[PATCH] D138203: [AArch64][InstCombine] Simplify repeated complex patterns in dupqlane

[Matt Devereau via Phabricator via llvm-commits]

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[AArch64][InstCombine] Simplify repeated complex patterns in dupqlane

      

Repeated floating-point complex patterns in dupqlane such as (f32 a, f32 b, f32 a, f32 b) can be simplified to shufflevector(f64(a, b), undef, 0)


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D138203

Files:
  llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
  llvm/test/CodeGen/AArch64/sve-intrinsics-perm-select.ll
  llvm/test/Transforms/InstCombine/AArch64/sve-intrinsic-dupqlane.ll

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