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

[Matt Devereau via Phabricator via llvm-commits]

MattDevereau updated this revision to Diff 487458.
MattDevereau added a comment.

Added a condition `if (!isa<PoisonValue>(CurrentInsertElt) || !isa<PoisonValue>(Default) ||` to check all lanes of the subvector being inserted are defined, and the first inserted element is inserted into poison


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D138203/new/

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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