[PATCH] D155150: [RISCV] Lower VP_CTLZ_ZERO_UNDEF/VP_CTTZ_ZERO_UNDEF/VP_CTLZ by converting to FP and extracting the exponent.

[Liao Chunyu via Phabricator via llvm-commits]

liaolucy created this revision.
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D111904 <https://reviews.llvm.org/D111904>, D141585 <https://reviews.llvm.org/D141585> made RISC-V customized lower vector ISD::CTLZ_ZERO_UNDEF/CTTZ_ZERO_UNDEF/CTLZ
by converting to float and using the float result.

Perhaps VP_CTLZ_ZERO_UNDEF/VP_CTTZ_ZERO_UNDEF/VP_CTLZ could use the similar feature.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D155150

Files:
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp
  llvm/test/CodeGen/RISCV/rvv/ctlz-vp.ll
  llvm/test/CodeGen/RISCV/rvv/cttz-vp.ll

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