[PATCH] D136771: [AArch64] Canonicalize SIGN_EXTEND to VSELECT

[Nicola Lancellotti via Phabricator via llvm-commits]

NicolaLancellotti created this revision.
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This is patch canonicalizes SIGN_EXTEND to VSELECT to allow sext to transform into a predicated instruction like add, sub or mul.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D136771

Files:
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
  llvm/lib/Target/AArch64/AArch64ISelLowering.h
  llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
  llvm/lib/Target/AArch64/SVEInstrFormats.td
  llvm/test/CodeGen/AArch64/predicated-add-sub-mul.ll

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