r196855 - in /trunk/gcc: ChangeLog testsuite/Ch...

[law@gcc.gnu.org]

Author: law
Date: Thu Mar 21 04:42:40 2013
New Revision: 196855

URL: http://gcc.gnu.org/viewcvs?rev=196855&root=gcc&view=rev
Log:
	* tree-ssa-dom.c (record_equivalences_from_incoming_edge): Record
	addititional equivalences for equality comparisons between an SSA_NAME
	and a constant where the SSA_NAME was set from a widening conversion.

	* g++.dg/tree-ssa/ssa-dom.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/tree-ssa/ssa-dom.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-dom.c