[Bug target/69459] [5 Regression] wrong code with -O2 and vector arithmetics @ x86_64

[uros at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69459

--- Comment #15 from uros at gcc dot gnu.org ---
Author: uros
Date: Fri Jan 29 18:25:13 2016
New Revision: 232992

URL: https://gcc.gnu.org/viewcvs?rev=232992&root=gcc&view=rev
Log:
        PR target/69459
        * config/i386/constraints.md (C): Only accept constant zero operand.
        (BC): New constraint.
        * config/i386/sse.md (*mov<mode>_internal): Use BC constraint
        instead of C constraint.
        * doc/md.texi (Machine Constraints): Update description
        of C constraint.

testsuite/ChangeLog:

        PR target/69459
        * gcc.target/i386/pr69459.c: New test.


Added:
    branches/gcc-4_9-branch/gcc/testsuite/gcc.target/i386/pr69459.c
Modified:
    branches/gcc-4_9-branch/gcc/ChangeLog
    branches/gcc-4_9-branch/gcc/config/i386/constraints.md
    branches/gcc-4_9-branch/gcc/config/i386/sse.md
    branches/gcc-4_9-branch/gcc/doc/md.texi
    branches/gcc-4_9-branch/gcc/testsuite/ChangeLog