[PATCH] D112994: [AArch64] Sink splat shuffles to lane index intrinsics

[Dave Green via Phabricator via llvm-commits]

dmgreen created this revision.
dmgreen added reviewers: NickGuy, SjoerdMeijer, fhahn, samtebbs.
Herald added subscribers: arphaman, hiraditya, kristof.beyls.
dmgreen requested review of this revision.
Herald added a project: LLVM.

This teaches AArch64TargetLowering::shouldSinkOperands to sink splat shuffles to certain neon intrinsics, so that they can make use of the lane variants of the instructions that are available.


https://reviews.llvm.org/D112994

Files:
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
  llvm/test/CodeGen/AArch64/sinksplat.ll
  llvm/test/Transforms/CodeGenPrepare/AArch64/sink-free-instructions.ll

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