[all-commits] [llvm/llvm-project] b1542a: [RISCV] Rename merge operand -> passthru. NFC (#10...

[Luke Lau via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b1542afd0b3d393aea3a0ccab41b850f59e4033c
      https://github.com/llvm/llvm-project/commit/b1542afd0b3d393aea3a0ccab41b850f59e4033c
  Author: Luke Lau <luke at igalia.com>
  Date:   2024-07-30 (Tue, 30 Jul 2024)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVAsmPrinter.cpp
    M llvm/lib/Target/RISCV/RISCVISelDAGToDAG.cpp
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp
    M llvm/lib/Target/RISCV/RISCVISelLowering.h
    M llvm/lib/Target/RISCV/RISCVInsertVSETVLI.cpp
    M llvm/lib/Target/RISCV/RISCVInstrInfoV.td
    M llvm/lib/Target/RISCV/RISCVInstrInfoVPseudos.td
    M llvm/lib/Target/RISCV/RISCVInstrInfoVVLPatterns.td
    M llvm/lib/Target/RISCV/RISCVInstrInfoZvk.td
    M llvm/lib/Target/RISCV/RISCVSchedSiFive7.td
    M llvm/lib/Target/RISCV/RISCVSchedSiFiveP600.td
    M llvm/lib/Target/RISCV/RISCVScheduleV.td
    M llvm/lib/Target/RISCV/RISCVVectorPeephole.cpp
    M llvm/test/CodeGen/RISCV/rvv/vleff-vlseg2ff-output.ll

  Log Message:
  -----------
  [RISCV] Rename merge operand -> passthru. NFC (#100330)

We sometimes call the first tied dest operand in vector pseudos the
merge operand, and other times the passthru.

Passthru seems to be more common, and it's what the C intrinsics call
it[^1], so this renames all usages of merge to passthru to be
consistent. It also helps prevent confusion with vmerge.vvm in some of
the peephole optimisations.

[^1]:
https://github.com/riscv-non-isa/rvv-intrinsic-doc/blob/main/doc/rvv-intrinsic-spec.adoc#the-passthrough-vd-argument-in-the-intrinsics



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