[llvm] r257060 - Added support for macro emission in dwarf (supporting DWARF version 4).
Adrian Prantl via llvm-commits
llvm-commits at lists.llvm.org
Wed Jan 13 15:19:28 PST 2016
> On Jan 13, 2016, at 3:09 PM, David Blaikie <dblaikie at gmail.com> wrote:
>
>
>
> On Thu, Jan 7, 2016 at 6:28 AM, Amjad Aboud via llvm-commits <llvm-commits at lists.llvm.org <mailto: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 <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 <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 <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 <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 <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?
>
Yeah I think you’re right. Using compile-time-resolved labels to compute the sizes is superior to this.
-- adrian
> +}
> +
> +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 <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 <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 <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 <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 <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 <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 <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 <http://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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