On Sat, Mar 26, 2022 at 4:50 AM H.J. Lu via Gcc-patches
<gcc-patches@gcc.gnu.org> wrote:
>
> Since KL instructions have no AVX512 version, replace the "v" register
> constraint with the "x" register constraint.
>
>         PR target/105058
>         * config/i386/sse.md (loadiwkey): Replace "v" with "x".
>         (aes<aesklvariant>u8): Likewise.
LGTM, please backport to GCC11.
> ---
>  gcc/config/i386/sse.md | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
> index 29802d00ce6..33bd2c4768a 100644
> --- a/gcc/config/i386/sse.md
> +++ b/gcc/config/i386/sse.md
> @@ -28364,8 +28364,8 @@ (define_insn "avx512f_dpbf16ps_<mode>_mask"
>
>  ;; KEYLOCKER
>  (define_insn "loadiwkey"
> -  [(unspec_volatile:V2DI [(match_operand:V2DI 0 "register_operand" "v")
> -                         (match_operand:V2DI 1 "register_operand" "v")
> +  [(unspec_volatile:V2DI [(match_operand:V2DI 0 "register_operand" "x")
> +                         (match_operand:V2DI 1 "register_operand" "x")
>                           (match_operand:V2DI 2 "register_operand" "Yz")
>                           (match_operand:SI   3 "register_operand" "a")]
>                          UNSPECV_LOADIWKEY)
> @@ -28498,7 +28498,7 @@ (define_int_attr aesklvariant
>     (UNSPECV_AESENC256KLU8 "enc256kl")])
>
>  (define_insn "aes<aesklvariant>u8"
> -  [(set (match_operand:V2DI 0 "register_operand" "=v")
> +  [(set (match_operand:V2DI 0 "register_operand" "=x")
>         (unspec_volatile:V2DI [(match_operand:V2DI 1 "register_operand" "0")
>                                (match_operand:BLK   2 "memory_operand" "m")]
>                               AESDECENCKL))
> --
> 2.35.1
>


-- 
BR,
Hongtao

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