[Bug tree-optimization/71802] [7 Regression] gcc ICE at -O3 on valid code on x86_64-linux-gnu in expand_LOOP_VECTORIZED

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71802

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Aug  9 07:40:50 2016
New Revision: 239274

URL: https://gcc.gnu.org/viewcvs?rev=239274&root=gcc&view=rev
Log:
2016-08-09  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/71802
        * tree-cfgcleanup.c (cleanup_tree_cfg_bb): Make sure to catch
        all merge opportunities with the predecessor.

        * gcc.dg/torture/pr71802.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr71802.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-cfgcleanup.c