[llvm-dev] RFC: Complex in LLVM

David Greene via llvm-dev llvm-dev at lists.llvm.org
Fri Jul 5 09:18:11 PDT 2019


Krzysztof Parzyszek via llvm-dev <llvm-dev at lists.llvm.org> writes:

>> Can you give some examples of non-FP types where a higher-level representation would be useful?
>
> Hexagon has instructions to do complex multiplication on pairs i16 x
> i16 (plus variants like accumulate, conjugate, etc.).

I guess I was asking more about how prevelent these operations are in
real codes.  I don't see them in HPC codes (at least, not the stuff I've
looked at) but other domains are probably very different.  And you're
right, fixed-point is probably going to become much more important.

                           -David


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