[Bug tree-optimization/69574] [4.9 Regression] gcc ICE at -O2 and -O3 on x86_64-linux-gnu in hide_evolution_in_other_loops_than_loop

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69574

--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 12 14:04:29 2016
New Revision: 233378

URL: https://gcc.gnu.org/viewcvs?rev=233378&root=gcc&view=rev
Log:
2016-02-12  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2016-02-09  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/69715
        * tree-ssa.c (execute_update_addresses_taken): Mark non-decl
        LHS on calls as non-rewritable.

        * gcc.dg/torture/pr69715.c: New testcase.

        2016-02-01  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/69579
        * tree-ssa-loop-ivcanon.c (propagate_constants_for_unrolling):
        Do not propagate through abnormal PHI results.

        * gcc.dg/setjmp-6.c: New testcase.

        2016-02-01  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/69574
        * tree-chrec.c (hide_evolution_in_other_loops_than_loop): Instead
        of asserting return chrec_dont_know.

        * gcc.dg/torture/pr69574.c: New testcase.

Added:
    branches/gcc-4_9-branch/gcc/testsuite/gcc.dg/setjmp-6.c
    branches/gcc-4_9-branch/gcc/testsuite/gcc.dg/torture/pr69574.c
    branches/gcc-4_9-branch/gcc/testsuite/gcc.dg/torture/pr69715.c
Modified:
    branches/gcc-4_9-branch/gcc/ChangeLog
    branches/gcc-4_9-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_9-branch/gcc/tree-chrec.c
    branches/gcc-4_9-branch/gcc/tree-ssa-loop-ivcanon.c
    branches/gcc-4_9-branch/gcc/tree-ssa.c