Could you re-title this patch into something like "Support const
vector expansion with xxx pattern",
On Mon, Jun 26, 2023 at 3:52 PM Robin Dapp via Gcc-patches
<gcc-patches@gcc.gnu.org> wrote:
>
> Hi Juzhe,
>
> > Currently, we are able to generate step vector with base == 0:
> > { 0, 0, 2, 2, 4, 4, ... }
> >
> > ASM:
> >
> > vid
> > vand
> >
> > However, we do wrong for step vector with base != 0:
> > { 1, 1, 3, 3, 5, 5, ... }
> >
> > Before this patch, such case will run fail.
> >
> > After this patch, we are able to pass the testcase and generate the step
> > vector with asm:
> >
> > vid
> > vand
> > vadd
>
> Can't we use the first case as long as pow2_p (base) == true
> and not just for base == 0?
>
> Regards
> Robin
>
