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

[dnovillo@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	tree-ssa-20020619-branch
Changes by:	dnovillo@gcc.gnu.org	2003-10-21 02:18:39

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

Log message:
	Fix PR optimization/12688
	* tree-dfa.c (get_stmt_operands): Don't return early when dealing
	with an empty statement.
	* tree-ssa-ccp.c (set_rhs): If the expression has no side effects,
	replace the statement with an empty statement.

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=1.1.2.766&r2=1.1.2.767
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-dfa.c.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.4.173&r2=1.1.4.174
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=1.1.2.103&r2=1.1.2.104