On Tue, Oct 17, 2023 at 7:54 PM Roger Sayle wrote:
>
>
> Hi Uros,
> Thanks for the speedy review.
>
> > From: Uros Bizjak
> > Sent: 17 October 2023 17:38
> >
> > On Tue, Oct 17, 2023 at 3:08 PM Roger Sayle
> > wrote:
> > >
> > >
> > > This patch is the backend piece of a solution to PRs 101955 a
Hi Uros,
Thanks for the speedy review.
> From: Uros Bizjak
> Sent: 17 October 2023 17:38
>
> On Tue, Oct 17, 2023 at 3:08 PM Roger Sayle
> wrote:
> >
> >
> > This patch is the backend piece of a solution to PRs 101955 and
> > 106245, that adds a define_insn_and_split to the i386 backend, to
>
On Tue, Oct 17, 2023 at 3:08 PM Roger Sayle wrote:
>
>
> This patch is the backend piece of a solution to PRs 101955 and 106245,
> that adds a define_insn_and_split to the i386 backend, to perform sign
> extension of a single (least significant) bit using AND $1 then NEG.
>
> Previously, (x<<31)>>
This patch is the backend piece of a solution to PRs 101955 and 106245,
that adds a define_insn_and_split to the i386 backend, to perform sign
extension of a single (least significant) bit using AND $1 then NEG.
Previously, (x<<31)>>31 would be generated as
sall$31, %eax // 3 b
