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[Bug tree-optimization/36792] [4.4 Regression] Revision 137631 causes many failures



------- Comment #4 from rguenth at gcc dot gnu dot org  2008-07-17 15:55 -------
Subject: Bug 36792

Author: rguenth
Date: Thu Jul 17 15:54:27 2008
New Revision: 137927

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=137927
Log:
2008-07-16  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/36792
        * tree-ssa-pre.c (get_or_alloc_expr_for): Handle unary
        expressions inserted by SCCVN.
        (do_SCCVN_insertion): Adjust comment.
        (execute_pre): Allow insertion for FRE again.

        * tree-ssa-sccvn.c (simplify_unary_expression): Deal with
        the GIMPLE_SINGLE_RHS statemens we get.
        (init_scc_vn): Init VN_INFO->expr to NULL.

Modified:
    branches/gimple-tuples-branch/gcc/ChangeLog.tuples
    branches/gimple-tuples-branch/gcc/tree-ssa-pre.c
    branches/gimple-tuples-branch/gcc/tree-ssa-sccvn.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36792


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