[PATCH] D141846: [AArch64] Allow poison elements of fixed-vectors to be duplicated as a widened element

[Matt Devereau via Phabricator via llvm-commits]

MattDevereau created this revision.
MattDevereau added reviewers: sdesmalen, peterwaller-arm, david-arm.
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Expanding upon https://reviews.llvm.org/D138203, allow null indices in
InsertElts to be matched with any value and be duplicated if the fixed
vector the scalar values are inserted into is poison, and the scalable vector
the sub-vector being inserted into is poison.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D141846

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

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