[Bug tree-optimization/31146] forwprop does not look through casts

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

------- Comment #9 from rguenth at gcc dot gnu dot org  2007-05-02 10:13 -------
Subject: Bug 31146

Author: rguenth
Date: Wed May  2 09:12:49 2007
New Revision: 124349

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=124349
Log:
2007-05-02  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/31146
        * tree-ssa-forwprop.c (forward_propagate_addr_expr_1): New
        argument, single_use_p.  If we have a single use that is
        a conversion to the definition rhs type, propagate that rhs.
        (forward_propagate_addr_expr): Pass single_use_p argument
        to forward_propagate_addr_expr_1.

        * g++.dg/tree-ssa/pr31146-2.C: New testcase.

Added:
    trunk/gcc/testsuite/g++.dg/tree-ssa/pr31146-2.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-forwprop.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31146