[Bug tree-optimization/44030] [4.6 Regression] error: SSA name in freelist but still referenced

[rguenth at gcc dot gnu dot org]

------- Comment #4 from rguenth at gcc dot gnu dot org  2010-05-08 13:13 -------
Subject: Bug 44030

Author: rguenth
Date: Sat May  8 13:12:56 2010
New Revision: 159186

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=159186
Log:
2010-05-08  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/44030
        * tree-ssa-pre.c (eliminate): Copy NECESSARY flag.  Set
        NECESSARY flag if we propagate from a inserted expression.

        * gcc.c-torture/compile/pr44030.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr44030.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-pre.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44030