r221281 - in /trunk/gcc: ChangeLog fold-const.c...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Mon Mar  9 13:54:28 2015
New Revision: 221281

URL: https://gcc.gnu.org/viewcvs?rev=221281&root=gcc&view=rev
Log:
2015-03-09  Richard Biener  <rguenther@suse.de>

	PR middle-end/65270
	* tree-core.h (enum operand_equal_flag): Add OEP_ADDRESS_OF.
	* fold-const.c (operand_equal_p): When recursing for ADDR_EXPRs
	operand set OEP_ADDRESS_OF.  Clear it when recursing to non-bases
	of that.  When comparing dereferences compare alignment.
	When comparing MEM_REFs or TARGET_MEM_REFs compare dependence info.

	* gcc.dg/torture/pr65270-1.c: New testcase.
	* gcc.dg/torture/pr65270-2.c: Likewise. 

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr65270-1.c
    trunk/gcc/testsuite/gcc.dg/torture/pr65270-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-core.h