[Bug tree-optimization/71881] [6 Regression] ICE on valid code at -O3 with -g enabled on x86_64-linux-gnu: cannot update SSA form

["rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71881

--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Aug  9 10:49:36 2016
New Revision: 239277

URL: https://gcc.gnu.org/viewcvs?rev=239277&root=gcc&view=rev
Log:
2016-08-09  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2016-08-09  Richard Biener  <rguenther@suse.de>

        PR ipa/68273
        * ipa-prop.c (ipa_modify_formal_parameters): Build
        parameter types with natural alignment also for the
        over-aligned case.

        2016-07-15  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/71881
        * tree-loop-distribution.c (destroy_loop): Remove blocks in
        reverse DOM order to make debug temp generation happy.

        * gcc.dg/torture/pr71881.c: New testcase.

Added:
    branches/gcc-6-branch/gcc/testsuite/gcc.dg/torture/pr71881.c
Modified:
    branches/gcc-6-branch/gcc/ChangeLog
    branches/gcc-6-branch/gcc/ipa-prop.c
    branches/gcc-6-branch/gcc/testsuite/ChangeLog
    branches/gcc-6-branch/gcc/tree-loop-distribution.c