git.ipfire.org Git - thirdparty/gcc.git/commit

author	Richard Biener <rguenther@suse.de>
	Mon, 9 Mar 2015 13:54:28 +0000 (13:54 +0000)
committer	Richard Biener <rguenth@gcc.gnu.org>
	Mon, 9 Mar 2015 13:54:28 +0000 (13:54 +0000)
commit	e0808638812e20b756052ed8a816528db69b5a08
tree	08c44e058e8dabba9e5cd87ddd2f888817f638da	tree \| snapshot
parent	d2e0c00b8c88ccc32d121839b18963a3657512aa	commit \| diff

re PR ipa/65270 (issues with merging memory accesses from different code paths)

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.

From-SVN: r221281

gcc/ChangeLog		diff \| blob \| blame \| history
gcc/fold-const.c		diff \| blob \| blame \| history
gcc/testsuite/ChangeLog		diff \| blob \| blame \| history
gcc/testsuite/gcc.dg/torture/pr65270-1.c	[new file with mode: 0644]	blob
gcc/testsuite/gcc.dg/torture/pr65270-2.c	[new file with mode: 0644]	blob
gcc/tree-core.h		diff \| blob \| blame \| history