[PATCH] D104630: [AArch64][CostModel] Add cost model for experimental.vector.splice

[Caroline via Phabricator via llvm-commits]

CarolineConcatto added a comment.

@sdesmalen The cost now takes into account the index and it is different when the scalar type is i1.
For negative index there is predicate mask and a compare and select instruction to choose the correct elements. 
That is the reason it uses getCmpSelInstrCost.
For predicated there is a  table that has the cost for promoting and truncating together.


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https://reviews.llvm.org/D104630