[PATCH] D127853: [AArch64][SME] Add SME cntsb/h/w/d intrinsics

[David Sherwood via Phabricator via llvm-commits]

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These intrinsics return the number of elements in a streaming
vector, for example aarch64.sme.cntsw returns the number of
32-bit elements. When in streaming mode these are equivalent
to aarch64.sve.cntb/h/w/d with an input value of 1.

I have implemented these intrinsics using the rdsvl instruction
and added tests here:

  CodeGen/AArch64/SME/sme-intrinsics-rdsvl.ll


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D127853

Files:
  llvm/include/llvm/IR/IntrinsicsAArch64.td
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
  llvm/lib/Target/AArch64/AArch64ISelLowering.h
  llvm/lib/Target/AArch64/AArch64SMEInstrInfo.td
  llvm/test/CodeGen/AArch64/sme-intrinsics-rdsvl.ll

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