From: "H.J. Lu" <hjl.tools@gmail.com>
To: Hongyu Wang <wwwhhhyyy333@gmail.com>
Cc: GCC Patches <gcc-patches@gcc.gnu.org>, liuhongt <hongtao.liu@intel.com>
Subject: Re: [PATCH] x86: Use x constraint on KL patterns
Date: Fri, 25 Mar 2022 18:22:00 -0700 [thread overview]
Message-ID: <CAMe9rOq=Fi1D6hp3LxL6hx+fjSD3vavoQrtovVfjcHOqBd3BcA@mail.gmail.com> (raw)
In-Reply-To: <CA+OydWmhz+rEXjRjDPVTko6_wr2rHwLHoy362ZmiTqJDJzVS7Q@mail.gmail.com>
On Fri, Mar 25, 2022 at 6:08 PM Hongyu Wang <wwwhhhyyy333@gmail.com> wrote:
>
> Is it possible to create a test case that gas would throw an error for
> invalid operands?
You can use -ffix-xmmN to disable XMM0-15.
> H.J. Lu via Gcc-patches <gcc-patches@gcc.gnu.org> 于2022年3月26日周六 04:50写道：
> >
> > 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.
> > ---
> > 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
> >
--
H.J.
next prev parent reply other threads:[~2022-03-26 1:22 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-25 20:50 H.J. Lu
2022-03-26 1:08 ` Hongyu Wang
2022-03-26 1:22 ` H.J. Lu [this message]
2022-03-26 2:04 ` Hongyu Wang
2022-03-26 2:08 ` H.J. Lu
2022-03-26 6:51 ` Hongtao Liu
2022-03-26 6:35 ` Hongtao Liu
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