[Bug target/84786] [miscompilation] vunpcklpd accessing xmm16-22 targeting KNL

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84786

--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Jun 22 20:36:31 2018
New Revision: 261919

URL: https://gcc.gnu.org/viewcvs?rev=261919&root=gcc&view=rev
Log:
        Backported from mainline
        2018-03-13  Jakub Jelinek  <jakub@redhat.com>

        PR target/84786
        * config/i386/sse.md (sse2_loadhpd): Use Yv constraint rather than v
        on the last operand.

        * gcc.target/i386/avx512f-pr84786-1.c: New test.
        * gcc.target/i386/avx512f-pr84786-2.c: New test.

Added:
    branches/gcc-7-branch/gcc/testsuite/gcc.target/i386/avx512f-pr84786-1.c
    branches/gcc-7-branch/gcc/testsuite/gcc.target/i386/avx512f-pr84786-2.c
Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/config/i386/sse.md
    branches/gcc-7-branch/gcc/testsuite/ChangeLog