r195755 - in /branches/gcc-4_7-branch/gcc: Chan...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Tue Feb  5 12:56:51 2013
New Revision: 195755

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=195755
Log:
2013-02-05  Richard Biener  <rguenther@suse.de>

	Backport from mainline
	2012-12-10  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/55107
	* tree-ssa-pre.c (struct pre_stats): Remove constified field.
	(bitmap_set_replace_value): Add gcc_unreachable.
	(do_regular_insertion): Re-write all_same handling.  Insert
	an assignment instead of a PHI in this case.
	(execute_pre): Do not record constified events.

	* gcc.dg/torture/pr55107.c: New testcase.
	* gcc.dg/tree-ssa/ssa-pre-5.c: Adjust.

Added:
    branches/gcc-4_7-branch/gcc/testsuite/gcc.dg/torture/pr55107.c
Modified:
    branches/gcc-4_7-branch/gcc/ChangeLog
    branches/gcc-4_7-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_7-branch/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-5.c
    branches/gcc-4_7-branch/gcc/tree-ssa-pre.c