[Bug middle-end/43464] copy prop breaks loop closed SSA form

[spop at gcc dot gnu dot org]

------- Comment #15 from spop at gcc dot gnu dot org  2010-03-31 18:38 -------
Subject: Bug 43464

Author: spop
Date: Wed Mar 31 18:37:41 2010
New Revision: 157889

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=157889
Log:
Fix PR43464: copyprop should maintain loop close phi nodes with multiple
arguments.

2010-03-30  Richard Guenther  <rguent...@suse.de>
            Zdenek Dvorak  <o...@ucw.cz>
            Sebastian Pop  <sebastian....@amd.com>

        PR middle-end/43464
        * tree-ssa-copy.c (init_copy_prop): Handle loop close phi nodes
        with multiple arguments.
        (execute_copy_prop): Remove call to rewrite_into_loop_closed_ssa.

Modified:
    trunk/gcc/ChangeLog.graphite
    trunk/gcc/tree-ssa-copy.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43464