[PATCH] D115653: [DAG]Introduce llvm::processShuffleMasks and use it for shuffles in DAG Type Legalizer.

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri added a comment.

Some topics that may need to be considered for cost modelling purposes:
What about X86 AVX512 2-input shuffles?
What about the available ISA set? (=vector size, shuffle granularity (element size))
What about other legalization problems? (AVX2 `pshub` can't pick from another XMM half of YMM input.)


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D115653/new/

https://reviews.llvm.org/D115653