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[Bug middle-end/43671] [4.4/4.5/4.6 Regression] -fsched2-use-superblocks -m32 produces wrong code with vectorization



------- Comment #11 from hjl at gcc dot gnu dot org  2010-05-04 15:51 -------
Subject: Bug 43671

Author: hjl
Date: Tue May  4 15:50:53 2010
New Revision: 159035

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=159035
Log:
Handle the same VALUE for true dependence.

gcc/

2010-05-04  H.J. Lu  <hongjiu.lu@intel.com>

        Backport from mainline
        2010-05-04  H.J. Lu  <hongjiu.lu@intel.com>

        PR middle-end/43671
        * alias.c (true_dependence): Handle the same VALUE in x and mem.
        (canon_true_dependence): Likewise.
        (write_dependence_p): Likewise.

gcc/testsuite/

2010-05-04  H.J. Lu  <hongjiu.lu@intel.com>

        Backport from mainline
        2010-05-04  H.J. Lu  <hongjiu.lu@intel.com>

        PR middle-end/43671
        * gcc.target/i386/pr43671.c: New.

Added:
    branches/gcc-4_4-branch/gcc/testsuite/gcc.target/i386/pr43671.c
Modified:
    branches/gcc-4_4-branch/gcc/ChangeLog
    branches/gcc-4_4-branch/gcc/alias.c
    branches/gcc-4_4-branch/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43671


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