[Bug tree-optimization/43783] [4.5 Regression] -O -ftree-pre options compile libbid wrong

[rguenth at gcc dot gnu dot org]

------- Comment #11 from rguenth at gcc dot gnu dot org  2010-04-20 09:05 -------
Subject: Bug 43783

Author: rguenth
Date: Tue Apr 20 09:05:33 2010
New Revision: 158549

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=158549
Log:
2010-04-20  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/43783
        * tree-ssa-pre.c (create_component_ref_by_pieces_1): Drop
        constant ARRAY_REF operands two and three if possible.

        * gcc.c-torture/execute/pr43783.c: New testcase.

Added:
    branches/gcc-4_5-branch/gcc/testsuite/gcc.c-torture/execute/pr43783.c
Modified:
    branches/gcc-4_5-branch/gcc/ChangeLog
    branches/gcc-4_5-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_5-branch/gcc/tree-ssa-pre.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43783