On Tue, Apr 29, 2025 at 10:08 AM Hongtao Liu wrote:
>
> On Mon, Apr 28, 2025 at 5:07 PM H.J. Lu wrote:
> >
> > On Mon, Apr 28, 2025 at 4:26 PM H.J. Lu wrote:
> > >
> >
> > > > > This is what my patch does:
> > > > But it iterates through vector_insns, using a def-ref chain to find
> > > > those
On Mon, Apr 28, 2025 at 5:07 PM H.J. Lu wrote:
>
> On Mon, Apr 28, 2025 at 4:26 PM H.J. Lu wrote:
> >
>
> > > > This is what my patch does:
> > > But it iterates through vector_insns, using a def-ref chain to find
> > > those insns. I think we can just record those single_set with src as
> > > co
an SSE register, then tie with
> any other mode acceptable to SSE registers, excluding
> (subreg:QI (reg:TI 99) 0))
> (subreg:HI (reg:TI 99) 0))
> (subreg:SI (reg:TI 99) 0))
> (subreg:DI (reg:TI 99) 0))
> to avoid unnecessary move from SSE
