[RFC PATCH 16/19] riscv: Add accelerated strcmp routines

[Jeff Law]

On 2/7/23 07:15, Christoph Müllner wrote:
> 
> On Tue, Feb 7, 2023 at 12:57 PM Xi Ruoyao <xry111@xry111.site> wrote:
> 
>     Is it possible to make the optimized generic string routine [1] ifunc-
>     aware in some way?  Or can we "templatize" it so we can make vectorized
>     string routines more easily?
> 
> 
> You mean to compile the generic code multiple times with different sets
> of enabled extensions? Yes, that should work (my patchset does the same
> for memset). Let's wait for the referenced patchset to land (looks like this
> will happen soon).
We would still need that kernel interface to be sorted out to use 
function multi-versioning.  Under the hood what GCC generates for FMV 
looks a lot like an ifunc resolver.

jeff