[PATCH] D141693: [AArch64] turn extended vecreduce bigger than v16i8 into udot/sdot

[Zain Jaffal via Phabricator via llvm-commits]

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We can do this by breaking vecreduce into v16i8 vectors generating udot/sdot and concatenating them.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D141693

Files:
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
  llvm/test/CodeGen/AArch64/neon-dotreduce.ll

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