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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/62031] [4.8/4.9/5 Regression] Different results between O2 and O2 -fpredictive-commoning
Date: Fri, 15 Aug 2014 07:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62031

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Aug 15 07:50:40 2014
New Revision: 214006

URL: https://gcc.gnu.org/viewcvs?rev=214006&root=gcc&view=rev
Log:
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/pr62031.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr62031.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-data-ref.c
    trunk/gcc/tree-data-ref.h