gcc/gcc ChangeLog.tree-ssa tree-ssa-ccp.c

[law@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	tree-ssa-20020619-branch
Changes by:	law@gcc.gnu.org	2003-02-14 05:30:47

Modified files:
	gcc            : ChangeLog.tree-ssa tree-ssa-ccp.c 

Log message:
	* tree-ssa-ccp.c (may_fold_p): New function.  Returns nonzero if
	the given statement may fold after replacement of operands with
	constants.
	(evaluate_stmt): Only create a copy of the statement if there is
	a reasonable chance the statement will fold.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.tree-ssa.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.2.230&r2=1.1.2.231
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-ccp.c.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.2.45&r2=1.1.2.46