[PATCH] D147608: [RISCV] Lower scalar_to_vector

[Luke Lau via Phabricator via llvm-commits]

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Loads of fixed length vectors with irregular element counts are
sometimes emitted as a scalar load + scalar_to_vector.
Previously the scalar_to_vector wasn't legal and so was scalarized
further. This patch handles it by lowering it to a vmv.s.x.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D147608

Files:
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp
  llvm/test/CodeGen/RISCV/rvv/fixed-vectors-interleaved-access-zve32x.ll
  llvm/test/CodeGen/RISCV/rvv/fixed-vectors-load.ll
  llvm/test/CodeGen/RISCV/rvv/fixed-vectors-masked-scatter.ll

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