[PATCH] D91255: [AArch64] Rearrange (dup(sext/zext)) to (sext/zext(dup))

[Nicholas Guy via Phabricator via llvm-commits]

NickGuy created this revision.
NickGuy added reviewers: SjoerdMeijer, dmgreen, fhahn, efriedma.
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Performing this rearrangement allows for existing patterns
to match against cases where operands are hoisted up to a loop
header (by LICM), allowing for optimisations such as umull/smull
codegen, while still allowing loop-invariant values to be hoisted
out of the loop afer other optimisations.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D91255

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

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