[Bug target/67849] AVX512 Hitting upper-bank register on extract insn split

[kyukhin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67849

--- Comment #1 from Kirill Yukhin <kyukhin at gcc dot gnu.org> ---
Author: kyukhin
Date: Tue Oct  6 13:49:30 2015
New Revision: 228525

URL: https://gcc.gnu.org/viewcvs?rev=228525&root=gcc&view=rev
Log:
AVX-512. Avoid upper-bank registers when splitting vec_extract_lo instruction.

gcc/
        PR target/67849
        * config/i386/sse.md (define_split vec_select/V8FI): Restrict
        split for upper-bank registers when target does not support
        AVX512VL.
        (define_insn "vec_extract_lo_<mode><mask_name>"): Restrict
        split when target does not support AVX512VL.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/sse.md