jhuber6 wrote:

> > > Nope, that was me mis-reading the Github interface. LGTM.
> > 
> > 
> > Nice, thanks for the quick review. I'm going to try making the generic bit 
> > functions (e.g. `__builtin_ctzg`) work with these vestors as well. A future 
> > patch I'll like to add a new queryable feature for boolean vectors so 
> > people can start depending on this expanded support. Right now we can only 
> > check `__has_feature(ext_vector_type)` which will return an error on 
> > booleans until clang 15 and isn't really useful until this patch. Likely 
> > we'll wand a builtin for masked loads / stores as well.
> 
> Another thing to look at is handling these operations in ExprConstant.cpp so 
> that we handle them in constexpr too!

I did an informal test earlier to see that it works within constexpr. I can 
probably add that to the existing test.

https://github.com/llvm/llvm-project/pull/154145
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