[Bug tree-optimization/81987] [8 Regression] ICE in verify_ssa with -O3 -march=skylake-avx512

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81987

--- Comment #10 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Author: wschmidt
Date: Wed Sep  6 18:44:51 2017
New Revision: 251816

URL: https://gcc.gnu.org/viewcvs?rev=251816&root=gcc&view=rev
Log:
[gcc]

2017-09-06  Bill Schmidt  <wschm...@linux.vnet.ibm.com>

        Backport from mainline:
        2017-08-30  Bill Schmidt  <wschm...@linux.vnet.ibm.com>

        PR tree-optimization/81987
        * gimple-ssa-strength-reduction.c (insert_initializers): Don't
        insert an initializer in a location not dominated by the stride
        definition.

[gcc/testsuite]

2017-09-06  Bill Schmidt  <wschm...@linux.vnet.ibm.com>

        Backport from mainline:
        2017-08-30  Bill Schmidt  <wschm...@linux.vnet.ibm.com>

        PR tree-optimization/81987
        * g++.dg/torture/pr81987.C: New file.


Added:
    branches/gcc-6-branch/gcc/testsuite/g++.dg/torture/pr81987.C
Modified:
    branches/gcc-6-branch/gcc/ChangeLog
    branches/gcc-6-branch/gcc/gimple-ssa-strength-reduction.c
    branches/gcc-6-branch/gcc/testsuite/ChangeLog