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[Bug tree-optimization/62031] [4.8 Regression] Different results between O2 and O2 -fpredictive-commoning
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 27 May 2015 14:21:48 +0000
- Subject: [Bug tree-optimization/62031] [4.8 Regression] Different results between O2 and O2 -fpredictive-commoning
- Auto-submitted: auto-generated
- References: <bug-62031-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62031
--- Comment #17 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed May 27 14:20:48 2015
New Revision: 223759
URL: https://gcc.gnu.org/viewcvs?rev=223759&root=gcc&view=rev
Log:
2015-05-27 Richard Biener <rguenther@suse.de>
PR tree-optimization/66272
Revert parts of
2014-08-15 Richard Biener <rguenther@suse.de>
PR tree-optimization/62031
* tree-data-ref.c (dr_analyze_indices): Do not set
DR_UNCONSTRAINED_BASE.
(dr_may_alias_p): All indirect accesses have to go the
formerly DR_UNCONSTRAINED_BASE path.
* tree-data-ref.h (struct indices): Remove
unconstrained_base member.
(DR_UNCONSTRAINED_BASE): Remove.
* gcc.dg/torture/pr66272.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr66272.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-data-ref.c
trunk/gcc/tree-data-ref.h