[all-commits] [llvm/llvm-project] d3af44: [DebugInstrRef][1/9] Add fields for instr-ref vari...

[Jeremy Morse via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: d3af441dfeb69d4c2a91b427e3d7a57e04c59201
      https://github.com/llvm/llvm-project/commit/d3af441dfeb69d4c2a91b427e3d7a57e04c59201
  Author: Jeremy Morse <jeremy.morse at sony.com>
  Date:   2020-09-14 (Mon, 14 Sep 2020)

  Changed paths:
    M llvm/include/llvm/CodeGen/MachineFunction.h
    M llvm/include/llvm/CodeGen/MachineInstr.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/MachineInstr.cpp

  Log Message:
  -----------
  [DebugInstrRef][1/9] Add fields for instr-ref variable locations

Add a DBG_INSTR_REF instruction and a "debug instruction number" field to
MachineInstr. The two allow variable values to be specified by
identifying where the value is computed, rather than the register it lies
in, like so:

  %0 = fooinst, debug-instr-number 1
  [...]
  DBG_INSTR_REF 1, 0

See the original RFC for motivation:
http://lists.llvm.org/pipermail/llvm-dev/2020-February/139440.html

This patch is NFCI; it only adds fields and other boiler plate.

Differential Revision: https://reviews.llvm.org/D85741