[Bug middle-end/26198] Unfolded comparison after cfg_cleanup

["rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #7 from rguenth at gcc dot gnu dot org  2007-10-12 08:42 -------
Subject: Bug 26198

Author: rguenth
Date: Fri Oct 12 08:42:13 2007
New Revision: 129256

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=129256
Log:
2007-10-12  Richard Guenther  <rguenther@suse.de>

        PR middle-end/26198
        * tree-ssa-forwprop.c (can_propagate_from): Do not propagate from
        a rhs with side-effects or which is a load.
        (forward_propagate_into_cond): Also try combining both operands.

        * gcc.dg/tree-ssa/forwprop-3.c: New testcase.
        * gcc.c-torture/execute/20071011-1.c: Likewise.
        * gcc.dg/tree-ssa/ssa-pre-9.c: Adjust.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/20071011-1.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/forwprop-3.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-9.c
    trunk/gcc/tree-ssa-forwprop.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26198