[PATCH] D90445: [SLP] Make SLPVectorizer to use `llvm.masked.gather` intrinsic

[Anton Afanasyev via Phabricator via llvm-commits]

anton-afanasyev added a comment.

I believe this issue is related to the default cost for `getGatherScatterOpCost()`. For the arch not having `gather/scatter` instrs we use `TargetTransformInfoImplBase::getGatherScatterOpCost()` which returns 1 unconditionally: https://github.com/llvm/llvm-project/blob/release/11.x/llvm/include/llvm/Analysis/TargetTransformInfoImpl.h#L480
I'd fix it by setting something like `1024` for the default cost.


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