r178683 - in /trunk/gcc: ChangeLog testsuite/Ch...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Thu Sep  8 09:21:39 2011
New Revision: 178683

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=178683
Log:
2011-09-08  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/19831
	* tree-ssa-dce.c (mark_stmt_if_obviously_necessary): Do not mark
	allocation functions as necessary.

	* gcc.dg/tree-ssa/ssa-dce-8.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-dce-8.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-dce.c