[PATCH] D146711: [RISCV] Lower shuffles as vmerge + vslide{up,down} where possible

[Luke Lau via Phabricator via llvm-commits]

luke updated this revision to Diff 508055.
luke added a comment.

Rework to only handle inserts of subvectors, and lower them into single vslideups


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D146711/new/

https://reviews.llvm.org/D146711

Files:
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp
  llvm/test/CodeGen/RISCV/rvv/fixed-vectors-fp-buildvec.ll
  llvm/test/CodeGen/RISCV/rvv/fixed-vectors-int-shuffles.ll
  llvm/test/CodeGen/RISCV/rvv/fixed-vectors-shufflevector-vnsrl.ll
  llvm/test/CodeGen/RISCV/rvv/vector-deinterleave-fixed.ll

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