[all-commits] [llvm/llvm-project] 1db137: [DebugInfo] Handle DBG_VALUES with multiple variab...

[Stephen Tozer via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1db137b1859692ae33228c530d4df9f2431b2151
      https://github.com/llvm/llvm-project/commit/1db137b1859692ae33228c530d4df9f2431b2151
  Author: Stephen Tozer <Stephen.Tozer at Sony.com>
  Date:   2021-03-10 (Wed, 10 Mar 2021)

  Changed paths:
    M llvm/include/llvm/CodeGen/MachineInstr.h
    M llvm/include/llvm/CodeGen/MachineInstrBuilder.h
    M llvm/lib/CodeGen/InlineSpiller.cpp
    M llvm/lib/CodeGen/MachineInstr.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/WebAssembly/WebAssemblyDebugValueManager.cpp
    M llvm/lib/Target/WebAssembly/WebAssemblyDebugValueManager.h

  Log Message:
  -----------
  [DebugInfo] Handle DBG_VALUES with multiple variable location operands in MIR

This patch adds handling for DBG_VALUE_LIST in the MIR-passes (after
finalize-isel), excluding the debug liveness passes and DWARF emission. This
most significantly affects MachineSink, which now needs to consider all used
registers of a debug value when sinking, but for most passes this change is
simply replacing getDebugOperand(0) with an iteration over all debug operands.

Differential Revision: https://reviews.llvm.org/D92578