[all-commits] [llvm/llvm-project] 07ae19: [RISCV] Move performCombineVMergeAndVOps to RISCVV...

[Luke Lau via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 07ae19c132e1b0adbdb3cc036b9f50624e2ed1b7
      https://github.com/llvm/llvm-project/commit/07ae19c132e1b0adbdb3cc036b9f50624e2ed1b7
  Author: Luke Lau <luke at igalia.com>
  Date:   2025-07-04 (Fri, 04 Jul 2025)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVISelDAGToDAG.cpp
    M llvm/lib/Target/RISCV/RISCVISelDAGToDAG.h
    M llvm/lib/Target/RISCV/RISCVVectorPeephole.cpp
    M llvm/test/CodeGen/RISCV/rvv/combine-reduce-add-to-vcpop.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-fp-buildvec.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-int-buildvec.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-mask-buildvec.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-masked-gather.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-shuffle-deinterleave2.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-shuffle-int-interleave.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-shuffle-int.ll
    R llvm/test/CodeGen/RISCV/rvv/rvv-peephole-vmerge-vops-mir.ll
    M llvm/test/CodeGen/RISCV/rvv/vector-deinterleave-fixed.ll
    A llvm/test/CodeGen/RISCV/rvv/vmerge-peephole.mir
    M llvm/test/CodeGen/RISCV/rvv/vwadd-sdnode.ll

  Log Message:
  -----------
  [RISCV] Move performCombineVMergeAndVOps to RISCVVectorPeephole (#144076)

This moves the peephole that folds vmerges into its operands into
RISCVVectorPeephole. This will also allow us to eventually commute
instructions to allow folding, see #141885 and #70042

Most of the test diffs are due to the slight change in instruction
ordering.

For now doPeepholeMaskedRVV is kept even though its a duplicate of
RISCVVectorPeephole::convertToUnmasked to minimize the diff, I plan on
removing it in a separate patch as it causes some instructions to be
shuffled around.

Similarly, this runs foldVMergeToMask before the other peepholes to
minimize the diff for now.

rvv-peephole-vmerge-vops-mir.ll was replaced with a dedicated
vmerge-peephole.mir test.



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