[PATCH] D149724: [RISCV] Promote i1 shuffles to i8 shuffles.

[Craig Topper via Phabricator via llvm-commits]

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Otherwise I think we extract and use a build_vector. There may be
some more improvements that can be made and there might be some
cases that we should do something different for, but this seemed like a
decent starting point.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D149724

Files:
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp
  llvm/test/CodeGen/RISCV/rvv/constant-folding-crash.ll
  llvm/test/CodeGen/RISCV/rvv/fixed-vector-shuffle-reverse.ll
  llvm/test/CodeGen/RISCV/rvv/vector-deinterleave-fixed.ll
  llvm/test/CodeGen/RISCV/rvv/vector-interleave-fixed.ll

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