[PATCH] D130692: [AArch64][SVE] Narrow 64bit gather index to 32bit

Matt Devereau via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Thu Jul 28 02:28:21 PDT 2022


MattDevereau created this revision.
MattDevereau added reviewers: peterwaller-arm, c-rhodes, DavidTruby, dtemirbulatov, paulwalker-arm.
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Narrowing gather instruction's 64bit index to 32bit allows them to use the .s precision instruction variant. This results in more throughput per instruction.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D130692

Files:
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
  llvm/test/CodeGen/AArch64/sve-gather-scatter-dag-combine.ll

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