[Bug tree-optimization/37542] [4.4 Regression] PRE doesn't simplify during phi-translation

[rguenth at gcc dot gnu dot org]

------- Comment #6 from rguenth at gcc dot gnu dot org  2008-11-02 15:27 -------
Subject: Bug 37542

Author: rguenth
Date: Sun Nov  2 15:26:04 2008
New Revision: 141534

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=141534
Log:
2008-11-02  Richard Guenther  <[EMAIL PROTECTED]>

        PR tree-optimization/37542
        * tree-ssa-pre.c (fully_constant_expression): Handle more cases.
        * tree-ssa-sccvn.c (vn_get_expr_for): Fix typo.
        (vn_nary_op_lookup_stmt): Adjust for unary reference trees.
        (vn_nary_op_insert_stmt): Likewise.
        (visit_use): Likewise.

        * gcc.dg/tree-ssa/ssa-pre-22.c: New testcase.
        * gcc.c-torture/compile/20081101-1.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/20081101-1.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-22.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-pre.c
    trunk/gcc/tree-ssa-sccvn.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37542