Steel Bank Common Lisp

Update of /cvsroot/sbcl/sbcl
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv5388

Modified Files:
	version.lisp-expr 
Log Message:
0.8.8.10:
	MORE MICRO-OPTIMIZATION
	... renumber all widetags.  (LESS BINARY-COMPATIBILITY)
	... implement some smarter type tag checking on the x86.

	The smarter type checking comes in several flavours.

	* If we have two adjacent lowtags, in three cases out of four
	  we can do "and, cmp, branch", rather than 
	  "cmp, branch, cmp, branch";
	* If we have two lowtags that are unadjacent but differ by
	  just one bit, we can likewise do "and, cmp, branch" rather 
	  than "cmp, branch, cmp, branch";
	* If we have a contiguous range of lowtags that includes the
	  most positive lowtag, we do not need to test the upper bound;
	* If we have four lowtags with only two bits different, we can
	  do "and, cmp, branch" rather than *four* "cmp, branch" pairs.

	This change will conflict with ongoing 64-bit ports.  The 
	conflict is resolvable (there are enough widetags in the "array"
	range (which in practice is 130 - 254; currently there are five
	in this range unused (or three with long-float arrays)


Index: version.lisp-expr
===================================================================
RCS file: /cvsroot/sbcl/sbcl/version.lisp-expr,v
retrieving revision 1.1483
retrieving revision 1.1484
diff -u -d -r1.1483 -r1.1484
--- version.lisp-expr	1 Mar 2004 21:32:42 -0000	1.1483
+++ version.lisp-expr	1 Mar 2004 23:22:25 -0000	1.1484
@@ -17,4 +17,4 @@
 ;;; checkins which aren't released. (And occasionally for internal
 ;;; versions, especially for internal versions off the main CVS
 ;;; branch, it gets hairier, e.g. "0.pre7.14.flaky4.13".)
-"0.8.8.9"
+"0.8.8.10"