[all-commits] [llvm/llvm-project] 539381: [DebugInfo] Update MachineInstr to help support va...

[Stephen Tozer via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 539381da26096df54ccf862088c8242498a7dcae
      https://github.com/llvm/llvm-project/commit/539381da26096df54ccf862088c8242498a7dcae
  Author: stozer <stephen.tozer at sony.com>
  Date:   2020-06-22 (Mon, 22 Jun 2020)

  Changed paths:
    M llvm/include/llvm/CodeGen/AntiDepBreaker.h
    M llvm/include/llvm/CodeGen/MachineInstr.h
    M llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
    M llvm/lib/CodeGen/AsmPrinter/DbgEntityHistoryCalculator.cpp
    M llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp
    M llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
    M llvm/lib/CodeGen/LiveDebugValues.cpp
    M llvm/lib/CodeGen/LiveDebugVariables.cpp
    M llvm/lib/CodeGen/LiveRangeShrink.cpp
    M llvm/lib/CodeGen/MachineInstr.cpp
    M llvm/lib/CodeGen/MachineRegisterInfo.cpp
    M llvm/lib/CodeGen/MachineSink.cpp
    M llvm/lib/CodeGen/PrologEpilogInserter.cpp
    M llvm/lib/CodeGen/RegAllocFast.cpp
    M llvm/lib/CodeGen/RegisterCoalescer.cpp
    M llvm/lib/Target/AArch64/AArch64AsmPrinter.cpp
    M llvm/lib/Target/NVPTX/NVPTXPrologEpilogPass.cpp
    M llvm/lib/Target/SystemZ/SystemZRegisterInfo.cpp
    M llvm/lib/Target/WebAssembly/WebAssemblyDebugValueManager.cpp
    M llvm/lib/Target/X86/X86OptimizeLEAs.cpp

  Log Message:
  -----------
  [DebugInfo] Update MachineInstr to help support variadic DBG_VALUE instructions

Following on from this RFC[0] from a while back, this is the first patch towards
implementing variadic debug values.

This patch specifically adds a set of functions to MachineInstr for performing
operations specific to debug values, and replacing uses of the more general
functions where appropriate. The most prevalent of these is replacing
getOperand(0) with getDebugOperand(0) for debug-value-specific code, as the
operands corresponding to values will no longer be at index 0, but index 2 and
upwards: getDebugOperand(x) == getOperand(x+2). Similar replacements have been
added for the other operands, along with some helper functions to replace
oft-repeated code and operate on a variable number of value operands.

[0] http://lists.llvm.org/pipermail/llvm-dev/2020-February/139376.html<Paste>

Differential Revision: https://reviews.llvm.org/D81852