ping
On Fri, Apr 30, 2021 at 12:49 PM Hongtao Liu <crazy...@gmail.com> wrote:
>
> Hi:
> For v{,p}expand* When mask is 0, -1, or has all all one bits in its
> lower part, it can be optimized to simple mov or mask mov.
> Bootstrapped and regtested on x86_64-linux-gnu{-m32,} and
> x86_64-linux-gnu{m32\ -march=cascadelake,-m64\ -march=cascadelake},
>
> gcc/ChangeLog:
>
> * config/i386/i386-builtin.def (BDESC): Adjust builtin name.
> * config/i386/sse.md (<avx512>_expand<mode>_mask): Rename to ..
> (expand<mode>_mask): this ..
> (*expand<mode>_mask): New pre_reload splitter to transform
> * v{,p}expand* to vmov* when mask is zero, all ones, or has
> all ones in its lower part, otherwise still generate v{,p}expand*.
>
> gcc/testsuite/ChangeLog:
>
> * gcc.target/i386/avx512bw-pr100267-1.c: New test.
> * gcc.target/i386/avx512bw-pr100267-b-2.c: New test.
> * gcc.target/i386/avx512bw-pr100267-d-2.c: New test.
> * gcc.target/i386/avx512bw-pr100267-q-2.c: New test.
> * gcc.target/i386/avx512bw-pr100267-w-2.c: New test.
> * gcc.target/i386/avx512f-pr100267-1.c: New test.
> * gcc.target/i386/avx512f-pr100267-pd-2.c: New test.
> * gcc.target/i386/avx512f-pr100267-ps-2.c: New test.
> * gcc.target/i386/avx512vl-pr100267-1.c: New test.
> * gcc.target/i386/avx512vl-pr100267-pd-2.c: New test.
> * gcc.target/i386/avx512vl-pr100267-ps-2.c: New test.
> * gcc.target/i386/avx512vlbw-pr100267-1.c: New test.
> * gcc.target/i386/avx512vlbw-pr100267-b-2.c: New test.
> * gcc.target/i386/avx512vlbw-pr100267-d-2.c: New test.
> * gcc.target/i386/avx512vlbw-pr100267-q-2.c: New test.
> * gcc.target/i386/avx512vlbw-pr100267-w-2.c: New test.
--
BR,
Hongtao
