MaskRay added a comment.

I think this is correct, but does their performance matter? 
llvm/IR/RuntimeLibcalls.def do not define them (they cannot be produced by 
llvm). Targets either emit popcount & 1 or detect the idiom and emit an 
optimized parity (x86 after PR46954)


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D87218/new/

https://reviews.llvm.org/D87218

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