[Bug tree-optimization/50767] [4.7 Regression] ICE: in refs_may_alias_p_1, at tree-ssa-alias.c:1004 with -O2 -fno-tree-copy-prop -fno-tree-dominator-opts

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50767

--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-10-18 11:44:22 UTC ---
Author: rguenth
Date: Tue Oct 18 11:44:15 2011
New Revision: 180134

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=180134
Log:
2011-10-18  Richard Guenther  <rguenther@suse.de>

    PR tree-optimization/50767
    * tree-ssa-pre.c (create_expression_by_pieces): Update the
    folded statement.

    * gcc.dg/torture/pr50767.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr50767.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-pre.c