[PATCH] D133255: [RISCV] Transform VMERGE_VVM_<LMUL>_TU with all ones mask to VADD_VI_<LMUL>_TU.

[Yeting Kuo via Phabricator via llvm-commits]

fakepaper56 created this revision.
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The transformation is benefit because vmerge.vvm always needs mask operand but
vadd.vi may not.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D133255

Files:
  llvm/lib/Target/RISCV/RISCVISelDAGToDAG.cpp
  llvm/lib/Target/RISCV/RISCVISelDAGToDAG.h
  llvm/test/CodeGen/RISCV/rvv/rvv-vmerge-to-vadd.ll

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