r180340 - in /trunk/gcc: ChangeLog fold-const.c...

[ebotcazou@gcc.gnu.org]

Author: ebotcazou
Date: Sun Oct 23 15:57:09 2011
New Revision: 180340

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=180340
Log:
	* fold-const.c (invert_tree_comparison): Always invert EQ_EXPR/NE_EXPR.

	PR tree-optimization/44683
	* tree-ssa-dom.c (record_edge_info): Record simple equivalences only if
	we can be sure that there are no signed zeros involved.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/tree-ssa-dom.c