[PATCH] D105413: [ARM] Add lowering of uadd_sat to uq{add|sub}8 and uq{add|sub}16

[Dave Green via Phabricator via llvm-commits]

dmgreen added a comment.

We usually don't treat the dsp instructions as llvm vector operations directly. They don't cover a full enough set of operations to make them worthwhile, and nothing will generate them from llvm/clang.

For the cases we do recognize, it's from scalar code either through ISel or the ARMParallelDSPPass.

If you have control of the code, the best bet may be to just use the @llvm.arm.qadd8 intrinsics directly.


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  https://reviews.llvm.org/D105413/new/

https://reviews.llvm.org/D105413