[llvm] r257060 - Added support for macro emission in dwarf (supporting DWARF version 4).

David Blaikie via llvm-commits llvm-commits at lists.llvm.org
Wed Jan 13 15:09:35 PST 2016


On Thu, Jan 7, 2016 at 6:28 AM, Amjad Aboud via llvm-commits <
llvm-commits at lists.llvm.org> wrote:

> Author: aaboud
> Date: Thu Jan  7 08:28:20 2016
> New Revision: 257060
>
> URL: http://llvm.org/viewvc/llvm-project?rev=257060&view=rev
> Log:
> Added support for macro emission in dwarf (supporting DWARF version 4).
>
> Differential Revision: http://reviews.llvm.org/D15495
>
> Added:
>     llvm/trunk/test/DebugInfo/X86/debug-macro.ll
> Modified:
>     llvm/trunk/include/llvm/CodeGen/DIE.h
>     llvm/trunk/include/llvm/MC/MCObjectFileInfo.h
>     llvm/trunk/lib/CodeGen/AsmPrinter/DIE.cpp
>     llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
>     llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.h
>     llvm/trunk/lib/IR/Verifier.cpp
>     llvm/trunk/lib/MC/MCObjectFileInfo.cpp
>     llvm/trunk/lib/Target/NVPTX/NVPTXISelLowering.cpp
>     llvm/trunk/lib/Target/NVPTX/NVPTXTargetObjectFile.h
>
> Modified: llvm/trunk/include/llvm/CodeGen/DIE.h
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/DIE.h?rev=257060&r1=257059&r2=257060&view=diff
>
> ==============================================================================
> --- llvm/trunk/include/llvm/CodeGen/DIE.h (original)
> +++ llvm/trunk/include/llvm/CodeGen/DIE.h Thu Jan  7 08:28:20 2016
> @@ -29,6 +29,48 @@ class MCSymbol;
>  class raw_ostream;
>  class DwarfTypeUnit;
>
> +// AsmStreamerBase - A base abstract interface class defines methods that
> +// can be implemented to stream objects or can be implemented to
> +// calculate the size of the streamed objects.
> +// The derived classes will use an AsmPrinter to implement the methods.
> +//
> +// TODO: complete this interface and use it to merge EmitValue and SizeOf
> +//       methods in the DIE classes below.
>

Adrian do you really reckon we need/want this abstraction?

I think this is a bit of a divergence from the way the rest of the DWARF
emission is done, where we rely on relocations (most of which are resolved
at object emission time - they aren't actually dynamic relocs) to compute
the size/offsets of section contributions of DWARF to the CU, etc. Is there
a reason that doesn't work/is worse/different in this case?


> +class AsmStreamerBase {
> +protected:
> +  const AsmPrinter *AP;
> +  AsmStreamerBase(const AsmPrinter *AP) : AP(AP) {}
> +
> +public:
> +  virtual ~AsmStreamerBase() {}
> +  virtual unsigned emitULEB128(uint64_t Value, const char *Desc = nullptr,
> +                               unsigned PadTo = 0) = 0;
> +  virtual unsigned emitInt8(unsigned char Value) = 0;
> +  virtual unsigned emitBytes(StringRef Data) = 0;
> +};
> +
> +/// EmittingAsmStreamer - Implements AbstractAsmStreamer to stream
> objects.
> +/// Notice that the return value is not the actual size of the streamed
> object.
> +/// For size calculation use SizeReporterAsmStreamer.
> +class EmittingAsmStreamer : public AsmStreamerBase {
> +public:
> +  EmittingAsmStreamer(const AsmPrinter *AP) : AsmStreamerBase(AP) {}
> +  unsigned emitULEB128(uint64_t Value, const char *Desc = nullptr,
> +                       unsigned PadTo = 0) override;
> +  unsigned emitInt8(unsigned char Value) override;
> +  unsigned emitBytes(StringRef Data) override;
> +};
> +
> +/// SizeReporterAsmStreamer - Only reports the size of the streamed
> objects.
> +class SizeReporterAsmStreamer : public AsmStreamerBase {
> +public:
> +  SizeReporterAsmStreamer(const AsmPrinter *AP) : AsmStreamerBase(AP) {}
> +  unsigned emitULEB128(uint64_t Value, const char *Desc = nullptr,
> +                       unsigned PadTo = 0) override;
> +  unsigned emitInt8(unsigned char Value) override;
> +  unsigned emitBytes(StringRef Data) override;
> +};
> +
>
>  //===--------------------------------------------------------------------===//
>  /// DIEAbbrevData - Dwarf abbreviation data, describes one attribute of a
>  /// Dwarf abbreviation.
>
> Modified: llvm/trunk/include/llvm/MC/MCObjectFileInfo.h
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/MC/MCObjectFileInfo.h?rev=257060&r1=257059&r2=257060&view=diff
>
> ==============================================================================
> --- llvm/trunk/include/llvm/MC/MCObjectFileInfo.h (original)
> +++ llvm/trunk/include/llvm/MC/MCObjectFileInfo.h Thu Jan  7 08:28:20 2016
> @@ -92,6 +92,7 @@ protected:
>    MCSection *DwarfLocSection;
>    MCSection *DwarfARangesSection;
>    MCSection *DwarfRangesSection;
> +  MCSection *DwarfMacinfoSection;
>    // The pubnames section is no longer generated by default.  The
> generation
>    // can be enabled by a compiler flag.
>    MCSection *DwarfPubNamesSection;
> @@ -245,6 +246,7 @@ public:
>    MCSection *getDwarfLocSection() const { return DwarfLocSection; }
>    MCSection *getDwarfARangesSection() const { return DwarfARangesSection;
> }
>    MCSection *getDwarfRangesSection() const { return DwarfRangesSection; }
> +  MCSection *getDwarfMacinfoSection() const { return DwarfMacinfoSection;
> }
>
>    // DWARF5 Experimental Debug Info Sections
>    MCSection *getDwarfAccelNamesSection() const {
>
> Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DIE.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DIE.cpp?rev=257060&r1=257059&r2=257060&view=diff
>
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/AsmPrinter/DIE.cpp (original)
> +++ llvm/trunk/lib/CodeGen/AsmPrinter/DIE.cpp Thu Jan  7 08:28:20 2016
> @@ -32,6 +32,39 @@
>  using namespace llvm;
>
>
>  //===----------------------------------------------------------------------===//
> +// EmittingAsmStreamer Implementation
>
> +//===----------------------------------------------------------------------===//
> +unsigned EmittingAsmStreamer::emitULEB128(uint64_t Value, const char
> *Desc,
> +                                          unsigned PadTo) {
> +  AP->EmitULEB128(Value, Desc, PadTo);
> +  return 0;


This is a slightly quirky API - isn't it problematic for a caller, if they
don't know which kind of AsmStreamer they're interacting with - and one
produces sizes, the other produces zeros. That seems... not good?


> +}
> +
> +unsigned EmittingAsmStreamer::emitInt8(unsigned char Value) {
> +  AP->EmitInt8(Value);
> +  return 0;
> +}
> +
> +unsigned EmittingAsmStreamer::emitBytes(StringRef Data) {
> +  AP->OutStreamer->EmitBytes(Data);
> +  return 0;
> +}
> +
>
> +//===----------------------------------------------------------------------===//
> +// SizeReporterAsmStreamer Implementation
>
> +//===----------------------------------------------------------------------===//
> +unsigned SizeReporterAsmStreamer::emitULEB128(uint64_t Value, const char
> *Desc,
> +                                              unsigned PadTo) {
> +  return getULEB128Size(Value);
> +}
> +
> +unsigned SizeReporterAsmStreamer::emitInt8(unsigned char Value) { return
> 1; }
> +
> +unsigned SizeReporterAsmStreamer::emitBytes(StringRef Data) {
> +  return Data.size();
> +}
> +
>
> +//===----------------------------------------------------------------------===//
>  // DIEAbbrevData Implementation
>
>  //===----------------------------------------------------------------------===//
>
>
> Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp?rev=257060&r1=257059&r2=257060&view=diff
>
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp (original)
> +++ llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp Thu Jan  7 08:28:20
> 2016
> @@ -561,6 +561,8 @@ void DwarfDebug::finalizeModuleInfo() {
>    // Collect info for variables that were optimized out.
>    collectDeadVariables();
>
> +  unsigned MacroOffset = 0;
> +  std::unique_ptr<AsmStreamerBase> AS(new SizeReporterAsmStreamer(Asm));
>    // Handle anything that needs to be done on a per-unit basis after
>    // all other generation.
>    for (const auto &P : CUMap) {
> @@ -613,6 +615,15 @@ void DwarfDebug::finalizeModuleInfo() {
>          U.setBaseAddress(TheCU.getRanges().front().getStart());
>        U.attachRangesOrLowHighPC(U.getUnitDie(), TheCU.takeRanges());
>      }
> +
> +    auto *CUNode = cast<DICompileUnit>(P.first);
> +    if (CUNode->getMacros()) {
> +      // Compile Unit has macros, emit "DW_AT_macro_info" attribute.
> +      U.addUInt(U.getUnitDie(), dwarf::DW_AT_macro_info,
> +                dwarf::DW_FORM_sec_offset, MacroOffset);
> +      // Update macro section offset
> +      MacroOffset += handleMacroNodes(AS.get(), CUNode->getMacros(), U);
> +    }
>    }
>
>    // Compute DIE offsets and sizes.
> @@ -656,6 +667,9 @@ void DwarfDebug::endModule() {
>    // Emit info into a debug ranges section.
>    emitDebugRanges();
>
> +  // Emit info into a debug macinfo section.
> +  emitDebugMacinfo();
> +
>    if (useSplitDwarf()) {
>      emitDebugStrDWO();
>      emitDebugInfoDWO();
> @@ -1833,6 +1847,70 @@ void DwarfDebug::emitDebugRanges() {
>    }
>  }
>
> +unsigned DwarfDebug::handleMacroNodes(AsmStreamerBase *AS,
> +                                      DIMacroNodeArray Nodes,
> +                                      DwarfCompileUnit &U) {
> +  unsigned Size = 0;
> +  for (auto *MN : Nodes) {
> +    if (auto *M = dyn_cast<DIMacro>(MN))
> +      Size += emitMacro(AS, *M);
> +    else if (auto *F = dyn_cast<DIMacroFile>(MN))
> +      Size += emitMacroFile(AS, *F, U);
> +    else
> +      llvm_unreachable("Unexpected DI type!");
> +  }
> +  return Size;
> +}
> +
> +unsigned DwarfDebug::emitMacro(AsmStreamerBase *AS, DIMacro &M) {
> +  int Size = 0;
> +  Size += AS->emitULEB128(M.getMacinfoType());
> +  Size += AS->emitULEB128(M.getLine());
> +  StringRef Name = M.getName();
> +  StringRef Value = M.getValue();
> +  Size += AS->emitBytes(Name);
> +  if (!Value.empty()) {
> +    // There should be one space between macro name and macro value.
> +    Size += AS->emitInt8(' ');
> +    Size += AS->emitBytes(Value);
> +  }
> +  Size += AS->emitInt8('\0');
> +  return Size;
> +}
> +
> +unsigned DwarfDebug::emitMacroFile(AsmStreamerBase *AS, DIMacroFile &F,
> +                                   DwarfCompileUnit &U) {
> +  int Size = 0;
> +  assert(F.getMacinfoType() == dwarf::DW_MACINFO_start_file);
> +  Size += AS->emitULEB128(dwarf::DW_MACINFO_start_file);
> +  Size += AS->emitULEB128(F.getLine());
> +  DIFile *File = F.getFile();
> +  unsigned FID =
> +      U.getOrCreateSourceID(File->getFilename(), File->getDirectory());
> +  Size += AS->emitULEB128(FID);
> +  Size += handleMacroNodes(AS, F.getElements(), U);
> +  Size += AS->emitULEB128(dwarf::DW_MACINFO_end_file);
> +  return Size;
> +}
> +
> +// Emit visible names into a debug macinfo section.
> +void DwarfDebug::emitDebugMacinfo() {
> +  if (MCSection *Macinfo =
> Asm->getObjFileLowering().getDwarfMacinfoSection()) {
> +    // Start the dwarf macinfo section.
> +    Asm->OutStreamer->SwitchSection(Macinfo);
> +  }
> +  std::unique_ptr<AsmStreamerBase> AS(new EmittingAsmStreamer(Asm));
> +  for (const auto &P : CUMap) {
> +    auto &TheCU = *P.second;
> +    auto *SkCU = TheCU.getSkeleton();
> +    DwarfCompileUnit &U = SkCU ? *SkCU : TheCU;
> +    auto *CUNode = cast<DICompileUnit>(P.first);
> +    handleMacroNodes(AS.get(), CUNode->getMacros(), U);
> +  }
> +  Asm->OutStreamer->AddComment("End Of Macro List Mark");
> +  Asm->EmitInt8(0);
> +}
> +
>  // DWARF5 Experimental Separate Dwarf emitters.
>
>  void DwarfDebug::initSkeletonUnit(const DwarfUnit &U, DIE &Die,
>
> Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.h
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.h?rev=257060&r1=257059&r2=257060&view=diff
>
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.h (original)
> +++ llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.h Thu Jan  7 08:28:20 2016
> @@ -400,18 +400,26 @@ class DwarfDebug : public AsmPrinterHand
>    /// Emit visible names into a debug str section.
>    void emitDebugStr();
>
> -  /// Emit visible names into a debug loc section.
> +  /// Emit variable locations into a debug loc section.
>    void emitDebugLoc();
>
> -  /// Emit visible names into a debug loc dwo section.
> +  /// Emit variable locations into a debug loc dwo section.
>    void emitDebugLocDWO();
>
> -  /// Emit visible names into a debug aranges section.
> +  /// Emit address ranges into a debug aranges section.
>    void emitDebugARanges();
>
> -  /// Emit visible names into a debug ranges section.
> +  /// Emit address ranges into a debug ranges section.
>    void emitDebugRanges();
>
> +  /// Emit macros into a debug macinfo section.
> +  void emitDebugMacinfo();
> +  unsigned emitMacro(AsmStreamerBase *AS, DIMacro &M);
> +  unsigned emitMacroFile(AsmStreamerBase *AS, DIMacroFile &F,
> +                         DwarfCompileUnit &U);
> +  unsigned handleMacroNodes(AsmStreamerBase *AS, DIMacroNodeArray Nodes,
> +                            DwarfCompileUnit &U);
> +
>    /// DWARF 5 Experimental Split Dwarf Emitters
>
>    /// Initialize common features of skeleton units.
>
> Modified: llvm/trunk/lib/IR/Verifier.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/Verifier.cpp?rev=257060&r1=257059&r2=257060&view=diff
>
> ==============================================================================
> --- llvm/trunk/lib/IR/Verifier.cpp (original)
> +++ llvm/trunk/lib/IR/Verifier.cpp Thu Jan  7 08:28:20 2016
> @@ -984,6 +984,9 @@ void Verifier::visitDIMacro(const DIMacr
>           N.getMacinfoType() == dwarf::DW_MACINFO_undef,
>           "invalid macinfo type", &N);
>    Assert(!N.getName().empty(), "anonymous macro", &N);
> +  if (!N.getValue().empty()) {
> +    assert(N.getValue().data()[0] != ' ' && "Macro value has a space
> prefix");
> +  }
>  }
>
>  void Verifier::visitDIMacroFile(const DIMacroFile &N) {
>
> Modified: llvm/trunk/lib/MC/MCObjectFileInfo.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/MC/MCObjectFileInfo.cpp?rev=257060&r1=257059&r2=257060&view=diff
>
> ==============================================================================
> --- llvm/trunk/lib/MC/MCObjectFileInfo.cpp (original)
> +++ llvm/trunk/lib/MC/MCObjectFileInfo.cpp Thu Jan  7 08:28:20 2016
> @@ -256,6 +256,9 @@ void MCObjectFileInfo::initMachOMCObject
>    DwarfRangesSection =
>        Ctx->getMachOSection("__DWARF", "__debug_ranges",
> MachO::S_ATTR_DEBUG,
>                             SectionKind::getMetadata(), "debug_range");
> +  DwarfMacinfoSection =
> +      Ctx->getMachOSection("__DWARF", "__debug_macinfo",
> MachO::S_ATTR_DEBUG,
> +                           SectionKind::getMetadata());
>    DwarfDebugInlineSection =
>        Ctx->getMachOSection("__DWARF", "__debug_inlined",
> MachO::S_ATTR_DEBUG,
>                             SectionKind::getMetadata());
> @@ -505,6 +508,8 @@ void MCObjectFileInfo::initELFMCObjectFi
>        Ctx->getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0);
>    DwarfRangesSection =
>        Ctx->getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0,
> "debug_range");
> +  DwarfMacinfoSection =
> +      Ctx->getELFSection(".debug_macinfo", ELF::SHT_PROGBITS, 0);
>
>    // DWARF5 Experimental Debug Info
>
> @@ -684,6 +689,11 @@ void MCObjectFileInfo::initCOFFMCObjectF
>        COFF::IMAGE_SCN_MEM_DISCARDABLE |
> COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
>            COFF::IMAGE_SCN_MEM_READ,
>        SectionKind::getMetadata(), "debug_range");
> +  DwarfMacinfoSection = Ctx->getCOFFSection(
> +      ".debug_macinfo",
> +      COFF::IMAGE_SCN_MEM_DISCARDABLE |
> COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
> +          COFF::IMAGE_SCN_MEM_READ,
> +      SectionKind::getMetadata());
>    DwarfInfoDWOSection = Ctx->getCOFFSection(
>        ".debug_info.dwo",
>        COFF::IMAGE_SCN_MEM_DISCARDABLE |
> COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
>
> Modified: llvm/trunk/lib/Target/NVPTX/NVPTXISelLowering.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/NVPTX/NVPTXISelLowering.cpp?rev=257060&r1=257059&r2=257060&view=diff
>
> ==============================================================================
> --- llvm/trunk/lib/Target/NVPTX/NVPTXISelLowering.cpp (original)
> +++ llvm/trunk/lib/Target/NVPTX/NVPTXISelLowering.cpp Thu Jan  7 08:28:20
> 2016
> @@ -4549,6 +4549,7 @@ NVPTXTargetObjectFile::~NVPTXTargetObjec
>    delete static_cast<NVPTXSection *>(DwarfLocSection);
>    delete static_cast<NVPTXSection *>(DwarfARangesSection);
>    delete static_cast<NVPTXSection *>(DwarfRangesSection);
> +  delete static_cast<NVPTXSection *>(DwarfMacinfoSection);
>  }
>
>  MCSection *
>
> Modified: llvm/trunk/lib/Target/NVPTX/NVPTXTargetObjectFile.h
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/NVPTX/NVPTXTargetObjectFile.h?rev=257060&r1=257059&r2=257060&view=diff
>
> ==============================================================================
> --- llvm/trunk/lib/Target/NVPTX/NVPTXTargetObjectFile.h (original)
> +++ llvm/trunk/lib/Target/NVPTX/NVPTXTargetObjectFile.h Thu Jan  7
> 08:28:20 2016
> @@ -41,6 +41,7 @@ public:
>      DwarfLocSection = nullptr;
>      DwarfARangesSection = nullptr;
>      DwarfRangesSection = nullptr;
> +    DwarfMacinfoSection = nullptr;
>    }
>
>    virtual ~NVPTXTargetObjectFile();
> @@ -81,6 +82,8 @@ public:
>          new NVPTXSection(MCSection::SV_ELF, SectionKind::getMetadata());
>      DwarfRangesSection =
>          new NVPTXSection(MCSection::SV_ELF, SectionKind::getMetadata());
> +    DwarfMacinfoSection =
> +        new NVPTXSection(MCSection::SV_ELF, SectionKind::getMetadata());
>    }
>
>    MCSection *getSectionForConstant(const DataLayout &DL, SectionKind Kind,
>
> Added: llvm/trunk/test/DebugInfo/X86/debug-macro.ll
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/X86/debug-macro.ll?rev=257060&view=auto
>
> ==============================================================================
> --- llvm/trunk/test/DebugInfo/X86/debug-macro.ll (added)
> +++ llvm/trunk/test/DebugInfo/X86/debug-macro.ll Thu Jan  7 08:28:20 2016
> @@ -0,0 +1,67 @@
> +; RUN: %llc_dwarf -O0 -filetype=obj < %s | llvm-dwarfdump
> -debug-dump=info - | FileCheck --check-prefix=CHECK-INFO %s
> +; RUN: %llc_dwarf -O0 -filetype=obj < %s | llvm-dwarfdump
> -debug-dump=macro - | FileCheck --check-prefix=CHECK-MACRO %s
> +; RUN: %llc_dwarf -O0 -filetype=obj < %s | llvm-dwarfdump
> -debug-dump=line - | FileCheck --check-prefix=CHECK-LINE %s
> +
> +
> +; CHECK-INFO: .debug_info contents:
> +; CHECK-INFO: DW_TAG_compile_unit
> +; CHECK-INFO-NOT: DW_TAG
> +; CHECK-INFO:   DW_AT_name {{.*}}"debug-macro.cpp")
> +; CHECK-INFO:   DW_AT_macro_info {{.*}}(0x00000000)
> +; CHECK-INFO: DW_TAG_compile_unit
> +; CHECK-INFO-NOT: DW_TAG
> +; CHECK-INFO:   DW_AT_name {{.*}}"debug-macro1.cpp")
> +; CHECK-INFO:   DW_AT_macro_info {{.*}}(0x00000044)
> +; CHECK-INFO: DW_TAG_compile_unit
> +; CHECK-INFO-NOT: DW_TAG
> +; CHECK-INFO:   DW_AT_name {{.*}}"debug-macro2.cpp")
> +; CHECK-INFO-NOT: DW_AT_macro_info
> +
> +; CHECK-MACRO:     .debug_macinfo contents:
> +; CHECK-MACRO-NEXT: DW_MACINFO_define - lineno: 0 macro: NameCMD ValueCMD
> +; CHECK-MACRO-NEXT: DW_MACINFO_start_file - lineno: 0 filenum: 1
> +; CHECK-MACRO-NEXT:   DW_MACINFO_start_file - lineno: 9 filenum: 2
> +; CHECK-MACRO-NEXT:     DW_MACINFO_define - lineno: 1 macro: NameDef Value
> +; CHECK-MACRO-NEXT:     DW_MACINFO_undef - lineno: 11 macro: NameUndef
> +; CHECK-MACRO-NEXT:   DW_MACINFO_end_file
> +; CHECK-MACRO-NEXT:   DW_MACINFO_undef - lineno: 10 macro: NameUndef2
> +; CHECK-MACRO-NEXT: DW_MACINFO_end_file
> +; CHECK-MACRO-NEXT: DW_MACINFO_start_file - lineno: 0 filenum: 1
> +; CHECK-MACRO-NEXT: DW_MACINFO_end_file
> +
> +; CHECK-LINE: .debug_line contents:
> +; CHECK-LINE: Dir  Mod Time   File Len   File Name
> +; CHECK-LINE: file_names[  1] {{.*}}debug-macro.cpp
> +; CHECK-LINE: file_names[  2] {{.*}}debug-macro.h
> +; CHECK-LINE: Dir  Mod Time   File Len   File Name
> +; CHECK-LINE: file_names[  1] {{.*}}debug-macro1.cpp
> +
> +!llvm.dbg.cu = !{!0, !16, !20}
> +!llvm.module.flags = !{!13, !14}
> +!llvm.ident = !{!15}
> +
> +!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer:
> "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1,
> enums: !2, retainedTypes: !2, subprograms: !2, globals: !2, imports: !2,
> macros: !3)
> +!1 = !DIFile(filename: "debug-macro.cpp", directory: "/")
> +!2 = !{}
> +!3 = !{!4, !5}
> +!4 = !DIMacro(type: DW_MACINFO_define, line: 0, name: "NameCMD", value:
> "ValueCMD")
> +!5 = !DIMacroFile(line: 0, file: !1, nodes: !6)
> +!6 = !{!7, !12}
> +!7 = !DIMacroFile(line: 9, file: !8, nodes: !9)
> +!8 = !DIFile(filename: "debug-macro.h", directory: "/")
> +!9 = !{!10, !11}
> +!10 = !DIMacro(type: DW_MACINFO_define, line: 1, name: "NameDef", value:
> "Value")
> +!11 = !DIMacro(type: DW_MACINFO_undef, line: 11, name: "NameUndef")
> +!12 = !DIMacro(type: DW_MACINFO_undef, line: 10, name: "NameUndef2")
> +
> +!13 = !{i32 2, !"Dwarf Version", i32 4}
> +!14 = !{i32 1, !"Debug Info Version", i32 3}
> +!15 = !{!"clang version 3.5.0 "}
> +
> +!16 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer:
> "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !17,
> enums: !2, retainedTypes: !2, subprograms: !2, globals: !2, imports: !2,
> macros: !18)
> +!17 = !DIFile(filename: "debug-macro1.cpp", directory: "/")
> +!18 = !{!19}
> +!19 = !DIMacroFile(line: 0, file: !17, nodes: !2)
> +
> +!20 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer:
> "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !21,
> enums: !2, retainedTypes: !2, subprograms: !2, globals: !2, imports: !2)
> +!21 = !DIFile(filename: "debug-macro2.cpp", directory: "/")
>
>
> _______________________________________________
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> llvm-commits at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-commits
>
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