On Wed, Sep 6, 2023 at 1:39 PM Adhemerval Zanella Netto <
adhemerval.zanella@linaro.org> wrote:

>
>
> On 06/09/23 07:34, Christoph Müllner wrote:
> >
> >
> > On Thu, Aug 24, 2023 at 7:21 PM Adhemerval Zanella Netto <
> adhemerval.zanella@linaro.org <mailto:adhemerval.zanella@linaro.org>>
> wrote:
> >
> >
> >
> >     On 23/08/23 02:46, Christoph Muellner wrote:
> >     > From: Christoph Müllner <christoph.muellner@vrull.eu <mailto:
> christoph.muellner@vrull.eu>>
> >     >
> >     > XTheadBb has similar instructions like Zbb, which allow optimized
> >     > string processing:
> >     > * th.ff0: find-first zero is a CLZ instruction.
> >     > * th.tstnbz: Similar like orc.b, but with a bit-inverted result.
> >     >
> >     > The instructions are documented here:
> >     >
> https://github.com/T-head-Semi/thead-extension-spec/tree/master/xtheadbb <
> https://github.com/T-head-Semi/thead-extension-spec/tree/master/xtheadbb>
> >     >
> >     > These instructions can be found in the T-Head C906 and the C910.
> >     >
> >     > Tested with the string tests.
> >     >
> >     > Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu
> <mailto:christoph.muellner@vrull.eu>>
> >
> >
> >     LGTM, thanks.  Is th.tstnbz available as builtin by chance?
> >
> >     Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org
> <mailto:adhemerval.zanella@linaro.org>>
> >
> >
>
> Someone to actually push it, since it is already reviewed. I will install
> it.
>

Thanks!