[PATCH] D100476: [AArch64][SVEIntrinsicOpts] Replace last{a,b} intrinsic calls with extracts...

[Joe Ellis via Phabricator via llvm-commits]

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when the predicate used by last{a,b} specifies a known vector length.

For example:

  aarch64_sve_lasta(VL1, D) -> extractelement(D, #1)
  aarch64_sve_lastb(VL1, D) -> extractelement(D, #0)

Co-authored-by: Paul Walker <paul.walker at arm.com>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D100476

Files:
  llvm/lib/Target/AArch64/SVEIntrinsicOpts.cpp
  llvm/test/CodeGen/AArch64/sve-intrinsic-opts-lasta-lastb.ll

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