[llvm-dev] [PATCH] Add optional _Float16 support

[Craig Topper via llvm-dev]

On Thu, Jul 1, 2021 at 4:02 PM H.J. Lu via llvm-dev <llvm-dev at lists.llvm.org>
wrote:

> On Thu, Jul 1, 2021 at 3:40 PM Joseph Myers <joseph at 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.
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