[Bug target/100637] [i386] Vectorize 4-byte vectors

[ubizjak at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100637

--- Comment #11 from Uroš Bizjak <ubizjak at gmail dot com> ---
The master branch has been updated by Uros Bizjak <u...@gcc.gnu.org>:

https://gcc.gnu.org/g:be8749f939a933bca6de19d9cf1a510d5954c2fa

commit r12-2036-gbe8749f939a933bca6de19d9cf1a510d5954c2fa
Author: Uros Bizjak <ubiz...@gmail.com>
Date:   Mon Jul 5 21:05:10 2021 +0200

    i386: Implement 4-byte vector (V4QI/V2HI) constant permutations

    2021-07-05  Uroš Bizjak  <ubiz...@gmail.com>

    gcc/
            * config/i386/i386-expand.c (ix86_split_mmx_punpck):
            Handle V4QI and V2HI modes.
            (expand_vec_perm_blend): Allow 4-byte vector modes with
TARGET_SSE4_1.
            Handle V4QI mode. Emit mmx_pblendvb32 for 4-byte modes.
            (expand_vec_perm_pshufb): Rewrite to use switch statemets.
            Handle 4-byte dual operands with TARGET_XOP and single operands
            with TARGET_SSSE3.  Emit mmx_ppermv32 for TARGET_XOP and
            mmx_pshufbv4qi3 for TARGET_SSSE3.
            (expand_vec_perm_pblendv): Allow 4-byte vector modes with
TARGET_SSE4_1.
            (expand_vec_perm_interleave2): Allow 4-byte vector modes.
            (expand_vec_perm_pshufb2): Allow 4-byte vector modes with
TARGET_SSSE3.
            (expand_vec_perm_even_odd_1): Handle V4QI mode.
            (expand_vec_perm_broadcast_1): Handle V4QI mode.
            (ix86_vectorize_vec_perm_const): Handle V4QI mode.
            * config/i386/mmx.md (mmx_ppermv32): New insn pattern.
            (mmx_pshufbv4qi3): Ditto.
            (*mmx_pblendw32): Ditto.
            (*mmx_pblendw64): Rename from *mmx_pblendw.
            (mmx_punpckhbw_low): New insn_and_split pattern.
            (mmx_punpcklbw_low): Ditto.