[Bug middle-end/53144] [4.7/4.8 Regression] PPRE infinite loop

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53144

--- Comment #10 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-05-03 08:49:09 UTC ---
Author: rguenth
Date: Thu May  3 08:49:03 2012
New Revision: 187080

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=187080
Log:
2012-05-03  Richard Guenther  <rguenther@suse.de>

    PR tree-optimization/53144
    * tree-ssa-sccvn.c (vn_reference_lookup_or_insert_constant_for_pieces):
    Rename to ...
    (vn_reference_lookup_or_insert_for_pieces): ... this.  Properly deal
    with SSA name values.
    (vn_reference_lookup_3): Adjust callers.

    * gcc.dg/torture/pr53144.c: New testcase.

Added:
    branches/gcc-4_7-branch/gcc/testsuite/gcc.dg/torture/pr53144.c
Modified:
    branches/gcc-4_7-branch/gcc/ChangeLog
    branches/gcc-4_7-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_7-branch/gcc/tree-ssa-sccvn.c