/atoms/prim.sig
    M mlton/atoms/real-x.fun
    M mlton/atoms/real-x.sig
    M mlton/atoms/word-size.fun
    M mlton/atoms/word-size.sig
    M mlton/atoms/word-x-vector.fun
    M mlton/atoms/word-x-vector.sig
    M mlton/atoms/word-x.fun
    M mlton/atoms/word-x.sig
    M mlton/backend/backend.fun
    M mlton/backend/chunkify.fun
    M mlton/backend/implement-profiling.fun
    M mlton/backend/limit-check.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/backend/packed-representation.fun
    M mlton/backend/rep-type.fun
    M mlton/backend/rssa.fun
    M mlton/backend/rssa.sig
    M mlton/backend/signal-check.fun
    M mlton/backend/ssa-to-rssa.fun
    M mlton/backend/switch.fun
    M mlton/closure-convert/closure-convert.fun
    M mlton/closure-convert/globalize.fun
    M mlton/closure-convert/lambda-free.fun
    M mlton/closure-convert/lambda-free.sig
    M mlton/codegen/amd64-codegen/amd64-mlton.fun
    M mlton/codegen/amd64-codegen/amd64-mlton.sig
    M mlton/codegen/amd64-codegen/amd64-translate.fun
    M mlton/codegen/amd64-codegen/amd64.fun
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/codegen/llvm-codegen/llvm-codegen.fun
    M mlton/codegen/x86-codegen/x86-mlton.fun
    M mlton/codegen/x86-codegen/x86-mlton.sig
    M mlton/codegen/x86-codegen/x86-translate.fun
    M mlton/codegen/x86-codegen/x86.fun
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/control/control.sml
    M mlton/defunctorize/defunctorize.fun
    M mlton/main/compile.fun
    M mlton/main/compile.sig
    M mlton/main/main.fun
    M mlton/match-compile/match-compile.fun
    M mlton/match-compile/match-compile.sig
    M mlton/ssa/analyze.fun
    M mlton/ssa/analyze2.fun
    M mlton/ssa/common-arg.fun
    M mlton/ssa/common-subexp.fun
    M mlton/ssa/constant-propagation.fun
    M mlton/ssa/direct-exp.fun
    M mlton/ssa/direct-exp.sig
    M mlton/ssa/direct-exp2.fun
    M mlton/ssa/direct-exp2.sig
    M mlton/ssa/duplicate-globals.fun
    M mlton/ssa/local-flatten.fun
    M mlton/ssa/loop-unroll.fun
    R mlton/ssa/parse-ssa.fun
    R mlton/ssa/parse-ssa.sig
    R mlton/ssa/parse-ssa2.fun
    R mlton/ssa/parse-ssa2.sig
    M mlton/ssa/redundant-tests.fun
    M mlton/ssa/redundant.fun
    M mlton/ssa/remove-unused.fun
    M mlton/ssa/remove-unused2.fun
    M mlton/ssa/shrink.fun
    M mlton/ssa/shrink2.fun
    M mlton/ssa/simplify-types.fun
    M mlton/ssa/simplify.fun
    M mlton/ssa/simplify2.fun
    M mlton/ssa/sources.cm
    M mlton/ssa/sources.mlb
    M mlton/ssa/ssa-to-ssa2.fun
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree.sig
    M mlton/ssa/ssa-tree2.fun
    M mlton/ssa/ssa-tree2.sig
    M mlton/ssa/type-check.fun
    M mlton/ssa/type-check2.fun
    M mlton/ssa/useless.fun
    M mlton/xml/cps-transform.fun
    M mlton/xml/implement-exceptions.fun
    M mlton/xml/implement-suffix.fun
    M mlton/xml/monomorphise.fun
    R mlton/xml/parse-sxml.fun
    R mlton/xml/parse-sxml.sig
    M mlton/xml/polyvariance.fun
    M mlton/xml/scc-funs.fun
    M mlton/xml/shrink.fun
    M mlton/xml/simplify-types.fun
    M mlton/xml/sources.cm
    M mlton/xml/sources.mlb
    M mlton/xml/sxml-simplify.fun
    M mlton/xml/type-check.fun
    M mlton/xml/xml-simplify.fun
    M mlton/xml/xml-tree.fun
    M mlton/xml/xml-tree.sig
    A regression/gc-collect2.ok
    A regression/gc-collect2.sml
    M runtime/Makefile
    M runtime/basis-ffi.h
    R runtime/basis/Word/Word-check.h
    R runtime/basis/Word/Word-consts.h
    M runtime/basis/Word/Word-ops.h
    M runtime/basis/Word/Word.c
    M runtime/gen/basis-ffi.def
    M runtime/gen/basis-ffi.h
    M runtime/gen/basis-ffi.sml
    M runtime/platform.h

  Log Message:
  -----------
  Merge branch 'master' into register-allocation-refactor


  Commit: 1b97811f99b64f8ccfb2d001f7f16d86760d02f1
      https://github.com/MLton/mlton/commit/1b97811f99b64f8ccfb2d001f7f16d86760d02f1
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-14 (Tue, 14 May 2019)

  Changed paths:
    M mlton/backend/restore.fun
    M mlton/backend/rssa.fun
    M mlton/backend/rssa.sig

  Log Message:
  -----------
  Merge-related fixes


  Commit: 4767f56081712e94e5e84a1f83c4ea85233c5471
      https://github.com/MLton/mlton/commit/4767f56081712e94e5e84a1f83c4ea85233c5471
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-14 (Tue, 14 May 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Remove unused loopId field


  Commit: 78fc6765ee5ce67ae0a4e9d4e2090d86c11a33d9
      https://github.com/MLton/mlton/commit/78fc6765ee5ce67ae0a4e9d4e2090d86c11a33d9
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-14 (Tue, 14 May 2019)

  Changed paths:
    M mlton/backend/rssa.fun

  Log Message:
  -----------
  Remove duplicate replaceLabels definition from merging


  Commit: 6530cb6c4d13c215786a1a0c197a43435def87a4
      https://github.com/MLton/mlton/commit/6530cb6c4d13c215786a1a0c197a43435def87a4
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-14 (Tue, 14 May 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Remove loop depth which never appeared in practice


  Commit: b9ef8edae7ec51a7daafc11b31317fc37c202da2
      https://github.com/MLton/mlton/commit/b9ef8edae7ec51a7daafc11b31317fc37c202da2
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-14 (Tue, 14 May 2019)

  Changed paths:
    M mlton/backend/restore.fun
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Remove now-unused vars


  Commit: 06149771cf3a288643d9481c53c120d0c3994d46
      https://github.com/MLton/mlton/commit/06149771cf3a288643d9481c53c120d0c3994d46
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-14 (Tue, 14 May 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Merge Local and LoopLocal definition location designators


  Commit: e327d86725cfb20ccdb53e2793ed6754a36bb5b4
      https://github.com/MLton/mlton/commit/e327d86725cfb20ccdb53e2793ed6754a36bb5b4
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-14 (Tue, 14 May 2019)

  Changed paths:
    M mlton/control/control-flags.sml

  Log Message:
  -----------
  Remove unused bounceRssaLoops/Locations options


  Commit: c9501cdd00f3a1fad420f66d66afe7253352fad8
      https://github.com/MLton/mlton/commit/c9501cdd00f3a1fad420f66d66afe7253352fad8
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-14 (Tue, 14 May 2019)

  Changed paths:
    M mlton/control/control-flags.sml

  Log Message:
  -----------
  Default bounceRssaLimit to 2 instead of 8, it's conservative but quite effective


  Commit: cfc73f43ebadca04bac11ad65b0ce80638643199
      https://github.com/MLton/mlton/commit/cfc73f43ebadca04bac11ad65b0ce80638643199
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-15 (Wed, 15 May 2019)

  Changed paths:
    M mlton/control/control-flags.sig
    M mlton/main/main.fun

  Log Message:
  -----------
  Fix bounce rssa flags left in signature/main


  Commit: a4200bf0d1276db5916616970a2fd91b15e9ed53
      https://github.com/MLton/mlton/commit/a4200bf0d1276db5916616970a2fd91b15e9ed53
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-15 (Wed, 15 May 2019)

  Changed paths:
    M mlton/backend/rssa.fun

  Log Message:
  -----------
  Merge branch 'rssa-shrink-fix' into register-allocation-refactor


  Commit: 25e1d3ef1b52327942186bfe9bc478f6fd5a73d5
      https://github.com/MLton/mlton/commit/25e1d3ef1b52327942186bfe9bc478f6fd5a73d5
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-20 (Mon, 20 May 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Skip bouncing at locations which have a large number of variables to bounce


  Commit: 06b3d3a47a0b9d96c63c942fec4dc50e3673fcb2
      https://github.com/MLton/mlton/commit/06b3d3a47a0b9d96c63c942fec4dc50e3673fcb2
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-20 (Mon, 20 May 2019)

  Changed paths:
    M mlton/control/control-flags.sml

  Log Message:
  -----------
  Fix default bounce limit and remove unused flag structure


  Commit: f9cd0dc063da583b6c9d9af9984422af82dff640
      https://github.com/MLton/mlton/commit/f9cd0dc063da583b6c9d9af9984422af82dff640
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-20 (Mon, 20 May 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun

  Log Message:
  -----------
  Support configurability of the cutoff for bounce locations


  Commit: 75209071716fb3e700269a0ceb7c4bd66c88acef
      https://github.com/MLton/mlton/commit/75209071716fb3e700269a0ceb7c4bd66c88acef
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-20 (Mon, 20 May 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun

  Log Message:
  -----------
  Support configurability of other bounce-rssa cutoffs


  Commit: df5569afe9fc52860f561f90c239093a744b8c99
      https://github.com/MLton/mlton/commit/df5569afe9fc52860f561f90c239093a744b8c99
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-26 (Sun, 26 May 2019)

  Changed paths:
    M mlton/control/control-flags.sml

  Log Message:
  -----------
  Fix control flags names


  Commit: b610a50a073a013a1995f4e20b6817326acbf2d2
      https://github.com/MLton/mlton/commit/b610a50a073a013a1995f4e20b6817326acbf2d2
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-26 (Sun, 26 May 2019)

  Changed paths:
    M mlton/backend/restore.fun
    M mlton/backend/restore.sig
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  RESTORE_R/RestoreR -> RESTORE_RSSA/RestoreRssa


  Commit: 60e4f9679b56989594bc1b5444ce6756b03cf48f
      https://github.com/MLton/mlton/commit/60e4f9679b56989594bc1b5444ce6756b03cf48f
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-29 (Wed, 29 May 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Cleanup separate-vars a bit, fix issue with unlimited loop size


  Commit: 6774d29c7025a86f8763ba95351392c558f1efad
      https://github.com/MLton/mlton/commit/6774d29c7025a86f8763ba95351392c558f1efad
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-29 (Wed, 29 May 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Change bounce weights to be the sum of 1/loopSize for each use in a loop


  Commit: d2a8467aae6964a3a7bd4f6f0d7e4bcb3694551b
      https://github.com/MLton/mlton/commit/d2a8467aae6964a3a7bd4f6f0d7e4bcb3694551b
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-29 (Wed, 29 May 2019)

  Changed paths:
    M mlton/backend/separate-vars.fun

  Log Message:
  -----------
  Change bounce weights to intInfs to prevent overflow


  Commit: b7faf7abf7c6ab2fa7f2967f95578d625e360de2
      https://github.com/MLton/mlton/commit/b7faf7abf7c6ab2fa7f2967f95578d625e360de2
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-30 (Thu, 30 May 2019)

  Changed paths:
    M mlton/backend/backend.fun
    A mlton/backend/bounce-vars.fun
    R mlton/backend/separate-vars.fun
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb

  Log Message:
  -----------
  Move SeparateVars -> BounceVars


  Commit: d168722b9ca247b4f5a448f65f3202b1b6d206ba
      https://github.com/MLton/mlton/commit/d168722b9ca247b4f5a448f65f3202b1b6d206ba
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-30 (Thu, 30 May 2019)

  Changed paths:
    M mlton/backend/bounce-vars.fun

  Log Message:
  -----------
  Improve clarity for bounce rssa pass


  Commit: b5702fd2dce4d196d55296ef7a2838bfa1123460
      https://github.com/MLton/mlton/commit/b5702fd2dce4d196d55296ef7a2838bfa1123460
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-30 (Thu, 30 May 2019)

  Changed paths:
    M mlton/backend/bounce-vars.fun

  Log Message:
  -----------
  Fix logic errors with bounce point cutoffs


  Commit: 37bf7bac0ae34f31dca66be3fbd3de410fc44249
      https://github.com/MLton/mlton/commit/37bf7bac0ae34f31dca66be3fbd3de410fc44249
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-30 (Thu, 30 May 2019)

  Changed paths:
    M mlton/backend/bounce-vars.fun

  Log Message:
  -----------
  More comment and control flow simplications for bounce-vars


  Commit: 2c618977ae05cbcff08f0fd7ac4d655f293cd07f
      https://github.com/MLton/mlton/commit/2c618977ae05cbcff08f0fd7ac4d655f293cd07f
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-30 (Thu, 30 May 2019)

  Changed paths:
    M mlton/backend/bounce-vars.fun

  Log Message:
  -----------
  Elaborate on isMutable setting on bounced variables


  Commit: a353d785106207dbc44376f7d07e4679994f3857
      https://github.com/MLton/mlton/commit/a353d785106207dbc44376f7d07e4679994f3857
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-30 (Thu, 30 May 2019)

  Changed paths:
    M basis-library/mlton/exit.sml
    M basis-library/primitive/prim-mlton.sml
    M basis-library/primitive/prim2.sml
    M bin/mlton-script
    M include/amd64-main.h
    M include/c-chunk.h
    M include/c-common.h
    M include/c-main.h
    M include/common-main.h
    M include/x86-main.h
    M lib/mlton/basic/hash-table.sig
    M lib/mlton/basic/hash-table.sml
    M lib/mlton/basic/hash.sig
    M lib/mlton/basic/hash.sml
    M lib/mlton/basic/vector.sig
    M mlton/atoms/atoms.fun
    M mlton/atoms/atoms.sig
    M mlton/atoms/c-function.fun
    M mlton/atoms/c-function.sig
    M mlton/atoms/ffi.fun
    M mlton/atoms/profile-label.fun
    M mlton/atoms/profile-label.sig
    A mlton/atoms/source-maps.fun
    A mlton/atoms/source-maps.sig
    M mlton/atoms/sources.cm
    M mlton/atoms/sources.mlb
    M mlton/backend/allocate-registers.fun
    M mlton/backend/backend.fun
    M mlton/backend/bounce-vars.fun
    M mlton/backend/chunkify.fun
    M mlton/backend/chunkify.sig
    M mlton/backend/equivalence-graph.fun
    M mlton/backend/implement-handlers.fun
    M mlton/backend/implement-profiling.fun
    R mlton/backend/implement-profiling.sig
    M mlton/backend/limit-check.fun
    M mlton/backend/live.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/backend/packed-representation.fun
    M mlton/backend/rep-type.fun
    M mlton/backend/restore.fun
    M mlton/backend/rssa.fun
    M mlton/backend/rssa.sig
    M mlton/backend/runtime.fun
    M mlton/backend/runtime.sig
    M mlton/backend/signal-check.fun
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb
    M mlton/backend/ssa-to-rssa.fun
    M mlton/codegen/amd64-codegen/amd64-codegen.fun
    M mlton/codegen/amd64-codegen/amd64-entry-transfer.fun
    M mlton/codegen/amd64-codegen/amd64-generate-transfers.fun
    M mlton/codegen/amd64-codegen/amd64-jump-info.fun
    M mlton/codegen/amd64-codegen/amd64-live-transfers.fun
    M mlton/codegen/amd64-codegen/amd64-loop-info.fun
    M mlton/codegen/amd64-codegen/amd64-mlton.fun
    M mlton/codegen/amd64-codegen/amd64-mlton.sig
    M mlton/codegen/amd64-codegen/amd64-pseudo.sig
    M mlton/codegen/amd64-codegen/amd64-translate.fun
    M mlton/codegen/amd64-codegen/amd64-translate.sig
    M mlton/codegen/amd64-codegen/amd64.fun
    M mlton/codegen/amd64-codegen/amd64.sig
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/codegen/c-codegen/c-codegen.sig
    M mlton/codegen/llvm-codegen/llvm-codegen.fun
    M mlton/codegen/x86-codegen/x86-codegen.fun
    M mlton/codegen/x86-codegen/x86-entry-transfer.fun
    M mlton/codegen/x86-codegen/x86-generate-transfers.fun
    M mlton/codegen/x86-codegen/x86-jump-info.fun
    M mlton/codegen/x86-codegen/x86-live-transfers.fun
    M mlton/codegen/x86-codegen/x86-loop-info.fun
    M mlton/codegen/x86-codegen/x86-mlton.fun
    M mlton/codegen/x86-codegen/x86-mlton.sig
    M mlton/codegen/x86-codegen/x86-pseudo.sig
    M mlton/codegen/x86-codegen/x86-translate.fun
    M mlton/codegen/x86-codegen/x86-translate.sig
    M mlton/codegen/x86-codegen/x86.fun
    M mlton/codegen/x86-codegen/x86.sig
    M mlton/control/bits.sml
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/compile.fun
    M mlton/main/lookup-constant.fun
    M mlton/main/main.fun
    M mlton/ssa/direct-exp.fun
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree.sig
    M mlton/ssa/ssa-tree2.fun
    M mlton/ssa/ssa-tree2.sig
    M runtime/Makefile
    R runtime/basis/Real/Math-fns.h
    R runtime/basis/Real/Math.c
    M runtime/basis/Real/Real-ops.h
    M runtime/gc.h
    M runtime/gc/call-stack.c
    M runtime/gc/dfs-mark.c
    M runtime/gc/foreach.c
    M runtime/gc/frame.c
    M runtime/gc/frame.h
    M runtime/gc/gc_state.h
    M runtime/gc/init.c
    M runtime/gc/invariant.c
    M runtime/gc/profiling.c
    M runtime/gc/sources.c
    M runtime/gc/sources.h
    M runtime/gc/stack.c
    M runtime/gc/stack.h
    M runtime/platform.h

  Log Message:
  -----------
  Merge branch 'master' of github.com:MLton/mlton into register-allocation-refactor


  Commit: ebe0ef79f635249a8d64adb8cbe1eee8222b07f0
      https://github.com/MLton/mlton/commit/ebe0ef79f635249a8d64adb8cbe1eee8222b07f0
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-31 (Fri, 31 May 2019)

  Changed paths:
    M lib/mlton/basic/directed-graph.sig
    M lib/mlton/basic/directed-graph.sml
    M mlton/backend/allocate-registers.fun
    M mlton/backend/limit-check.fun
    M mlton/backend/rssa.fun
    M mlton/backend/rssa.sig
    M mlton/backend/signal-check.fun
    M mlton/codegen/amd64-codegen/amd64-loop-info.fun
    M mlton/codegen/x86-codegen/x86-loop-info.fun
    M mlton/control/control-flags.sml
    M mlton/ssa/loop-unroll.fun
    M mlton/ssa/loop-unswitch.fun

  Log Message:
  -----------
  Code style cleanup (minor)


  Commit: 9ccfb06a97a0b50bee0e50181f0adf9346cf86b9
      https://github.com/MLton/mlton/commit/9ccfb06a97a0b50bee0e50181f0adf9346cf86b9
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-05-31 (Fri, 31 May 2019)

  Changed paths:
    M lib/mlton/basic/directed-graph.sig
    M lib/mlton/basic/directed-graph.sml
    M mlton/backend/allocate-registers.fun
    M mlton/backend/backend.fun
    A mlton/backend/bounce-vars.fun
    M mlton/backend/limit-check.fun
    M mlton/backend/machine.fun
    A mlton/backend/restore.fun
    A mlton/backend/restore.sig
    M mlton/backend/rssa.fun
    M mlton/backend/rssa.sig
    M mlton/backend/signal-check.fun
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb
    M mlton/codegen/amd64-codegen/amd64-loop-info.fun
    M mlton/codegen/x86-codegen/x86-loop-info.fun
    M mlton/control/control-flags.sig
    M mlton/control/control-flags.sml
    M mlton/main/main.fun
    M mlton/ssa/loop-unroll.fun
    M mlton/ssa/loop-unswitch.fun
    M mlton/ssa/sources.cm
    M mlton/ssa/sources.mlb
    M mlton/ssa/ssa-tree.fun
    M mlton/ssa/ssa-tree2.fun

  Log Message:
  -----------
  Merge pull request #299 from jasoncarr0/register-allocation-refactor

Bounce variables around forced stack allocations in RSSA loops

See MLton/mlton#218.

In the translation from RSSA to Machine, each RSSA variable is
assigned a location: either a stack slot or a register (i.e., local).
An RSSA variable is assigned to a stack slot if it is live across a
non-tail call or a `mayGC` ccall.  Assigning an RSSA variable to a
stack slot has a potential cost, because stack-slot accesses appear as
memory reads and writes to the codegens and are not easily realized by
hardware registers.  This cost is multiplied when the stack-slot
accesses are within a loop.  For example, consider the tail recursive
`revapp`:

``` standard-ml
fun revapp (l, acc) =
  case l of
     [] => acc
   | h::t => revapp (t, h::acc)
```

This will be realized as an intraprocedural loop; however, due to the
`h::acc` allocation in the loop, there will be a potential GC that
forces `l` and `acc` to be assigned to stack slots (assuming the GC
check occurs at the loop header).  It would seem to be more efficient
to assign `l` and `acc` to registers, moving them to and from stack
slots at the GC, because a GC should occur on only a small fraction of
the loop iterations.

A new `BounceVars` RSSA pass attempts to split the live ranges of RSSA
variables that are used within loops so that the within-loop instances
of the variables are assigned registers (possibly being moved to and
from stack slots around a GC).

Unfortunately, it has not been easy to find good heuristics.  The
current defaults are biased towards not degrading performance.

## Benchmark results (cadmium)

Specs:
* 4 x AMD Opteron(tm) Processor 6172 (2.1GHz; 48 physical cores)
* Ubuntu 16.04.6 LTS
* gcc: gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.11)
* gcc-8: gcc version 8.3.0 (Homebrew GCC 8.3.0)
* llvm: LLVM version 8.0.0

``` text
config command                                                               
C00    /home/mtf/devel/mlton/builds/g9ba73ad1e/bin/mlton -codegen amd64      
C01    /home/mtf/devel/mlton/builds/g9ba73ad1e/bin/mlton -codegen c          
C02    /home/mtf/devel/mlton/builds/g9ba73ad1e/bin/mlton -codegen c -cc gcc-8
C03    /home/mtf/devel/mlton/builds/g9ba73ad1e/bin/mlton -codegen llvm       
C04    /home/mtf/devel/mlton/builds/ga353d7851/bin/mlton -codegen amd64      
C05    /home/mtf/devel/mlton/builds/ga353d7851/bin/mlton -codegen c          
C06    /home/mtf/devel/mlton/builds/ga353d7851/bin/mlton -codegen c -cc gcc-8
C07    /home/mtf/devel/mlton/builds/ga353d7851/bin/mlton -codegen llvm       
```

### Run-Time Ratio

``` text
program           `C04/C00` `C05/C01` `C06/C02` `C07/C03`
barnes-hut           1.050     1.004     0.9939    0.9724
boyer                1.020     0.9547    0.9826    0.9940
checksum             1.007     1.034     0.9795    1.003 
count-graphs         0.9735    1.008     0.9826    0.9722
DLXSimulator         0.9397    0.9566    0.9553    0.8925
even-odd             0.9185    1.019     1.000     0.9754
fft                  1.061     1.041     1.039     1.021 
fib                  1.013     1.046     1.040     0.9884
flat-array           1.064     0.9138    0.9901    0.9247
hamlet               0.9442    0.9713    0.9664    0.9955
imp-for              1.040     0.9223    0.8787    1.005 
knuth-bendix         0.9967    1.007     0.9924    0.9744
lexgen               1.005     1.025     0.9892    0.9574
life                 0.9805    0.9813    0.9779    1.012 
logic                1.062     0.9721    1.002     0.9641
mandelbrot           0.9995    1.003     1.005     1.000 
matrix-multiply      0.9424    1.028     1.040     0.9958
md5                  0.9946    0.9913    0.9929    1.053 
merge                0.9942    0.9397    0.9797    0.9558
mlyacc               0.9956    0.9558    1.021     1.026 
model-elimination    0.9816    0.9842    1.000     0.9769
mpuz                 0.6748    0.8899    0.9354    1.084 
nucleic              0.9955    0.9901    1.008     0.9746
output1              0.9880    0.8836    0.8840    0.9090
peek                 1.010     1.075     0.9669    1.000 
pidigits             0.9778    1.055     0.9936    1.018 
psdes-random         0.9905    0.9943    1.054     1.000 
ratio-regions        1.030     1.071     0.9943    0.9448
ray                  1.016     0.9944    0.9993    1.030 
raytrace             1.024     1.009     0.9994    1.017 
simple               0.9900    1.017     1.019     1.032 
smith-normal-form    1.015     1.017     1.080     1.061 
string-concat        0.9619    1.004     0.9863    1.173 
tailfib              0.9867    1.056     1.001     0.9989
tailmerge            1.005     1.002     0.9844    0.9697
tak                  0.9886    1.025     0.9999    1.013 
tensor               1.015     0.9728    1.006     0.9927
tsp                  1.028     0.9878    0.9956    0.9745
tyan                 1.029     1.011     1.012     0.9404
vector32-concat      0.7653    0.6395    0.8281    1.003 
vector64-concat      0.8517    0.7782    0.8571    0.9619
vector-rev           0.9514    0.9847    0.8541    0.9161
vliw                 1.028     0.9368    1.017     1.011 
wc-input1            0.9170    0.9157    0.9084    0.9240
wc-scanStream        0.9929    1.007     1.146     1.038 
zebra                0.9984    1.008     1.008     0.9941
zern                 1.026     0.9929    1.005     0.9942
MIN                  0.6748    0.6395    0.8281    0.8925
GMEAN                0.9811    0.9771    0.9846    0.9912
MAX                  1.064     1.075     1.146     1.173 
```

Notes:
* Overall, there is less run-time improvements than were hoped,
  although there are some "big" wins and no "big" losses.
* The LLVM codegen seems to benefit the least; it may be that LLVM is
  able to realizes some stack-slot accesses as hardware registers
  (although it is unclear how it justifies doing so --- LLVM should
  not be able to "see" that the access of stack slots and heap objects
  do not alias).
* The speedups with `vector32-concat` and `vector64-concat` may be
  related to the observation made in MLton/mlton#288, where it was
  observed that moving a sequence from a register to a global had a
  significant slowdown (since the access through the global required
  an additional level of indirection).  In this case, a sequence may
  be moving from a stack slot to a register, eliminating a level of
  indirection.

### Compile-Time Ratio

``` text
program           `C04/C00` `C05/C01` `C06/C02` `C07/C03`
barnes-hut           0.9721    0.9760    0.9171    0.9393
boyer                0.9054    0.9675    0.9988    1.024 
checksum             0.9636    0.9630    0.9753    1.016 
count-graphs         0.9822    1.002     0.9862    0.9151
DLXSimulator         0.9205    0.9248    0.9340    0.9704
even-odd             0.9808    0.9600    0.9705    1.015 
fft                  0.9938    0.9644    0.9817    0.9656
fib                  0.9670    0.9777    0.9750    0.9473
flat-array           0.9781    0.9758    1.013     0.9805
hamlet               0.9942    1.104     1.029     1.000 
imp-for              0.9380    0.9764    0.9429    0.9979
knuth-bendix         0.9409    0.9584    0.8814    0.8520
lexgen               0.9317    0.8911    0.8933    0.9525
life                 0.9598    0.9610    0.9812    0.9046
logic                0.9704    0.9620    0.9474    0.9856
mandelbrot           0.9370    0.9926    1.011     0.9694
matrix-multiply      0.9510    0.9425    0.9634    0.9497
md5                  0.9568    0.9609    0.9473    0.9282
merge                0.9896    0.9517    0.9780    0.9987
mlyacc               1.124     1.076     1.161     1.150 
model-elimination    0.9912    0.9493    1.093     0.9879
mpuz                 0.9568    0.9690    1.006     0.9763
nucleic              0.9010    0.9169    0.9384    1.079 
output1              0.9668    0.9896    0.9598    0.9086
peek                 0.9713    0.9736    0.9840    0.9626
pidigits             0.9720    0.9686    0.9494    0.9379
psdes-random         0.9761    1.004     1.002     0.9435
ratio-regions        0.9844    0.9421    0.9679    0.9262
ray                  0.9605    0.8728    0.8533    0.8406
raytrace             0.9130    0.9501    0.8719    1.029 
simple               0.8696    0.9130    0.9537    0.9602
smith-normal-form    0.9000    0.9400    0.9632    1.167 
string-concat        0.9667    0.9934    0.9466    1.000 
tailfib              0.9807    0.9598    0.9779    0.9713
tailmerge            0.9848    0.9871    0.9878    0.9870
tak                  0.9720    1.0000    0.9728    0.9968
tensor               0.9739    0.9348    0.9057    0.8996
tsp                  0.9955    1.001     0.9283    0.9518
tyan                 0.9734    0.9536    0.9052    0.9488
vector32-concat      0.9527    0.9997    0.9673    0.9471
vector64-concat      0.9617    0.9722    0.9921    0.9885
vector-rev           0.9809    0.9846    0.9625    0.9955
vliw                 1.020     1.004     1.111     1.086 
wc-input1            0.9345    1.002     0.9502    0.9549
wc-scanStream        0.9890    0.9830    1.027     1.028 
zebra                0.9712    0.9204    1.101     0.9702
zern                 0.9416    1.013     1.098     0.8998
MIN                  0.8696    0.8728    0.8533    0.8406
GMEAN                0.9635    0.9691    0.9740    0.9727
MAX                  1.124     1.104     1.161     1.167 
```

Notes:
* One concern with assigning more RSSA variables to registers is that
  increases the burden on the codegen (hardware) register allocator.
* With the exception of `mlyacc`, there is a general improvement in
  compile time.  Note that configs C04, C05, C06, and C07 are using a
  MLton compiled with `BounceVars` to compile programs with
  `BounceVars`.  It isn't clear how much of the benefit is due to the
  effect of `BounceVars` on the compiled MLton and how much is due to
  the effect of `BounceVars` on the IR of the compiled programs.  In
  any case, it seems that `BounceVars` "pays for itself", although the
  greatest improvements are not on the largest benchmark programs
  (`hamlet`, `mlyacc`, `model-elimination`, `nucleic`, `vliw`).

### Executable-Size Ratio

``` text
program           `C04/C00` `C05/C01` `C06/C02` `C07/C03`
barnes-hut            1.005    1.005     1.009     0.9982
boyer                 1.002    0.9940    0.9967    0.9972
checksum              1.005    1.001     1.001     1.000 
count-graphs          1.007    1.004     1.005     1.001 
DLXSimulator          1.015    1.005     1.006     1.007 
even-odd              1.005    1.001     0.9999    1.0000
fft                   1.009    1.006     1.004     1.003 
fib                   1.005    1.001     0.9998    1.000 
flat-array            1.005    1.001     1.001     0.9993
hamlet                1.002    1.003     1.004     0.9999
imp-for               1.005    1.001     1.001     0.9991
knuth-bendix          1.004    0.9990    1.003     1.001 
lexgen                1.025    1.001     1.002     1.004 
life                  1.003    0.9999    1.000     0.9999
logic                 1.004    1.003     1.001     1.002 
mandelbrot            1.005    1.001     1.001     0.9994
matrix-multiply       1.005    1.000     1.002     0.9993
md5                   1.005    1.002     1.002     1.007 
merge                 1.004    1.000     0.9994    0.9995
mlyacc                1.176    1.154     1.183     1.180 
model-elimination     1.006    1.009     1.011     1.003 
mpuz                  1.006    0.9998    1.001     1.001 
nucleic               1.000    0.9996    0.9998    0.9985
output1               1.006    1.002     1.002     1.006 
peek                  1.005    1.001     1.001     0.9996
pidigits              1.003    0.9998    1.001     1.005 
psdes-random          1.005    1.001     1.002     0.9976
ratio-regions         1.020    1.008     1.007     1.009 
ray                   1.023    1.021     1.018     1.013 
raytrace              1.008    1.003     1.003     1.011 
simple                1.009    1.033     1.034     1.055 
smith-normal-form     1.005    1.005     1.006     1.003 
string-concat         1.004    0.9997    1.002     0.9980
tailfib               1.005    1.000     1.000     0.9998
tak                   1.005    1.001     0.9997    0.9999
tensor                1.019    1.019     1.018     1.020 
tsp                   1.005    1.002     1.004     1.007 
tyan                  1.034    1.026     1.025     1.030 
vector32-concat       1.005    1.000     1.001     0.9984
vector64-concat       1.005    1.000     1.001     0.9982
vector-rev            1.005    1.001     1.001     0.9988
vliw                  1.033    1.010     1.012     1.027 
wc-input1             1.012    1.009     1.008     1.010 
wc-scanStream         1.011    1.006     1.007     1.007 
zebra                 1.004    1.001     1.002     1.005 
zern                  1.006    1.003     1.001     1.002 
MIN                   1.000    0.9940    0.9967    0.9972
GMEAN                 1.012    1.007     1.008     1.008 
MAX                   1.176    1.154     1.183     1.180 
```

Notes:
* Consistent with the increase in compile-time for `mlyacc`, there is
  an increase in code size for `mlyacc`.
* Otherwise, there is little change in code size.


## Benchmark results (sulfur)

Specs:
* 2 x Intel(R) Xeon(R) CPU E5-2637 v3 @ 3.50GHz (8 physical cores; 16 logical cores)
* Ubuntu 16.04.6 LTS
* gcc: gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.11)
* gcc-8: gcc version 8.3.0 (Homebrew GCC 8.3.0)
* llvm: LLVM version 8.0.0

``` text
config command                                                               
C00    /home/mtf/devel/mlton/builds/g9ba73ad1e/bin/mlton -codegen amd64      
C01    /home/mtf/devel/mlton/builds/g9ba73ad1e/bin/mlton -codegen c          
C02    /home/mtf/devel/mlton/builds/g9ba73ad1e/bin/mlton -codegen c -cc gcc-8
C03    /home/mtf/devel/mlton/builds/g9ba73ad1e/bin/mlton -codegen llvm       
C04    /home/mtf/devel/mlton/builds/ga353d7851/bin/mlton -codegen amd64      
C05    /home/mtf/devel/mlton/builds/ga353d7851/bin/mlton -codegen c          
C06    /home/mtf/devel/mlton/builds/ga353d7851/bin/mlton -codegen c -cc gcc-8
C07    /home/mtf/devel/mlton/builds/ga353d7851/bin/mlton -codegen llvm       
```

### Run-Time Ratio

``` text
program           `C04/C00` `C05/C01` `C06/C02` `C07/C03`
barnes-hut           1.066     1.004     0.9963    0.8840
boyer                0.9890    0.9917    0.9902    0.9567
checksum             1.065     1.001     0.9935    0.9681
count-graphs         0.9580    0.9805    0.9665    0.9672
DLXSimulator         0.7266    0.7235    0.7374    0.7496
even-odd             1.009     0.9903    0.9873    0.9845
fft                  0.9930    0.9983    0.9710    0.9682
fib                  1.108     1.023     1.0000    0.9724
flat-array           0.9638    0.9581    0.9604    0.9620
hamlet               0.8991    0.9415    0.9295    0.9544
imp-for              0.9688    0.9359    0.9240    1.123 
knuth-bendix         1.005     0.9915    1.025     1.005 
lexgen               1.001     0.9954    0.9583    0.9974
life                 0.9659    1.003     0.9652    0.9923
logic                0.9887    0.9938    0.9702    0.9919
mandelbrot           0.9989    1.015     1.024     1.008 
matrix-multiply      1.017     0.9927    1.014     0.9881
md5                  0.9846    1.006     0.9868    1.026 
merge                1.071     1.077     1.039     1.074 
mlyacc               0.9994    0.9986    1.012     1.011 
model-elimination    0.9850    0.9656    0.9885    0.9879
mpuz                 0.7695    0.8649    0.9525    1.018 
nucleic              0.9267    0.9614    0.9359    0.9804
output1              0.9453    0.8869    0.8673    0.8782
peek                 0.9988    1.000     1.011     0.9938
pidigits             0.9734    0.9961    1.003     0.9986
psdes-random         0.9902    0.9998    1.016     0.9956
ratio-regions        1.107     0.9887    0.9315    0.9852
ray                  0.9905    0.9674    0.9930    0.9931
raytrace             1.008     1.032     1.005     1.057 
simple               0.9659    0.9692    0.9842    0.9648
smith-normal-form    0.9858    0.9876    0.9712    0.9615
string-concat        0.9901    1.001     1.007     0.9731
tailfib              0.9968    1.015     1.000     0.9936
tailmerge            0.9893    0.9932    0.9810    0.8081
tak                  0.9724    1.058     0.9762    0.9693
tensor               1.005     0.9982    0.9914    1.006 
tsp                  1.030     1.049     1.037     1.032 
tyan                 1.007     0.9887    0.9850    1.002 
vector32-concat      0.3328    0.3212    0.6566    1.029 
vector64-concat      0.3983    0.3806    0.7111    0.9922
vector-rev           0.9282    1.032     0.9473    0.9013
vliw                 0.9068    0.8996    0.8662    0.9419
wc-input1            1.396     0.9463    1.120     1.348 
wc-scanStream        0.9928    1.015     1.117     0.9642
zebra                0.9957    0.9966    0.9974    0.9967
zern                 0.9958    1.013     1.000     0.9743
MIN                  0.3328    0.3212    0.6566    0.7496
GMEAN                0.9468    0.9393    0.9640    0.9827
MAX                  1.396     1.077     1.120     1.348 
```

Notes:
* Again, there are some "big" wins and no "big" losses.
* Interestingly, compared to `cadmium`, `vector32-concat` and
  `vector64-concat` see greater speedups, though `mpuz` sees a smaller
  speedup.

### Compile-Time Ratio

``` text
program           `C04/C00` `C05/C01` `C06/C02` `C07/C03`
barnes-hut           0.9401    0.9632    1.013     1.006 
boyer                0.9659    1.000     0.9725    0.9629
checksum             1.022     0.9911    0.9966    0.9967
count-graphs         1.005     1.042     1.004     1.011 
DLXSimulator         0.9910    0.9526    0.9833    0.9914
even-odd             0.9654    0.9591    1.009     0.9795
fft                  0.9841    0.9713    0.9885    0.9923
fib                  0.9417    0.9946    1.000     0.9976
flat-array           1.002     1.049     0.9716    1.012 
hamlet               1.103     1.018     0.9917    0.9781
imp-for              0.9586    1.041     0.9824    1.032 
knuth-bendix         0.9690    1.007     1.034     0.9347
lexgen               1.049     0.9718    0.9930    1.029 
life                 0.9490    0.9798    1.023     1.018 
logic                0.9936    0.9303    0.9768    0.9715
mandelbrot           0.9959    0.9518    0.9339    0.9740
matrix-multiply      1.117     1.060     1.013     0.9176
md5                  1.007     0.9454    0.9904    0.9973
merge                0.9922    0.9493    0.9793    1.015 
mlyacc               1.113     1.125     1.136     1.143 
model-elimination    0.9702    1.030     1.025     1.017 
mpuz                 1.015     0.9249    1.053     0.9401
nucleic              0.9813    1.007     0.9919    1.043 
output1              0.9285    0.9746    0.9603    1.049 
peek                 0.9547    0.9915    0.9410    0.9543
pidigits             0.9569    0.9757    0.9745    0.9973
psdes-random         0.9687    0.9835    1.006     0.9596
ratio-regions        0.9640    1.021     1.019     1.036 
ray                  1.079     0.9156    0.9577    0.9714
raytrace             1.008     0.9028    1.010     1.052 
simple               1.025     1.154     0.9570    1.068 
smith-normal-form    0.9611    0.9399    0.9215    0.9196
string-concat        1.023     0.9968    0.9789    1.072 
tailfib              0.9869    0.9748    0.9711    1.001 
tailmerge            0.9812    0.9766    0.9731    0.9051
tak                  0.9694    0.9863    0.9719    0.9681
tensor               0.9759    1.061     0.9847    1.030 
tsp                  0.9818    1.094     0.9497    1.066 
tyan                 1.018     1.004     0.9927    1.011 
vector32-concat      0.9783    0.9755    0.9766    0.9792
vector64-concat      0.9820    0.9876    0.9830    0.9607
vector-rev           0.9648    0.9215    1.066     1.002 
vliw                 1.075     1.045     1.035     1.052 
wc-input1            1.012     1.025     1.005     0.9931
wc-scanStream        0.9747    0.9883    0.9940    0.9761
zebra                0.9838    0.9624    0.9758    1.003 
zern                 0.8921    0.9604    0.9794    0.9880
MIN                  0.8921    0.9028    0.9215    0.9051
GMEAN                0.9921    0.9920    0.9919    0.9985
MAX                  1.117     1.154     1.136     1.143 
```

Notes:
* Compared to `cadmium`, there is less general improvement in compile
  time, though (with the exception of `mlyacc`), no "across the board"
  slowdowns.

### Executable-Size Ratio

``` text
program           `C04/C00` `C05/C01` `C06/C02` `C07/C03`
barnes-hut            1.005    1.005     1.009     0.9983
boyer                 1.002    0.9940    0.9967    0.9972
checksum              1.005    1.001     1.001     1.000 
count-graphs          1.007    1.004     1.005     1.001 
DLXSimulator          1.015    1.005     1.006     1.008 
even-odd              1.005    1.001     0.9999    0.9999
fft                   1.009    1.006     1.004     1.003 
fib                   1.005    1.001     0.9998    1.000 
flat-array            1.005    1.001     1.001     0.9995
hamlet                1.002    1.003     1.004     0.9999
imp-for               1.005    1.001     1.001     0.9991
knuth-bendix          1.004    0.9989    1.003     1.000 
lexgen                1.025    1.001     1.002     1.004 
life                  1.003    0.9998    1.000     0.9997
logic                 1.004    1.003     1.001     0.9997
mandelbrot            1.005    1.001     1.001     0.9994
matrix-multiply       1.005    1.000     1.002     0.9996
md5                   1.005    1.002     1.002     1.007 
merge                 1.004    1.000     0.9993    0.9994
mlyacc                1.176    1.154     1.183     1.179 
mo...
 
[truncated message content]

[MLton-commit] [MLton/mlton] c253f1: Move `ProfileInfo` to `atoms` to facilitate sharin...

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: c253f1bfc6c520cd2279059271e97ae415ba1a30
      https://github.com/MLton/mlton/commit/c253f1bfc6c520cd2279059271e97ae415ba1a30
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-25 (Sat, 25 May 2019)

  Changed paths:
    M mlton/atoms/atoms.fun
    M mlton/atoms/atoms.sig
    A mlton/atoms/profile-info.fun
    A mlton/atoms/profile-info.sig
    M mlton/atoms/sources.cm
    M mlton/atoms/sources.mlb
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig

  Log Message:
  -----------
  Move `ProfileInfo` to `atoms` to facilitate sharing between RSSA and Machine


  Commit: 40f8e6788b5c425b248f66c609e547612840d7ce
      https://github.com/MLton/mlton/commit/40f8e6788b5c425b248f66c609e547612840d7ce
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-25 (Sat, 25 May 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/implement-profiling.fun
    M mlton/backend/implement-profiling.sig

  Log Message:
  -----------
  Drop `structure Machine` from `functor ImplementProfiling`


  Commit: 9f8b548b4adab5b5eb0b94ccb4b832f1946a4c96
      https://github.com/MLton/mlton/commit/9f8b548b4adab5b5eb0b94ccb4b832f1946a4c96
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-25 (Sat, 25 May 2019)

  Changed paths:
    M mlton/atoms/profile-info.fun
    M mlton/atoms/profile-info.sig
    M mlton/backend/implement-profiling.fun
    M mlton/backend/machine.fun
    M mlton/backend/rep-type.fun
    M mlton/backend/runtime.fun
    M mlton/backend/runtime.sig
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/main/compile.fun
    M mlton/main/lookup-constant.fun
    M runtime/gc/profiling.c
    M runtime/gc/sources.c
    M runtime/gc/sources.h

  Log Message:
  -----------
  Unify fields of `structure ProfileInfo.T` and `struct GC_sourceMaps`


  Commit: 09268743e3c9e501f164b868f4affcd6a523104d
      https://github.com/MLton/mlton/commit/09268743e3c9e501f164b868f4affcd6a523104d
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-25 (Sat, 25 May 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/implement-handlers.fun
    M mlton/backend/implement-profiling.fun
    R mlton/backend/implement-profiling.sig
    M mlton/backend/limit-check.fun
    M mlton/backend/rssa.fun
    M mlton/backend/rssa.sig
    M mlton/backend/signal-check.fun
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb
    M mlton/backend/ssa-to-rssa.fun

  Log Message:
  -----------
  Move `makeProfileInfo` into `Rssa.Program.T`

Simplifies `rssaSimplify` pass.


  Commit: 09d1c1866632b06710a0754e97d7e85692f8eb3a
      https://github.com/MLton/mlton/commit/09d1c1866632b06710a0754e97d7e85692f8eb3a
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-25 (Sat, 25 May 2019)

  Changed paths:
    M mlton/backend/implement-profiling.fun

  Log Message:
  -----------
  Replace `HashSet` with `HashTable` in `ImplementProfiling`


  Commit: 19958ba8335c094ac80a2dcd441f90d7b99c635d
      https://github.com/MLton/mlton/commit/19958ba8335c094ac80a2dcd441f90d7b99c635d
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-26 (Sun, 26 May 2019)

  Changed paths:
    M mlton/backend/implement-profiling.fun

  Log Message:
  -----------
  Use HashTable for Label to sourceSeqIndex map in ImplementProfiling

First infrastructure change to moving the runtime representation the
frame to sourceSeqIndex mapping into the frame info.


  Commit: b9c3f9fa79e48f200cec8c89899634ceced9b088
      https://github.com/MLton/mlton/commit/b9c3f9fa79e48f200cec8c89899634ceced9b088
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-28 (Tue, 28 May 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/implement-profiling.fun
    M mlton/backend/rssa.fun
    M mlton/backend/rssa.sig

  Log Message:
  -----------
  Export `getFrameSourceSeqIndex` as part of `makeProfileInfo` in RSSA `Program.T`


  Commit: d0edfb52605f6a3fa17dde075ca5d08b23aed915
      https://github.com/MLton/mlton/commit/d0edfb52605f6a3fa17dde075ca5d08b23aed915
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-28 (Tue, 28 May 2019)

  Changed paths:
    M include/common-main.h
    M mlton/backend/machine.fun
    M mlton/codegen/amd64-codegen/amd64-generate-transfers.fun
    M mlton/codegen/amd64-codegen/amd64-pseudo.sig
    M mlton/codegen/amd64-codegen/amd64-translate.fun
    M mlton/codegen/amd64-codegen/amd64.fun
    M mlton/codegen/amd64-codegen/amd64.sig
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/codegen/x86-codegen/x86-generate-transfers.fun
    M mlton/codegen/x86-codegen/x86-pseudo.sig
    M mlton/codegen/x86-codegen/x86-translate.fun
    M mlton/codegen/x86-codegen/x86.fun
    M mlton/codegen/x86-codegen/x86.sig
    M runtime/gc.h
    M runtime/gc/dfs-mark.c
    M runtime/gc/foreach.c
    M runtime/gc/frame.c
    M runtime/gc/frame.h
    M runtime/gc/gc_state.h
    M runtime/gc/invariant.c
    M runtime/gc/profiling.c
    M runtime/gc/sources.h
    M runtime/gc/stack.c
    M runtime/gc/stack.h

  Log Message:
  -----------
  Rename `frameLayout{,s}` to `frameInfo{,s}` in runtime


  Commit: 2bdf6650d2bcae5bb642e7dc9e3ae53fdc8340b2
      https://github.com/MLton/mlton/commit/2bdf6650d2bcae5bb642e7dc9e3ae53fdc8340b2
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-28 (Tue, 28 May 2019)

  Changed paths:
    M lib/mlton/basic/hash.sig
    M lib/mlton/basic/hash.sml

  Log Message:
  -----------
  Add `Hash.option{,Map}` to MLton Library


  Commit: 01ca92f87407dd8b205353f57fbfa405b523c438
      https://github.com/MLton/mlton/commit/01ca92f87407dd8b205353f57fbfa405b523c438
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-28 (Tue, 28 May 2019)

  Changed paths:
    M mlton/backend/backend.fun
    M mlton/backend/implement-profiling.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/codegen/c-codegen/c-codegen.fun
    M runtime/gc/frame.h

  Log Message:
  -----------
  Add `sourceSeqIndex` to `Machine.FrameInfo.T`/`struct GC_frameInfo`

By including the `sourceSeqIndex` in the frame info, frames that share their
sourceSeqIndex and all other frame info fields are automatically shared.  With
defunctorization and monomorphisation and inlining, it is quite possible for
distinct blocks of the final RSSA IR program to nontheless correspond to the
same source location.  This avoids unnecessarily creating extraneous frame infos
and simplifies the logic of when to create unique frame infos.


  Commit: 151a835d24ac66c1e6cece672b994c5225e507ef
      https://github.com/MLton/mlton/commit/151a835d24ac66c1e6cece672b994c5225e507ef
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-28 (Tue, 28 May 2019)

  Changed paths:
    M include/common-main.h
    M mlton/codegen/c-codegen/c-codegen.fun
    M runtime/gc/call-stack.c
    M runtime/gc/init.c
    M runtime/gc/profiling.c
    M runtime/gc/sources.c
    M runtime/gc/sources.h

  Log Message:
  -----------
  Use `s->frameInfos[fi].sourceSeqIndex` rather than `s->sourceMaps.frameSources[fi]`


  Commit: 1cc3b0c54e1d5342bb83ae2bd33eea2059451ea5
      https://github.com/MLton/mlton/commit/1cc3b0c54e1d5342bb83ae2bd33eea2059451ea5
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-28 (Tue, 28 May 2019)

  Changed paths:
    M mlton/atoms/profile-info.fun
    M mlton/atoms/profile-info.sig
    M mlton/backend/backend.fun
    M mlton/backend/implement-handlers.fun
    M mlton/backend/implement-profiling.fun
    M mlton/backend/limit-check.fun
    M mlton/backend/machine.fun
    M mlton/backend/rssa.fun
    M mlton/backend/rssa.sig
    M mlton/backend/signal-check.fun
    M mlton/backend/ssa-to-rssa.fun
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Eliminate `frameSources` field of `ProfileInfo.T`


  Commit: b48edf789250f99eb5807d89fd3fc1fa415b7d88
      https://github.com/MLton/mlton/commit/b48edf789250f99eb5807d89fd3fc1fa415b7d88
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-29 (Wed, 29 May 2019)

  Changed paths:
    M include/common-main.h
    M mlton/atoms/profile-info.fun
    M mlton/atoms/profile-info.sig
    M mlton/backend/implement-profiling.fun
    M mlton/backend/machine.fun
    M mlton/codegen/c-codegen/c-codegen.fun
    M runtime/gc/profiling.c
    M runtime/gc/sources.c
    M runtime/gc/sources.h

  Log Message:
  -----------
  Rename `sourceLabel` to `profileLabelInfo`


  Commit: 8219dd673eecac795c60d95e6be758f032716338
      https://github.com/MLton/mlton/commit/8219dd673eecac795c60d95e6be758f032716338
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-29 (Wed, 29 May 2019)

  Changed paths:
    M runtime/gc/profiling.c
    M runtime/gc/sources.c
    M runtime/gc/sources.h

  Log Message:
  -----------
  Rename macros in `sources.h`


  Commit: 50e54cd6eec60827eb8217a26703fd5563fed40f
      https://github.com/MLton/mlton/commit/50e54cd6eec60827eb8217a26703fd5563fed40f
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-29 (Wed, 29 May 2019)

  Changed paths:
    M mlton/backend/ssa-to-rssa.fun

  Log Message:
  -----------
  Drop `MLton_touch` applied to unit during SSA to RSSA


  Commit: 11014af8dbc2d383d00ef1212df9033033dcbca3
      https://github.com/MLton/mlton/commit/11014af8dbc2d383d00ef1212df9033033dcbca3
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-29 (Wed, 29 May 2019)

  Changed paths:
    M mlton/atoms/profile-info.fun
    M mlton/atoms/profile-info.sig
    M mlton/atoms/profile-label.fun
    M mlton/atoms/profile-label.sig
    M mlton/backend/backend.fun
    M mlton/backend/implement-profiling.fun
    M mlton/backend/machine.fun
    M mlton/backend/rssa.fun
    M mlton/backend/rssa.sig

  Log Message:
  -----------
  Additional checking of ProfileInfo in RSSA and Machine IR


  Commit: dac1962ed8d714f30091e5100136ed427987726f
      https://github.com/MLton/mlton/commit/dac1962ed8d714f30091e5100136ed427987726f
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-30 (Thu, 30 May 2019)

  Changed paths:
    M mlton/main/main.fun

  Log Message:
  -----------
  `-profile-stack true` is incompatible with `-const 'Exn.keepHistory true'`


  Commit: 076ac441a5cf274ef09d4277be69870ce473ea5e
      https://github.com/MLton/mlton/commit/076ac441a5cf274ef09d4277be69870ce473ea5e
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-30 (Thu, 30 May 2019)

  Changed paths:
    M mlton/atoms/atoms.fun
    M mlton/atoms/atoms.sig
    R mlton/atoms/profile-info.fun
    R mlton/atoms/profile-info.sig
    A mlton/atoms/source-maps.fun
    A mlton/atoms/source-maps.sig
    M mlton/atoms/sources.cm
    M mlton/atoms/sources.mlb
    M mlton/backend/backend.fun
    M mlton/backend/implement-profiling.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/backend/rssa.fun
    M mlton/backend/rssa.sig
    M mlton/codegen/amd64-codegen/amd64-codegen.fun
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/codegen/x86-codegen/x86-codegen.fun

  Log Message:
  -----------
  Rename `ProfileInfo` to `SourceMaps` to match `sources.h`


  Commit: 2a6f3398f7fa58bd2417d3de2180527bb758c6fa
      https://github.com/MLton/mlton/commit/2a6f3398f7fa58bd2417d3de2180527bb758c6fa
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-30 (Thu, 30 May 2019)

  Changed paths:
    M mlton/codegen/amd64-codegen/amd64-codegen.fun
    M mlton/codegen/x86-codegen/x86-codegen.fun

  Log Message:
  -----------
  Add more robust handling of sourceMaps data in x86/amd64 codegens


  Commit: 060897304cefb98f52a5e687c7f2142b4a1be3d3
      https://github.com/MLton/mlton/commit/060897304cefb98f52a5e687c7f2142b4a1be3d3
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-30 (Thu, 30 May 2019)

  Changed paths:
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Simplify printing of static arrays in C codegen


  Commit: 738bb11d8d6382622ad3d1f76bd51a2562efe368
      https://github.com/MLton/mlton/commit/738bb11d8d6382622ad3d1f76bd51a2562efe368
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-30 (Thu, 30 May 2019)

  Changed paths:
    M mlton/codegen/c-codegen/c-codegen.fun

  Log Message:
  -----------
  Emit `main` function on one line


  Commit: 9ba73ad1e15839afbf0b306a32b344499e462007
      https://github.com/MLton/mlton/commit/9ba73ad1e15839afbf0b306a32b344499e462007
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-05-30 (Thu, 30 May 2019)

  Changed paths:
    M include/common-main.h
    M lib/mlton/basic/hash.sig
    M lib/mlton/basic/hash.sml
    M mlton/atoms/atoms.fun
    M mlton/atoms/atoms.sig
    M mlton/atoms/profile-label.fun
    M mlton/atoms/profile-label.sig
    A mlton/atoms/source-maps.fun
    A mlton/atoms/source-maps.sig
    M mlton/atoms/sources.cm
    M mlton/atoms/sources.mlb
    M mlton/backend/backend.fun
    M mlton/backend/implement-handlers.fun
    M mlton/backend/implement-profiling.fun
    R mlton/backend/implement-profiling.sig
    M mlton/backend/limit-check.fun
    M mlton/backend/machine.fun
    M mlton/backend/machine.sig
    M mlton/backend/rep-type.fun
    M mlton/backend/rssa.fun
    M mlton/backend/rssa.sig
    M mlton/backend/runtime.fun
    M mlton/backend/runtime.sig
    M mlton/backend/signal-check.fun
    M mlton/backend/sources.cm
    M mlton/backend/sources.mlb
    M mlton/backend/ssa-to-rssa.fun
    M mlton/codegen/amd64-codegen/amd64-codegen.fun
    M mlton/codegen/amd64-codegen/amd64-generate-transfers.fun
    M mlton/codegen/amd64-codegen/amd64-pseudo.sig
    M mlton/codegen/amd64-codegen/amd64-translate.fun
    M mlton/codegen/amd64-codegen/amd64.fun
    M mlton/codegen/amd64-codegen/amd64.sig
    M mlton/codegen/c-codegen/c-codegen.fun
    M mlton/codegen/x86-codegen/x86-codegen.fun
    M mlton/codegen/x86-codegen/x86-generate-transfers.fun
    M mlton/codegen/x86-codegen/x86-pseudo.sig
    M mlton/codegen/x86-codegen/x86-translate.fun
    M mlton/codegen/x86-codegen/x86.fun
    M mlton/codegen/x86-codegen/x86.sig
    M mlton/main/compile.fun
    M mlton/main/lookup-constant.fun
    M mlton/main/main.fun
    M runtime/gc.h
    M runtime/gc/call-stack.c
    M runtime/gc/dfs-mark.c
    M runtime/gc/foreach.c
    M runtime/gc/frame.c
    M runtime/gc/frame.h
    M runtime/gc/gc_state.h
    M runtime/gc/init.c
    M runtime/gc/invariant.c
    M runtime/gc/profiling.c
    M runtime/gc/sources.c
    M runtime/gc/sources.h
    M runtime/gc/stack.c
    M runtime/gc/stack.h

  Log Message:
  -----------
  Merge pull request #308 from MatthewFluet/profile-info-updates

Some small updates to profiling/source information.  Highlights:

* Move profiling information into RSSA IR `Program.T`, avoiding the
  need for `ImplementProfiling` to return information out of band.
* Move frame to source sequence index mapping from a separate
  `frameSources` array into the `frameInfos` array.  By including the
  `sourceSeqIndex` in the frame info, frames that share their
  `sourceSeqIndex` and all other frame info fields are automatically
  shared.  With defunctorization and monomorphisation and inlining, it
  is quite possible for distinct blocks of the final RSSA IR program
  to nontheless correspond to the same source location.  This avoids
  unnecessarily creating extraneous frame infos and simplifies the
  logic of when to create unique frame infos.


Compare: https://github.com/MLton/mlton/compare/8f69c3893122...9ba73ad1e158

[MLton-commit] [MLton/mlton] bf9426: Change mutability keyword for SSA2 IR from 'ref' t...

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: bf9426bebb6508cec0073f680b566183b1a72168
      https://github.com/MLton/mlton/commit/bf9426bebb6508cec0073f680b566183b1a72168
  Author: Jason Carr <jca...@gm...>
  Date:   2019-05-30 (Thu, 30 May 2019)

  Changed paths:
    M mlton/ssa/ssa-tree2.fun

  Log Message:
  -----------
  Change mutability keyword for SSA2 IR from 'ref' to 'mut'.

Ref may imply that the field is separately boxed,
whereas in the SSA2 IR, boxing is separate from mutability,
and is instead indicated by 'tuple' or another object type.


  Commit: 8f69c38931222a059cc7acb1aa818c1f5f8c75a5
      https://github.com/MLton/mlton/commit/8f69c38931222a059cc7acb1aa818c1f5f8c75a5
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-05-30 (Thu, 30 May 2019)

  Changed paths:
    M mlton/ssa/ssa-tree2.fun

  Log Message:
  -----------
  Merge pull request #309 from jasoncarr0/ssa2-layout-mut

Change mutability keyword for SSA2 IR from 'ref' to 'mut'.


Compare: https://github.com/MLton/mlton/compare/c3fdc5ace92a...8f69c3893122

[MLton-commit] [MLton/mlton] 06f883: Fix `Chunk<N>` prototype

[Matthew F. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/MLton/mlton
  Commit: 06f8833f69792eea9bf058cff4168ba5f7235a00
      https://github.com/MLton/mlton/commit/06f8833f69792eea9bf058cff4168ba5f7235a00
  Author: Matthew Fluet <mat...@gm...>
  Date:   2019-05-28 (Tue, 28 May 2019)

  Changed paths:
    M include/c-common.h

  Log Message:
  -----------
  Fix `Chunk<N>` prototype

The `stackTop` and `frontier` arguments should be `CPointer`, not `Pointer`.


  Commit: c3fdc5ace92adaec2077b9ae298943c57555a02f
      https://github.com/MLton/mlton/commit/c3fdc5ace92adaec2077b9ae298943c57555a02f
  Author: Matthew Fluet <Mat...@gm...>
  Date:   2019-05-28 (Tue, 28 May 2019)

  Changed paths:
    M include/c-common.h

  Log Message:
  -----------
  Merge pull request #307 from MatthewFluet/fix-chunk-prototype

Fix `Chunk<N>` prototype


Compare: https://github.com/MLton/mlton/compare/1dac1fa61a3f...c3fdc5ace92a