[llvm-dev] [RFC] Vector Predication

Luke Kenneth Casson Leighton via llvm-dev llvm-dev at lists.llvm.org
Fri Feb 8 16:59:51 PST 2019

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On Fri, Feb 8, 2019 at 3:42 PM David Greene <dag at cray.com> wrote:
> Jacob Lifshay <programmerjake at gmail.com> writes:
> > While we're adding this, it may be a good idea to go all in and just
> > lift the restriction on vectors containing other non-scalable vectors,
> > so you could do something like: <scalable 1 x <4 x <4 x float>>> to be
> > a scalable vector of 4x4 matrices.
> This is enticing to me but it does give me pause about how SIMD targets
> will deal with these types.

indeed.  normally, matrices operations would be handled at the
programmatic level (result: a whole diverse and disparate and often
custom strategies). finding the common ground will take time.


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