[Bug tree-optimization/61964] [4.8/4.9/4.10 regression] krb5 database propagation enters infinite loop; reduced test case

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61964

--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Jul 31 14:06:59 2014
New Revision: 213375

URL: https://gcc.gnu.org/viewcvs?rev=213375&root=gcc&view=rev
Log:
2014-07-31  Richard Biener  <rguent...@suse.de>

    PR tree-optimization/61964
    * tree-ssa-tail-merge.c (gimple_equal_p): Handle non-SSA LHS solely
    by structural equality.

    * gcc.dg/torture/pr61964.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr61964.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-tail-merge.c