[Bug tree-optimization/53168] ICE in find_or_generate_expression, at tree-ssa-pre.c:3053

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53168

--- Comment #6 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-05-04 11:30:39 UTC ---
Author: rguenth
Date: Fri May  4 11:30:35 2012
New Revision: 187153

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=187153
Log:
2012-05-04  Richard Guenther  <rguenther@suse.de>

    PR tree-optimization/53168
    * tree-ssa-pre.c (phi_translate_1): Only handle type-punned
    memory reads when the result is a constant we can pun.

    * gcc.dg/torture/pr53168.c: New testcase.
    * gcc.dg/tree-ssa/ssa-pre-30.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr53168.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-30.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-pre.c