[Bug tree-optimization/22555] array in struct disables salias subvars for other fields

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

------- Comment #5 from rguenth at gcc dot gnu dot org  2006-01-05 15:30 -------
Subject: Bug 22555

Author: rguenth
Date: Thu Jan  5 15:30:44 2006
New Revision: 109381

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=109381
Log:
2006-01-05  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/22555
        * tree-ssa-alias.c (create_overlap_variables_for): Do not give up,
        if one structure field is an array.
        * tree-ssa-operands.c (get_expr_operands): Continue scanning
        operands even if we found a subvar, but ignore VOPs in this
        case.
        * tree-ssa-loop-ivopts.c (rewrite_use): Mark new vars in stmt
        for renaming.
        * tree-ssa-loop.c (pass_iv_optimize): Schedule TODO_update_ssa.

        * gcc.dg/tree-ssa/alias-3.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/alias-3.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-alias.c
    trunk/gcc/tree-ssa-loop-ivopts.c
    trunk/gcc/tree-ssa-loop.c
    trunk/gcc/tree-ssa-operands.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22555