[PATCH] D116277: [RISCV] Use vmv.x.s to build one element splat vector.

[Jianjian Guan via Phabricator via llvm-commits]

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When we want to create an splat vector that only the first element is initialized, we could use vmv.x.s to build it.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D116277

Files:
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp
  llvm/test/CodeGen/RISCV/rvv/fixed-vectors-reduction-int-vp.ll
  llvm/test/CodeGen/RISCV/rvv/fixed-vectors-reduction-int.ll
  llvm/test/CodeGen/RISCV/rvv/vreductions-int-rv32.ll
  llvm/test/CodeGen/RISCV/rvv/vreductions-int-rv64.ll
  llvm/test/CodeGen/RISCV/rvv/vreductions-int-vp.ll

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