[PATCH] D139747: [RISCV] Allow fractional LMUL for reduction start value

[Philip Reames via Phabricator via llvm-commits]

reames created this revision.
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For reductions, we need to put the start value into a source vector.  For fractional LMULs, we can perform the operation at the original LMUL.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D139747

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

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