[PATCH] D133355: [AArch64] Sink splat(s/zext(..)) to uses

[Dave Green via Phabricator via llvm-commits]

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If the Shuffle is a splat and the operand is a zext/sext, sinking the operand and the s/zext can help create indexed s/umull. This is especially useful to prevent i64 mul being scalarized.


https://reviews.llvm.org/D133355

Files:
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
  llvm/test/CodeGen/AArch64/aarch64-matrix-umull-smull.ll

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