[Bug rtl-optimization/49390] [4.6/4.7 Regression] GCSE miscompilation

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49390

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-06-14 
15:01:15 UTC ---
Author: jakub
Date: Tue Jun 14 15:01:10 2011
New Revision: 175024

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=175024
Log:
    PR rtl-optimization/49390
    Revert:
    2010-06-29  Bernd Schmidt  <ber...@codesourcery.com>

    * cse.c (exp_equiv_p): For MEMs, if for_gcse, only compare
    MEM_ALIAS_SET.

    * gcc.c-torture/execute/pr49390.c: New test.

Added:
    branches/gcc-4_6-branch/gcc/testsuite/gcc.c-torture/execute/pr49390.c
Modified:
    branches/gcc-4_6-branch/gcc/ChangeLog
    branches/gcc-4_6-branch/gcc/cse.c
    branches/gcc-4_6-branch/gcc/testsuite/ChangeLog