[all-commits] [llvm/llvm-project] f00624: [CodeGen] Add generic INIT_UNDEF pseudo (#106744)

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f006246299c96486a8e37005a94e07c0bf334ee0
      https://github.com/llvm/llvm-project/commit/f006246299c96486a8e37005a94e07c0bf334ee0
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2024-09-05 (Thu, 05 Sep 2024)

  Changed paths:
    M llvm/include/llvm/CodeGen/TargetInstrInfo.h
    M llvm/include/llvm/Support/TargetOpcodes.def
    M llvm/include/llvm/Target/Target.td
    M llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
    M llvm/lib/CodeGen/InitUndef.cpp
    M llvm/lib/Target/ARM/ARMAsmPrinter.cpp
    M llvm/lib/Target/ARM/ARMBaseInstrInfo.h
    M llvm/lib/Target/ARM/ARMInstrInfo.td
    M llvm/lib/Target/RISCV/RISCVAsmPrinter.cpp
    M llvm/lib/Target/RISCV/RISCVInstrInfo.h
    M llvm/lib/Target/RISCV/RISCVInstrInfoVPseudos.td
    M llvm/test/CodeGen/RISCV/rvv/handle-noreg-with-implicit-def.mir
    M llvm/test/CodeGen/RISCV/rvv/subregister-undef-early-clobber.mir
    M llvm/test/CodeGen/RISCV/rvv/undef-earlyclobber-chain.mir
    M llvm/test/CodeGen/Thumb2/mve-laneinterleaving-cost.ll
    M llvm/test/CodeGen/Thumb2/mve-satmul-loops.ll
    M llvm/test/TableGen/GlobalISelCombinerEmitter/match-table-imms.td

  Log Message:
  -----------
  [CodeGen] Add generic INIT_UNDEF pseudo (#106744)

The InitUndef pass currently uses target-specific pseudo instructions,
with one pseudo per register class.

Instead, add a generic pseudo instruction, which can be used by all
targets and register classes.



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