[Bug tree-optimization/71261] [7 Regression] Trunk GCC hangs on knl and broadwell targets

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71261

--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed May 25 11:49:03 2016
New Revision: 236701

URL: https://gcc.gnu.org/viewcvs?rev=236701&root=gcc&view=rev
Log:
2016-05-25  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/71261
        * tree-if-conv.c (ifcvt_split_def_stmt): Walk uses on the
        interesting stmt instead of immediate uses when looking
        for the use operand to replace.

        * c-c++-common/torture/pr71261.c: New testcase.

Added:
    trunk/gcc/testsuite/c-c++-common/torture/pr71261.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-if-conv.c