r139754 - in /trunk/gcc: ChangeLog testsuite/Ch...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Fri Aug 29 08:36:10 2008
New Revision: 139754

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=139754
Log:
2008-08-29  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/37207
	* tree-vrp.c (extract_range_from_binary_expr): Also try
	to constant fold if only one of the operands is a constant.

	* gcc.dg/tree-ssa/vrp46.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/vrp46.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vrp.c