r196263 - in /trunk/gcc: ChangeLog testsuite/Ch...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Mon Feb 25 15:31:31 2013
New Revision: 196263

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=196263
Log:
2013-02-25  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/56175
	* tree-ssa-forwprop.c (hoist_conversion_for_bitop_p): New predicate,
	split out from ...
	(simplify_bitwise_binary): ... here.  Also guard the conversion
	of (type) X op CST to (type) (X op ((type-x) CST)) with it.

	* gcc.dg/tree-ssa/forwprop-24.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/forwprop-24.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-forwprop.c