[Bug tree-optimization/66101] [5 Regression] internal compiler error: in verify_loop_structure, at cfgloop.c:1662

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66101

--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed May 27 14:05:37 2015
New Revision: 223757

URL: https://gcc.gnu.org/viewcvs?rev=223757&root=gcc&view=rev
Log:
2015-05-27  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2015-05-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/66101
        * tree-ssa-dce.c (remove_dead_stmt): Properly mark loops for
        fixup if we turn a loop exit edge to a fallthru edge.

        * gcc.dg/torture/pr66101.c: New testcase.

Added:
    branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr66101.c
Modified:
    branches/gcc-5-branch/gcc/ChangeLog
    branches/gcc-5-branch/gcc/testsuite/ChangeLog
    branches/gcc-5-branch/gcc/tree-ssa-dce.c