[Bug tree-optimization/33604] [4.3 Regression] Revision 119502 causes significantly slower results with 4.3 compared to 4.2

[rguenth at gcc dot gnu dot org]

------- Comment #23 from rguenth at gcc dot gnu dot org  2007-11-09 12:32 -------
Subject: Bug 33604

Author: rguenth
Date: Fri Nov  9 12:32:20 2007
New Revision: 130040

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130040
Log:
2007-11-09  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/33604
        * tree-ssa-forwprop.c (tree_ssa_forward_propagate_single_use_vars):
        Disregard changes in CV qualifiers of pointed to types for
        forward propagating ADDR_EXPRs.
        * tree-ssa-ccp.c (fold_stmt_r): Preserve volatileness of the original
        expression.

        * g++.dg/tree-ssa/pr33604.C: New testcase.
        * gcc.dg/pr32721.c: Adjust pattern.

Added:
    trunk/gcc/testsuite/g++.dg/tree-ssa/pr33604.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/pr32721.c
    trunk/gcc/tree-ssa-ccp.c
    trunk/gcc/tree-ssa-forwprop.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33604