[Bug tree-optimization/58955] [4.9 Regression] wrong code at -O3 on x86_64-linux-gnu

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58955

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Nov  8 08:44:02 2013
New Revision: 204561

URL: http://gcc.gnu.org/viewcvs?rev=204561&root=gcc&view=rev
Log:
2013-11-08  Richard Biener  <rguent...@suse.de>

    PR tree-optimization/59038
    PR tree-optimization/58955
    * tree-loop-distribution.c (pg_add_dependence_edges): Revert
    previous change.  Handle known dependences correctly.

    * gcc.dg/torture/pr59038.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr59038.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-loop-distribution.c