[Bug tree-optimization/56899] [4.6/4.7 Regression] Wrong constant folding

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56899

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[4.6/4.7/4.8/4.9            |[4.6/4.7 Regression] Wrong
                   |Regression] Wrong constant  |constant folding
                   |folding                     |

--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-04-11 07:45:59 UTC ---
Author: jakub
Date: Thu Apr 11 07:30:20 2013
New Revision: 197692

URL: http://gcc.gnu.org/viewcvs?rev=197692&root=gcc&view=rev
Log:
    PR tree-optimization/56899
    * fold-const.c (extract_muldiv_1): Apply distributive law
    only if TYPE_OVERFLOW_WRAPS (ctype).

    * gcc.c-torture/execute/pr56899.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr56899.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog

Author: jakub
Date: Thu Apr 11 07:37:17 2013
New Revision: 197693

URL: http://gcc.gnu.org/viewcvs?rev=197693&root=gcc&view=rev
Log:
    PR tree-optimization/56899
    * fold-const.c (extract_muldiv_1): Apply distributive law
    only if TYPE_OVERFLOW_WRAPS (ctype).

    * gcc.c-torture/execute/pr56899.c: New test.

Added:
    branches/gcc-4_8-branch/gcc/testsuite/gcc.c-torture/execute/pr56899.c
Modified:
    branches/gcc-4_8-branch/gcc/ChangeLog
    branches/gcc-4_8-branch/gcc/fold-const.c
    branches/gcc-4_8-branch/gcc/testsuite/ChangeLog