r174282 - in /trunk/gcc: ChangeLog testsuite/Ch...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Thu May 26 13:01:48 2011
New Revision: 174282

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=174282
Log:
2011-05-26  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/48702
	* tree-ssa-address.c (create_mem_ref_raw): Create MEM_REFs
	only when we know the base address is within bounds.
	* tree-ssa-alias.c (indirect_ref_may_alias_decl_p): Do not
	assume the base address of TARGET_MEM_REFs is in bounds.

	* gcc.dg/torture/pr48702.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr48702.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-address.c
    trunk/gcc/tree-ssa-alias.c