[all-commits] [llvm/llvm-project] e10e93: [DebugInfo][NFC] Add new MachineOperand type and c...

Fri Jan 6 10:04:08 PST 2023

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e10e936315410abd222eb58911b1e20fbfa80baf
      https://github.com/llvm/llvm-project/commit/e10e936315410abd222eb58911b1e20fbfa80baf
  Author: Stephen Tozer <Stephen.Tozer at Sony.com>
  Date:   2023-01-06 (Fri, 06 Jan 2023)

  Changed paths:
    M llvm/docs/MIRLangRef.rst
    M llvm/include/llvm/CodeGen/MachineInstr.h
    M llvm/include/llvm/CodeGen/MachineInstrBuilder.h
    M llvm/include/llvm/CodeGen/MachineOperand.h
    M llvm/lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.cpp
    M llvm/lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.h
    M llvm/lib/CodeGen/LiveDebugVariables.cpp
    M llvm/lib/CodeGen/MIRParser/MILexer.cpp
    M llvm/lib/CodeGen/MIRParser/MILexer.h
    M llvm/lib/CodeGen/MIRParser/MIParser.cpp
    M llvm/lib/CodeGen/MIRPrinter.cpp
    M llvm/lib/CodeGen/MIRVRegNamerUtils.cpp
    M llvm/lib/CodeGen/MachineFunction.cpp
    M llvm/lib/CodeGen/MachineInstr.cpp
    M llvm/lib/CodeGen/MachineOperand.cpp
    M llvm/lib/CodeGen/MachineSink.cpp
    M llvm/lib/CodeGen/MachineStableHash.cpp
    M llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
    M llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
    M llvm/lib/Target/ARM/ARMExpandPseudoInsts.cpp
    M llvm/test/CodeGen/X86/dbg-value-superreg-copy2.mir
    M llvm/test/CodeGen/X86/post-ra-sched-with-debug.mir
    M llvm/test/DebugInfo/AArch64/instr-ref-const-physreg.ll
    M llvm/test/DebugInfo/ARM/instr-ref-tcreturn.ll
    M llvm/test/DebugInfo/MIR/InstrRef/accept-nonlive-reg-phis.mir
    M llvm/test/DebugInfo/MIR/InstrRef/dbg-phi-subregister-location.mir
    M llvm/test/DebugInfo/MIR/InstrRef/dbg-phis-in-ldv.mir
    M llvm/test/DebugInfo/MIR/InstrRef/dbg-phis-in-ldv2.mir
    M llvm/test/DebugInfo/MIR/InstrRef/dbg-phis-merging-in-ldv.mir
    M llvm/test/DebugInfo/MIR/InstrRef/dbg-phis-with-loops.mir
    M llvm/test/DebugInfo/MIR/InstrRef/deref-spills-with-size.mir
    M llvm/test/DebugInfo/MIR/InstrRef/follow-spill-of-live-value.mir
    M llvm/test/DebugInfo/MIR/InstrRef/livedebugvalues_illegal_locs.mir
    M llvm/test/DebugInfo/MIR/InstrRef/livedebugvalues_instrref_tolocs.mir
    M llvm/test/DebugInfo/MIR/InstrRef/livedebugvalues_stackslot_subregs.mir
    M llvm/test/DebugInfo/MIR/InstrRef/livedebugvalues_subreg_substitutions.mir
    M llvm/test/DebugInfo/MIR/InstrRef/memory-operand-folding-tieddef.mir
    M llvm/test/DebugInfo/MIR/InstrRef/memory-operand-load-folding.mir
    M llvm/test/DebugInfo/MIR/InstrRef/memory-operand-tracking.mir
    M llvm/test/DebugInfo/MIR/InstrRef/out-of-scope-blocks.mir
    M llvm/test/DebugInfo/MIR/InstrRef/phi-coalesce-subreg.mir
    M llvm/test/DebugInfo/MIR/InstrRef/phi-coalescing.mir
    M llvm/test/DebugInfo/MIR/InstrRef/phi-on-stack-coalesced.mir
    M llvm/test/DebugInfo/MIR/InstrRef/phi-on-stack-coalesced2.mir
    M llvm/test/DebugInfo/MIR/InstrRef/phi-regallocd-to-stack.mir
    M llvm/test/DebugInfo/MIR/InstrRef/phi-through-regalloc.mir
    M llvm/test/DebugInfo/MIR/InstrRef/pick-vphi-in-shifting-loop.mir
    M llvm/test/DebugInfo/MIR/InstrRef/spill-slot-limits.mir
    M llvm/test/DebugInfo/MIR/InstrRef/stack-coloring-dbg-phi.mir
    M llvm/test/DebugInfo/MIR/InstrRef/substitusions-roundtrip.mir
    M llvm/test/DebugInfo/MIR/InstrRef/survives-livedebugvars.mir
    M llvm/test/DebugInfo/MIR/InstrRef/twoaddr-to-threeaddr-sub.mir
    M llvm/test/DebugInfo/MIR/InstrRef/win32-chkctk-modifies-esp.mir
    M llvm/test/DebugInfo/MIR/InstrRef/x86-drop-compare-inst.mir
    M llvm/test/DebugInfo/MIR/X86/instr-ref-join-def-vphi.mir
    M llvm/test/DebugInfo/X86/dbg-value-arg-movement.ll
    M llvm/test/DebugInfo/X86/dbg-value-funcarg.ll
    M llvm/test/DebugInfo/X86/dbg-value-funcarg2.ll
    M llvm/test/DebugInfo/X86/dbg-value-funcarg4.ll
    M llvm/test/DebugInfo/X86/instr-ref-dbg-declare.ll
    M llvm/test/DebugInfo/X86/instr-ref-dyn-alloca-win32.ll
    M llvm/test/DebugInfo/X86/instr-ref-ir-reg-read.ll
    M llvm/test/DebugInfo/X86/instr-ref-sdag-empty-vreg.ll
    M llvm/test/DebugInfo/X86/instr-ref-selectiondag.ll
    M llvm/test/DebugInfo/X86/pr34545.ll
    M llvm/test/DebugInfo/X86/pr40427.ll
    M llvm/test/DebugInfo/X86/sdag-dangling-dbgvalue.ll
    M llvm/test/DebugInfo/X86/sdag-dbgvalue-phi-use-1.ll
    M llvm/test/DebugInfo/X86/sdag-dbgvalue-phi-use-2.ll
    M llvm/test/DebugInfo/X86/sdag-dbgvalue-phi-use-3.ll
    M llvm/test/DebugInfo/X86/sdag-dbgvalue-phi-use-4.ll
    M llvm/test/DebugInfo/X86/sdag-dbgvalue-ssareg.ll
    M llvm/test/DebugInfo/X86/sdag-ir-salvage.ll
    M llvm/test/DebugInfo/X86/sdag-salvage-add.ll
    M llvm/test/DebugInfo/X86/sdag-transfer-dbgvalue.ll
    M llvm/test/DebugInfo/assignment-tracking/X86/loop-sink.ll
    M llvm/test/DebugInfo/assignment-tracking/X86/lower-to-value.ll
    M llvm/test/DebugInfo/assignment-tracking/X86/sdag-dangling-dbgassign.ll
    M llvm/test/DebugInfo/assignment-tracking/X86/sdag-ir-salvage-assign.ll
    M llvm/test/DebugInfo/assignment-tracking/X86/sdag-transfer-dbgassign.ll

  Log Message:
  -----------
  [DebugInfo][NFC] Add new MachineOperand type and change DBG_INSTR_REF syntax

This patch makes two notable changes to the MIR debug info representation,
which result in different MIR output but identical final DWARF output (NFC
w.r.t. the full compilation). The two changes are:

  * The introduction of a new MachineOperand type, MO_DbgInstrRef, which
    consists of two unsigned numbers that are used to index an instruction
    and an output operand within that instruction, having a meaning
    identical to first two operands of the current DBG_INSTR_REF
    instruction. This operand is only used in DBG_INSTR_REF (see below).
  * A change in syntax for the DBG_INSTR_REF instruction, shuffling the
    operands to make it resemble DBG_VALUE_LIST instead of DBG_VALUE,
    and replacing the first two operands with a single MO_DbgInstrRef-type
    operand.

This patch is the first of a set that will allow DBG_INSTR_REF
instructions to refer to multiple machine locations in the same manner
as DBG_VALUE_LIST.

Reviewed By: jmorse

Differential Revision: https://reviews.llvm.org/D129372