[Bug target/89021] Implement mmintrin.h in SSE

[hjl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89021

--- Comment #24 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Wed May 15 15:16:27 2019
New Revision: 271232

URL: https://gcc.gnu.org/viewcvs?rev=271232&root=gcc&view=rev
Log:
i386: Emulate MMX mmx_pmovmskb with SSE

Emulate MMX mmx_pmovmskb with SSE by zero-extending result of SSE pmovmskb
from QImode to SImode.  Only SSE register source operand is allowed.

        PR target/89021
        * config/i386/mmx.md (mmx_pmovmskb): Changed to
        define_insn_and_split to support SSE emulation.

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