[Bug tree-optimization/58380] [4.9 Regression] ice in fold_comparison

[law at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58380

--- Comment #10 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Wed Sep 11 02:23:48 2013
New Revision: 202489

URL: http://gcc.gnu.org/viewcvs?rev=202489&root=gcc&view=rev
Log:
    PR tree-optimization/58380
    * tree-ssa-threadupdate.c (thread_block): Recognize another case
    of threading through a buried loop header.

    * tree-ssa-threadedge.c (thread_around_empty_blocks): Correct
    return value for single successor case.

    * g++.dg/torture/pr58380.C: New test.

2013-09-10  Jeff Law  <law@redhat.com>

Added:
    trunk/gcc/testsuite/g++.dg/torture/pr58380.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-threadedge.c
    trunk/gcc/tree-ssa-threadupdate.c