[Bug middle-end/44852] [4.6 Regression]: miscompilation (of e.g. newlib dtoa.c) after mem-ref2 merge

[rguenth at gcc dot gnu dot org]

------- Comment #7 from rguenth at gcc dot gnu dot org  2010-07-09 11:24 -------
Subject: Bug 44852

Author: rguenth
Date: Fri Jul  9 11:24:09 2010
New Revision: 161994

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=161994
Log:
2010-07-09  Richard Guenther  <rguent...@suse.de>

        PR tree-optimization/44852
        * tree-ssa-alias.c: Include toplev.h for exact_log2.
        (indirect_ref_may_alias_decl_p): Properly handle negative offsets
        in MEM_REF.
        (indirect_refs_may_alias_p): Likewise.
        * Makefile.in (tree-ssa-alias.o): Add $(TOPLEV_H).

        * gcc.c-torture/execute/pr44852.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr44852.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/Makefile.in
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-alias.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44852