r132768 - in /trunk/gcc: ChangeLog tree-ssa-pre...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Fri Feb 29 14:01:09 2008
New Revision: 132768

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=132768
Log:
2008-02-29  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-pre.c (get_sccvn_value): Create missing VNs via
	vn_lookup_or_add.
	* tree-ssa-sccnv.c (visit_reference_op_store): Use the rhs
	value for comparing for a store match.
	(simplify_unary_expression): Do nothing for SSA_NAMEs.
	(try_to_simplify): Do not do a full-blown reference lookup.

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