[Bug tree-optimization/27548] [4.2 regression] ICE: SSA corruption - Conflict across an abnormal edge

[jakub at gcc dot gnu dot org]

------- Comment #7 from jakub at gcc dot gnu dot org  2006-05-17 08:28 -------
Subject: Bug 27548

Author: jakub
Date: Wed May 17 08:27:57 2006
New Revision: 113844

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=113844
Log:
2006-05-17  Zdenek Dvorak  <dvorakz@suse.cz>

        PR tree-optimization/27548
        * tree-scalar-evolution.c (scev_const_prop): Do not prolong life
        range of ssa names that appear on abnormal edges.
        * tree-ssa-loop-ivopts.c (contains_abnormal_ssa_name_p): Export.
        * tree-flow.h (contains_abnormal_ssa_name_p): Declare.

2006-05-17  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/27548
        * g++.dg/tree-ssa/pr27548.C: New test.

Added:
    branches/gcc-4_1-branch/gcc/testsuite/g++.dg/tree-ssa/pr27548.C
Modified:
    branches/gcc-4_1-branch/gcc/ChangeLog
    branches/gcc-4_1-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_1-branch/gcc/tree-flow.h
    branches/gcc-4_1-branch/gcc/tree-scalar-evolution.c
    branches/gcc-4_1-branch/gcc/tree-ssa-loop-ivopts.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27548