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#10 Use hardware ops for bitwise functions

0.2.5
accepted
Alexander Vdolainen
optimization (2) bitwise (1) autotools (2)
2019-05-21
2019-05-12
Alexander Vdolainen
No

Subj,
for x86 and for ARM (clz).
There are a plenty ways to do so:

  • gcc builtin function
  • inline asm

My purpose is to use this lib on MCU without any modification (as I'm doing now). Other purpose is to build this lib on non-posix system i.e. windows with vc.

Well, there are a few things to do:

  • add autotools tests for gcc builtins
  • add autotools tests for arch and/or add option to select arch
  • use/implement arch specific functions within a code

CAS is a good example of this (but not complete since it fully depends on GCC).

Discussion

  • Alexander Vdolainen

    Alexander Vdolainen - 2019-05-12
    • labels: optimization, bitwise --> optimization, bitwise, autotools
    • summary: Provide hw-accel. functions for bitwise ops --> Use hardware ops for bitwise functions
    • Description has changed:

    Diff:

    --- old
+++ new
@@ -1,2 +1,14 @@
 Subj,
 for x86 and for ARM (clz).
+There are a plenty ways to do so:
+*  gcc builtin function
+*  inline asm
+ 
+ My purpose is to use this lib on MCU without any modification (as I'm doing now). Other purpose is to build this lib on non-posix system i.e. windows with vc.
+ 
+ Well, there are a few things to do:
+*  add autotools tests for gcc builtins
+*  add autotools tests for arch and/or add option to select arch
+*  use/implement arch specific functions within a code
+ 
+ CAS is a good example of this (but not complete since it fully depends on GCC).
     

  • Alexander Vdolainen

    Alexander Vdolainen - 2019-05-12
    • Description has changed:

    Diff:

    --- old
+++ new
@@ -1,12 +1,14 @@
 Subj,
 for x86 and for ARM (clz).
 There are a plenty ways to do so:
+
 *  gcc builtin function
 *  inline asm

  My purpose is to use this lib on MCU without any modification (as I'm doing now). Other purpose is to build this lib on non-posix system i.e. windows with vc.

  Well, there are a few things to do:
+
 *  add autotools tests for gcc builtins
 *  add autotools tests for arch and/or add option to select arch
 *  use/implement arch specific functions within a code
     

  • Alexander Vdolainen

    Alexander Vdolainen - 2019-05-21
    • status: open --> accepted
    • assigned_to: Alexander Vdolainen
     

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