[Bug tree-optimization/83126] [8 Regression] ICE in transform_to_exit_first_loop_alt, at tree-parloops.c:1713

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83126

--- Comment #11 from Tom de Vries <vries at gcc dot gnu.org> ---
Author: vries
Date: Wed Mar 21 12:25:03 2018
New Revision: 258713

URL: https://gcc.gnu.org/viewcvs?rev=258713&root=gcc&view=rev
Log:
[parloops] Handle canonicalize_loop_ivs failure

2018-03-21  Tom de Vries  <tom@codesourcery.com>

        PR tree-optimization/83126
        * tree-parloops.c (num_phis): New function.
        (gen_parallel_loop): Detect and handle canonicalize_loop_ivs failure.

        * gcc.dg/graphite/pr83126.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/graphite/pr83126.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-parloops.c