[Bug rtl-optimization/25654] [4.0/4.1/4.2 Regression] RTL alias analysis unprepared to handle stack slot sharing

[rguenth at gcc dot gnu dot org]

------- Comment #15 from rguenth at gcc dot gnu dot org  2006-01-23 09:50 -------
Subject: Bug 25654

Author: rguenth
Date: Mon Jan 23 09:50:07 2006
New Revision: 110110

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=110110
Log:
2006-01-23  Steven Bosscher  <stevenb.gcc@gmail.com>
        Jan Hubicka  <jh@suse.cz>
        Richard Guenther  <rguenther@suse.de>

        PR rtl-optimization/25654
        * cfgexpand.c (aggregate_contains_union_type): New function.
        (add_alias_set_conflicts): Call it.  Make sure to add conflicts
        for structure variables that contain a union type.

        * gcc.dg/torture/pr25654.c: New testcase.
        * gcc.target/i386/pr25654.c: Likewise.

Added:
    branches/gcc-4_1-branch/gcc/testsuite/gcc.dg/torture/pr25654.c
    branches/gcc-4_1-branch/gcc/testsuite/gcc.target/i386/pr25654.c
Modified:
    branches/gcc-4_1-branch/gcc/ChangeLog
    branches/gcc-4_1-branch/gcc/cfgexpand.c
    branches/gcc-4_1-branch/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25654