[Bug tree-optimization/69109] [6 Regression] missing phi argument ICE in transform_to_exit_first_loop_alt with -O2 -funswitch-loops -ftree-parallelize-loops=2

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69109

--- Comment #5 from vries at gcc dot gnu.org ---
Author: vries
Date: Mon Jan 11 09:38:28 2016
New Revision: 232212

URL: https://gcc.gnu.org/viewcvs?rev=232212&root=gcc&view=rev
Log:
Don't allow latch with phi in try_transform_to_exit_first_loop_alt

2016-01-11  Tom de Vries  <tom@codesourcery.com>

        PR tree-optimization/69109
        * tree-parloops.c (try_transform_to_exit_first_loop_alt): Don't allow
        latch with phi.

        * gcc.dg/autopar/pr69109-2.c: New test.
        * gcc.dg/autopar/pr69109.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/autopar/pr69109-2.c
    trunk/gcc/testsuite/gcc.dg/autopar/pr69109.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-parloops.c