[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 #20 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Wed May 15 15:12:47 2019
New Revision: 271228

URL: https://gcc.gnu.org/viewcvs?rev=271228&root=gcc&view=rev
Log:
i386: Emulate MMX sse_cvtpi2ps with SSE

Emulate MMX sse_cvtpi2ps with SSE2 cvtdq2ps, preserving upper 64 bits of
destination XMM register.  Only SSE register source operand is allowed.

        PR target/89021
        * config/i386/sse.md (sse_cvtpi2ps): Changed to
        define_insn_and_split.  Also allow TARGET_MMX_WITH_SSE.  Add
        SSE emulation.

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