Re: [Qemu-devel] [PATCH v2 00/10] tcg vector improvements

[Mark Cave-Ayland]

On 05/02/2019 21:29, Mark Cave-Ayland wrote:

> Now that this and the other pre-requisite patches have been merged into 
> master, I've
> rebased the outstanding PPC parts of your "tcg, target/ppc vector 
> improvements" on
> master including the above fix and pushed the result to
> https://github.com/mcayland/qemu/commits/ppc-altivec-v6.
> 
> The good news is that the graphics corruption I originally noticed caused by 
> the
> patch introducing the saturating add/sub vector ops has now gone, and with my
> little-endian vsplt fix included then both OS X and MacOS 9 appear to run 
> without any
> obvious issues on an x86 host, and certainly feel smoother compared to before.

I started to follow up Howard's report that he could still see graphical 
corruption
with these patches, and I was surprised to notice that it had reappeared 
locally once
again :/

After working out that this was because the relevant instructions weren't being
generated for all Mac machines, I was able to figure it out after a few hours of
digging. Patch to follow shortly.


ATB,

Mark.