r134314 - in /trunk/gcc: ChangeLog tree-ssa-scc...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Tue Apr 15 13:28:08 2008
New Revision: 134314

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=134314
Log:
2008-04-15  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-sccvn.h (vn_reference_lookup): Adjust prototype.
	* tree-ssa-sccvn.c (vn_reference_lookup): New parameter maywalk.
	(visit_reference_op_load): Do walk vuse-vdef chains on
	vn_reference_lookup.
	(visit_reference_op_store): But do not here.
	* tree-vn.c (vn_lookup): Do not walk vuse-vdef chains on
	vn_reference_lookup.
	(vn_lookup_with_vuses): But do so here.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-ssa-sccvn.c
    trunk/gcc/tree-ssa-sccvn.h
    trunk/gcc/tree-vn.c