[PATCH] D138025: [RISCV] Make lowerVECTOR_SHUFFLEAsVSlidedown follow source until not EXTRACT_SUBVECTOR.

[Han-Kuan Chen via Phabricator via llvm-commits]

HanKuanChen created this revision.
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Current lowerVECTOR_SHUFFLEAsVSlidedown only seeks whether input are
EXTRACT_SUBVECTOR and their source are same. The commit will make the
function seek input and their source until they are not
EXTRACT_SUBVECTOR.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D138025

Files:
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp
  llvm/test/CodeGen/RISCV/rvv/fixed-vectors-int-shuffles.ll

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