[Bug tree-optimization/56321] [4.8 Regression] ICE:segfault in midend for -funsafe-math-optimizations -O3

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56321

--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> 2013-02-18 12:11:59 UTC ---
Author: rguenth
Date: Mon Feb 18 12:11:47 2013
New Revision: 196117

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=196117
Log:
2013-02-18  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/56321
    * tree-ssa-reassoc.c (propagate_op_to_single_use): Properly
    order SSA name release and virtual operand unlinking.

    * gcc.dg/torture/pr56321.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr56321.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-reassoc.c