gcc/gcc ChangeLog.tree-ssa tree-flow.h tree-ss ...

[law@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	tree-ssa-20020619-branch
Changes by:	law@gcc.gnu.org	2003-02-14 22:16:30

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

Log message:
	* tree-flow.h (struct stmt_ann_d): Add new field in_ccp_worklist.
	* tree-ssa-ccp.c (simulate_stmt): Renamed from simulate_def_use_edges.
	(add_var_to_ssa_edges_worklist): New function.  Only add statements
	to the ssa_edges worklist if they are not already on the worklist.
	(def_to_undefined, def_to_varying, set_lattice_value)
	(tree_ssa_ccp): Only reevaluate the statement if in_ccp_worklist
	is set for the element popped off the ssa_edges worklist.
	(simulate_statement): Simplify now that ssa_edges is a worklist
	of statements to reevaluate rather than a worklist of defs
	that need their immediate uses reevaluated.
	(visit_stmt): Clear in_ccp_worklist.

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=1.1.2.235&r2=1.1.2.236
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-flow.h.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.4.56&r2=1.1.4.57
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=1.1.2.50&r2=1.1.2.51