From: Craig Topper via Libc-alpha <libc-alpha@sourceware.org>
To: "H.J. Lu" <hjl.tools@gmail.com>
Cc: llvm-dev <llvm-dev@lists.llvm.org>,
GNU C Library <libc-alpha@sourceware.org>,
GCC Patches <gcc-patches@gcc.gnu.org>,
IA32 System V Application Binary Interface
<ia32-abi@googlegroups.com>,
Joseph Myers <joseph@codesourcery.com>
Subject: Re: [llvm-dev] [PATCH] Add optional _Float16 support
Date: Thu, 1 Jul 2021 16:05:10 -0700 [thread overview]
Message-ID: <CAF7ks-MHftsQDrHJjGtcDZNdWgvJB_RncrmtD+96UFd6AJihuw@mail.gmail.com> (raw)
In-Reply-To: <CAMe9rOrpT5YTi79fBndwMzYHQWbshfzUK3JSMY2EeKrLN-MxYQ@mail.gmail.com>
On Thu, Jul 1, 2021 at 4:02 PM H.J. Lu via llvm-dev <llvm-dev@lists.llvm.org>
wrote:
> On Thu, Jul 1, 2021 at 3:40 PM Joseph Myers <joseph@codesourcery.com>
> wrote:
> >
> > On Thu, 1 Jul 2021, H.J. Lu wrote:
> >
> > > BTW, _Float16 software emulation may require more than just SSE
> > > since we need to do _Float16 load and store with XMM registers.
> > > There is no 16bit load/store for XMM registers without AVX512FP16.
> >
> > You should be able to make the move go via general-purpose registers (for
> > example) if you can't do a direct 16-bit load/store for XMM registers.
> >
>
> There is no 16bit move between GPRs and XMM registers without
> AVX512FP16.
>
>
Isn't PINSRW supported since SSE1?
>
> --
> H.J.
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev@lists.llvm.org
> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
next prev parent reply other threads:[~2021-07-01 23:06 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-01 21:05 [PATCH] Add optional _Float16 support H.J. Lu via Libc-alpha
2021-07-01 22:10 ` Joseph Myers
2021-07-01 22:27 ` H.J. Lu via Libc-alpha
2021-07-01 22:40 ` Joseph Myers
2021-07-01 23:01 ` H.J. Lu via Libc-alpha
2021-07-01 23:05 ` Craig Topper via Libc-alpha [this message]
2021-07-01 23:33 ` [llvm-dev] " Jacob Lifshay via Libc-alpha
2021-07-02 7:45 ` Richard Biener via Libc-alpha
2021-07-02 8:03 ` Hongtao Liu via Libc-alpha
2021-07-02 9:21 ` Jakub Jelinek via Libc-alpha
2021-07-13 3:59 ` Wang, Pengfei via Libc-alpha
2021-07-13 14:26 ` H.J. Lu via Libc-alpha
2021-07-13 14:48 ` Wang, Pengfei via Libc-alpha
2021-07-13 15:04 ` H.J. Lu via Libc-alpha
2021-07-13 15:41 ` Joseph Myers
2021-07-13 16:24 ` H.J. Lu via Libc-alpha
2021-07-29 13:39 ` H.J. Lu via Libc-alpha
2021-08-24 5:55 ` John McCall via Libc-alpha
2021-08-25 12:35 ` H.J. Lu via Libc-alpha
2021-08-25 20:32 ` John McCall via Libc-alpha
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