Index: clang/include/clang/Frontend/CodeGenOptions.h
===================================================================
--- clang/include/clang/Frontend/CodeGenOptions.h
+++ clang/include/clang/Frontend/CodeGenOptions.h
@@ -163,6 +163,11 @@
/// file, for example with -save-temps.
std::string MainFileName;
+ /// The name of the primary output file, if non-empty. This is used by some
+ /// debug info backends that write the name of an output file into the debug
+ /// info.
+ std::string OutputFileName;
+
/// The name for the split debug info file that we'll break out. This is used
/// in the backend for setting the name in the skeleton cu.
std::string SplitDwarfFile;
Index: clang/lib/CodeGen/CGDebugInfo.cpp
===================================================================
--- clang/lib/CodeGen/CGDebugInfo.cpp
+++ clang/lib/CodeGen/CGDebugInfo.cpp
@@ -554,6 +554,7 @@
// Create new compile unit.
// FIXME - Eliminate TheCU.
+
auto &CGOpts = CGM.getCodeGenOpts();
TheCU = DBuilder.createCompileUnit(
LangTag,
@@ -563,7 +564,7 @@
CGOpts.DwarfDebugFlags, RuntimeVers,
CGOpts.EnableSplitDwarf ? "" : CGOpts.SplitDwarfFile, EmissionKind,
0 /* DWOid */, CGOpts.SplitDwarfInlining, CGOpts.DebugInfoForProfiling,
- CGOpts.GnuPubnames);
+ CGOpts.GnuPubnames, CGOpts.EmitCodeView ? CGOpts.OutputFileName : "");
}
llvm::DIType *CGDebugInfo::CreateType(const BuiltinType *BT) {
Index: clang/lib/Frontend/CompilerInvocation.cpp
===================================================================
--- clang/lib/Frontend/CompilerInvocation.cpp
+++ clang/lib/Frontend/CompilerInvocation.cpp
@@ -735,6 +735,7 @@
Opts.PreferVectorWidth = Args.getLastArgValue(OPT_mprefer_vector_width_EQ);
Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
+ Opts.OutputFileName = Args.getLastArgValue(OPT_o);
Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
Opts.ControlFlowGuard = Args.hasArg(OPT_cfguard);
Index: llvm/include/llvm/IR/DIBuilder.h
===================================================================
--- llvm/include/llvm/IR/DIBuilder.h
+++ llvm/include/llvm/IR/DIBuilder.h
@@ -107,7 +107,7 @@
/// A CompileUnit provides an anchor for all debugging
/// information generated during this instance of compilation.
/// \param Lang Source programming language, eg. dwarf::DW_LANG_C99
- /// \param File File info.
+ /// \param File Input File info.
/// \param Producer Identify the producer of debugging information
/// and code. Usually this is a compiler
/// version string.
@@ -128,15 +128,15 @@
/// profile collection.
/// \param GnuPubnames Whether to emit .debug_gnu_pubnames section instead
/// of .debug_pubnames.
- DICompileUnit *
- createCompileUnit(unsigned Lang, DIFile *File, StringRef Producer,
- bool isOptimized, StringRef Flags, unsigned RV,
- StringRef SplitName = StringRef(),
- DICompileUnit::DebugEmissionKind Kind =
- DICompileUnit::DebugEmissionKind::FullDebug,
- uint64_t DWOId = 0, bool SplitDebugInlining = true,
- bool DebugInfoForProfiling = false,
- bool GnuPubnames = false);
+ /// \param OutputFile Output File name.
+ DICompileUnit *createCompileUnit(
+ unsigned Lang, DIFile *File, StringRef Producer, bool isOptimized,
+ StringRef Flags, unsigned RV, StringRef SplitName = StringRef(),
+ DICompileUnit::DebugEmissionKind Kind =
+ DICompileUnit::DebugEmissionKind::FullDebug,
+ uint64_t DWOId = 0, bool SplitDebugInlining = true,
+ bool DebugInfoForProfiling = false, bool GnuPubnames = false,
+ StringRef OutputFile = StringRef());
/// Create a file descriptor to hold debugging information for a file.
/// \param Filename File name.
Index: llvm/include/llvm/IR/DebugInfoMetadata.h
===================================================================
--- llvm/include/llvm/IR/DebugInfoMetadata.h
+++ llvm/include/llvm/IR/DebugInfoMetadata.h
@@ -1133,14 +1133,16 @@
DIGlobalVariableExpressionArray GlobalVariables,
DIImportedEntityArray ImportedEntities, DIMacroNodeArray Macros,
uint64_t DWOId, bool SplitDebugInlining, bool DebugInfoForProfiling,
- bool GnuPubnames, StorageType Storage, bool ShouldCreate = true) {
+ bool GnuPubnames, StringRef OutputFile, StorageType Storage,
+ bool ShouldCreate = true) {
return getImpl(
Context, SourceLanguage, File, getCanonicalMDString(Context, Producer),
IsOptimized, getCanonicalMDString(Context, Flags), RuntimeVersion,
getCanonicalMDString(Context, SplitDebugFilename), EmissionKind,
EnumTypes.get(), RetainedTypes.get(), GlobalVariables.get(),
ImportedEntities.get(), Macros.get(), DWOId, SplitDebugInlining,
- DebugInfoForProfiling, GnuPubnames, Storage, ShouldCreate);
+ DebugInfoForProfiling, GnuPubnames,
+ getCanonicalMDString(Context, OutputFile), Storage, ShouldCreate);
}
static DICompileUnit *
getImpl(LLVMContext &Context, unsigned SourceLanguage, Metadata *File,
@@ -1149,17 +1151,17 @@
unsigned EmissionKind, Metadata *EnumTypes, Metadata *RetainedTypes,
Metadata *GlobalVariables, Metadata *ImportedEntities,
Metadata *Macros, uint64_t DWOId, bool SplitDebugInlining,
- bool DebugInfoForProfiling, bool GnuPubnames, StorageType Storage,
- bool ShouldCreate = true);
+ bool DebugInfoForProfiling, bool GnuPubnames, MDString *OutputFile,
+ StorageType Storage, bool ShouldCreate = true);
TempDICompileUnit cloneImpl() const {
- return getTemporary(getContext(), getSourceLanguage(), getFile(),
- getProducer(), isOptimized(), getFlags(),
- getRuntimeVersion(), getSplitDebugFilename(),
- getEmissionKind(), getEnumTypes(), getRetainedTypes(),
- getGlobalVariables(), getImportedEntities(),
- getMacros(), DWOId, getSplitDebugInlining(),
- getDebugInfoForProfiling(), getGnuPubnames());
+ return getTemporary(
+ getContext(), getSourceLanguage(), getFile(), getProducer(),
+ isOptimized(), getFlags(), getRuntimeVersion(), getSplitDebugFilename(),
+ getEmissionKind(), getEnumTypes(), getRetainedTypes(),
+ getGlobalVariables(), getImportedEntities(), getMacros(), DWOId,
+ getSplitDebugInlining(), getDebugInfoForProfiling(), getGnuPubnames(),
+ getOutputFile());
}
public:
@@ -1175,11 +1177,11 @@
DIGlobalVariableExpressionArray GlobalVariables,
DIImportedEntityArray ImportedEntities, DIMacroNodeArray Macros,
uint64_t DWOId, bool SplitDebugInlining, bool DebugInfoForProfiling,
- bool GnuPubnames),
+ bool GnuPubnames, StringRef OutputFile),
(SourceLanguage, File, Producer, IsOptimized, Flags, RuntimeVersion,
SplitDebugFilename, EmissionKind, EnumTypes, RetainedTypes,
GlobalVariables, ImportedEntities, Macros, DWOId, SplitDebugInlining,
- DebugInfoForProfiling, GnuPubnames))
+ DebugInfoForProfiling, GnuPubnames, OutputFile))
DEFINE_MDNODE_GET_DISTINCT_TEMPORARY(
DICompileUnit,
(unsigned SourceLanguage, Metadata *File, MDString *Producer,
@@ -1187,11 +1189,12 @@
MDString *SplitDebugFilename, unsigned EmissionKind, Metadata *EnumTypes,
Metadata *RetainedTypes, Metadata *GlobalVariables,
Metadata *ImportedEntities, Metadata *Macros, uint64_t DWOId,
- bool SplitDebugInlining, bool DebugInfoForProfiling, bool GnuPubnames),
+ bool SplitDebugInlining, bool DebugInfoForProfiling, bool GnuPubnames,
+ MDString *OutputFile),
(SourceLanguage, File, Producer, IsOptimized, Flags, RuntimeVersion,
SplitDebugFilename, EmissionKind, EnumTypes, RetainedTypes,
GlobalVariables, ImportedEntities, Macros, DWOId, SplitDebugInlining,
- DebugInfoForProfiling, GnuPubnames))
+ DebugInfoForProfiling, GnuPubnames, OutputFile))
TempDICompileUnit clone() const { return cloneImpl(); }
@@ -1206,6 +1209,7 @@
StringRef getProducer() const { return getStringOperand(1); }
StringRef getFlags() const { return getStringOperand(2); }
StringRef getSplitDebugFilename() const { return getStringOperand(3); }
+ StringRef getOutputFile() const { return getStringOperand(9); }
DICompositeTypeArray getEnumTypes() const {
return cast_or_null<MDTuple>(getRawEnumTypes());
}
@@ -1238,6 +1242,7 @@
Metadata *getRawGlobalVariables() const { return getOperand(6); }
Metadata *getRawImportedEntities() const { return getOperand(7); }
Metadata *getRawMacros() const { return getOperand(8); }
+ MDString *getRawOutputFile() const { return getOperandAs<MDString>(9); }
/// Replace arrays.
///
Index: llvm/lib/AsmParser/LLParser.cpp
===================================================================
--- llvm/lib/AsmParser/LLParser.cpp
+++ llvm/lib/AsmParser/LLParser.cpp
@@ -724,7 +724,7 @@
}
/// parseIndirectSymbol:
-/// ::= GlobalVar '=' OptionalLinkage OptionalPreemptionSpecifier
+/// ::= GlobalVar '=' OptionalLinkage OptionalPreemptionSpecifier
/// OptionalVisibility OptionalDLLStorageClass
/// OptionalThreadLocal OptionalUnnamedAddr
// 'alias|ifunc' IndirectSymbol
@@ -3775,7 +3775,7 @@
Lex.Lex();
return false;
}
-
+
template <>
bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
DwarfAttEncodingField &Result) {
@@ -4241,7 +4241,8 @@
OPTIONAL(dwoId, MDUnsignedField, ); \
OPTIONAL(splitDebugInlining, MDBoolField, = true); \
OPTIONAL(debugInfoForProfiling, MDBoolField, = false); \
- OPTIONAL(gnuPubnames, MDBoolField, = false);
+ OPTIONAL(gnuPubnames, MDBoolField, = false); \
+ OPTIONAL(outputFile, MDStringField, );
PARSE_MD_FIELDS();
#undef VISIT_MD_FIELDS
@@ -4249,7 +4250,8 @@
Context, language.Val, file.Val, producer.Val, isOptimized.Val, flags.Val,
runtimeVersion.Val, splitDebugFilename.Val, emissionKind.Val, enums.Val,
retainedTypes.Val, globals.Val, imports.Val, macros.Val, dwoId.Val,
- splitDebugInlining.Val, debugInfoForProfiling.Val, gnuPubnames.Val);
+ splitDebugInlining.Val, debugInfoForProfiling.Val, gnuPubnames.Val,
+ outputFile.Val);
return false;
}
Index: llvm/lib/Bitcode/Reader/MetadataLoader.cpp
===================================================================
--- llvm/lib/Bitcode/Reader/MetadataLoader.cpp
+++ llvm/lib/Bitcode/Reader/MetadataLoader.cpp
@@ -1365,7 +1365,7 @@
break;
}
case bitc::METADATA_COMPILE_UNIT: {
- if (Record.size() < 14 || Record.size() > 19)
+ if (Record.size() < 14 || Record.size() > 20)
return error("Invalid record");
// Ignore Record[0], which indicates whether this compile unit is
@@ -1380,7 +1380,8 @@
Record.size() <= 14 ? 0 : Record[14],
Record.size() <= 16 ? true : Record[16],
Record.size() <= 17 ? false : Record[17],
- Record.size() <= 18 ? false : Record[18]);
+ Record.size() <= 18 ? false : Record[18],
+ Record.size() <= 19 ? nullptr : getMDString(Record[19]));
MetadataList.assignValue(CU, NextMetadataNo);
NextMetadataNo++;
Index: llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
===================================================================
--- llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -1581,6 +1581,7 @@
Record.push_back(N->getSplitDebugInlining());
Record.push_back(N->getDebugInfoForProfiling());
Record.push_back(N->getGnuPubnames());
+ Record.push_back(VE.getMetadataOrNullID(N->getRawOutputFile()));
Stream.EmitRecord(bitc::METADATA_COMPILE_UNIT, Record, Abbrev);
Record.clear();
@@ -3714,7 +3715,7 @@
continue;
// The mapping from OriginalId to GUID may return a GUID
// that corresponds to a static variable. Filter it out here.
- // This can happen when
+ // This can happen when
// 1) There is a call to a library function which does not have
// a CallValidId;
// 2) There is a static variable with the OriginalGUID identical
Index: llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h
===================================================================
--- llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h
+++ llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h
@@ -221,6 +221,8 @@
void emitTypeGlobalHashes();
+ void emitObjName();
+
void emitCompilerInformation();
void emitInlineeLinesSubsection();
Index: llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
===================================================================
--- llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
+++ llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
@@ -73,6 +73,8 @@
#include "llvm/Support/Error.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FormatVariadic.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/Regex.h"
#include "llvm/Support/SMLoc.h"
#include "llvm/Support/ScopedPrinter.h"
#include "llvm/Target/TargetMachine.h"
@@ -455,6 +457,7 @@
switchToDebugSectionForSymbol(nullptr);
MCSymbol *CompilerInfo = beginCVSubsection(DebugSubsectionKind::Symbols);
+ emitObjName();
emitCompilerInformation();
endCVSubsection(CompilerInfo);
@@ -667,6 +670,54 @@
}
}
+static void unescapeSlashes(SmallVectorImpl<char> &Str) {
+ auto Read = Str.begin();
+ auto Write = Read;
+ while (Read != Str.end()) {
+ bool WasSlash = (*Read == '\\');
+ *Write++ = *Read++;
+ if (WasSlash && Read != Str.end() && *Read == '\\')
+ ++Read;
+ }
+ Str.resize(Write - Str.begin());
+}
+
+void CodeViewDebug::emitObjName() {
+ NamedMDNode *CUs = MMI->getModule()->getNamedMetadata("llvm.dbg.cu");
+ const MDNode *Node = *CUs->operands().begin();
+ const auto *CU = cast<DICompileUnit>(Node);
+
+ if (CU->getOutputFile().empty())
+ return;
+ MCContext &Context = MMI->getContext();
+ MCSymbol *ObjBegin = Context.createTempSymbol(),
+ *ObjEnd = Context.createTempSymbol();
+ OS.AddComment("Record length");
+ OS.emitAbsoluteSymbolDiff(ObjEnd, ObjBegin, 2);
+ OS.EmitLabel(ObjBegin);
+ OS.AddComment("Record kind: S_OBJNAME");
+ OS.EmitIntValue(SymbolKind::S_OBJNAME, 2);
+
+ SmallString<64> File;
+ if (llvm::sys::path::is_absolute(CU->getOutputFile())) {
+ File = CU->getOutputFile();
+ } else {
+ File = CU->getFile()->getDirectory();
+ llvm::sys::path::append(File, CU->getOutputFile());
+ }
+
+ unescapeSlashes(File);
+ assert(llvm::sys::path::is_absolute(File));
+
+ OS.AddComment("Signature");
+ OS.EmitIntValue(0, 4);
+
+ OS.AddComment("Object name");
+ emitNullTerminatedSymbolName(OS, File);
+
+ OS.EmitLabel(ObjEnd);
+}
+
void CodeViewDebug::emitCompilerInformation() {
MCContext &Context = MMI->getContext();
MCSymbol *CompilerBegin = Context.createTempSymbol(),
Index: llvm/lib/IR/AsmWriter.cpp
===================================================================
--- llvm/lib/IR/AsmWriter.cpp
+++ llvm/lib/IR/AsmWriter.cpp
@@ -1745,6 +1745,7 @@
Printer.printBool("debugInfoForProfiling", N->getDebugInfoForProfiling(),
false);
Printer.printBool("gnuPubnames", N->getGnuPubnames(), false);
+ Printer.printString("outputFile", N->getOutputFile(), false);
Out << ")";
}
Index: llvm/lib/IR/DIBuilder.cpp
===================================================================
--- llvm/lib/IR/DIBuilder.cpp
+++ llvm/lib/IR/DIBuilder.cpp
@@ -133,7 +133,8 @@
unsigned Lang, DIFile *File, StringRef Producer, bool isOptimized,
StringRef Flags, unsigned RunTimeVer, StringRef SplitName,
DICompileUnit::DebugEmissionKind Kind, uint64_t DWOId,
- bool SplitDebugInlining, bool DebugInfoForProfiling, bool GnuPubnames) {
+ bool SplitDebugInlining, bool DebugInfoForProfiling, bool GnuPubnames,
+ StringRef OutputFile) {
assert(((Lang <= dwarf::DW_LANG_Fortran08 && Lang >= dwarf::DW_LANG_C89) ||
(Lang <= dwarf::DW_LANG_hi_user && Lang >= dwarf::DW_LANG_lo_user)) &&
@@ -143,7 +144,7 @@
CUNode = DICompileUnit::getDistinct(
VMContext, Lang, File, Producer, isOptimized, Flags, RunTimeVer,
SplitName, Kind, nullptr, nullptr, nullptr, nullptr, nullptr, DWOId,
- SplitDebugInlining, DebugInfoForProfiling, GnuPubnames);
+ SplitDebugInlining, DebugInfoForProfiling, GnuPubnames, OutputFile);
// Create a named metadata so that it is easier to find cu in a module.
NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.cu");
Index: llvm/lib/IR/DebugInfo.cpp
===================================================================
--- llvm/lib/IR/DebugInfo.cpp
+++ llvm/lib/IR/DebugInfo.cpp
@@ -476,7 +476,8 @@
CU->getSplitDebugFilename(), DICompileUnit::LineTablesOnly, EnumTypes,
RetainedTypes, GlobalVariables, ImportedEntities, CU->getMacros(),
CU->getDWOId(), CU->getSplitDebugInlining(),
- CU->getDebugInfoForProfiling(), CU->getGnuPubnames());
+ CU->getDebugInfoForProfiling(), CU->getGnuPubnames(),
+ CU->getOutputFile());
}
DILocation *getReplacementMDLocation(DILocation *MLD) {
@@ -654,10 +655,10 @@
SmallVector<MDNode *, 8> Ops;
for (MDNode *Op : NMD.operands())
Ops.push_back(remap(Op));
-
+
if (!Changed)
continue;
-
+
NMD.clearOperands();
for (auto *Op : Ops)
if (Op)
@@ -730,12 +731,11 @@
auto File = unwrap<DIFile>(FileRef);
return wrap(unwrap(Builder)->createCompileUnit(
- map_from_llvmDWARFsourcelanguage(Lang), File,
- StringRef(Producer, ProducerLen), isOptimized,
- StringRef(Flags, FlagsLen), RuntimeVer,
- StringRef(SplitName, SplitNameLen),
- static_cast<DICompileUnit::DebugEmissionKind>(Kind), DWOId,
- SplitDebugInlining, DebugInfoForProfiling));
+ map_from_llvmDWARFsourcelanguage(Lang), File,
+ StringRef(Producer, ProducerLen), isOptimized, StringRef(Flags, FlagsLen),
+ RuntimeVer, StringRef(SplitName, SplitNameLen),
+ static_cast<DICompileUnit::DebugEmissionKind>(Kind), DWOId,
+ SplitDebugInlining, DebugInfoForProfiling, false, StringRef()));
}
LLVMMetadataRef
Index: llvm/lib/IR/DebugInfoMetadata.cpp
===================================================================
--- llvm/lib/IR/DebugInfoMetadata.cpp
+++ llvm/lib/IR/DebugInfoMetadata.cpp
@@ -431,16 +431,18 @@
unsigned EmissionKind, Metadata *EnumTypes, Metadata *RetainedTypes,
Metadata *GlobalVariables, Metadata *ImportedEntities, Metadata *Macros,
uint64_t DWOId, bool SplitDebugInlining, bool DebugInfoForProfiling,
- bool GnuPubnames, StorageType Storage, bool ShouldCreate) {
+ bool GnuPubnames, MDString *OutputFile, StorageType Storage,
+ bool ShouldCreate) {
assert(Storage != Uniqued && "Cannot unique DICompileUnit");
assert(isCanonical(Producer) && "Expected canonical MDString");
assert(isCanonical(Flags) && "Expected canonical MDString");
assert(isCanonical(SplitDebugFilename) && "Expected canonical MDString");
+ assert(isCanonical(OutputFile) && "Expected canonical MDString");
Metadata *Ops[] = {
File, Producer, Flags, SplitDebugFilename,
EnumTypes, RetainedTypes, GlobalVariables, ImportedEntities,
- Macros};
+ Macros, OutputFile};
return storeImpl(new (array_lengthof(Ops)) DICompileUnit(
Context, Storage, SourceLanguage, IsOptimized,
RuntimeVersion, EmissionKind, DWOId, SplitDebugInlining,
@@ -767,7 +769,7 @@
SmallVector<uint64_t, 8> Ops;
if (DerefBefore)
Ops.push_back(dwarf::DW_OP_deref);
-
+
appendOffset(Ops, Offset);
if (DerefAfter)
Ops.push_back(dwarf::DW_OP_deref);
Index: llvm/test/Assembler/cu-outputfile.ll
===================================================================
--- /dev/null
+++ llvm/test/Assembler/cu-outputfile.ll
@@ -0,0 +1,23 @@
+; RUN: llvm-as < %s | llvm-dis - | llvm-as - | llvm-dis - | FileCheck %s
+; RUN: verify-uselistorder < %s
+
+source_filename = "t.cpp"
+target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
+target triple = "i686-pc-windows-msvc19.12.25830"
+
+; Function Attrs: nounwind readnone speculatable
+declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
+
+attributes #0 = { noinline norecurse nounwind optnone }
+attributes #1 = { nounwind readnone speculatable }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!3, !4}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 7.0.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, outputFile: "t.cpp.obj")
+!1 = !DIFile(filename: "t.cpp", directory: "E:\5Csrc\5Cllvmbuild\5Cninja", checksumkind: CSK_MD5, checksum: "7a3b27accb97d16236331229590077a7")
+!2 = !{}
+!3 = !{i32 2, !"CodeView", i32 1}
+!4 = !{i32 2, !"Debug Info Version", i32 3}
+
+; CHECK: !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 7.0.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, outputFile: "t.cpp.obj")
Index: llvm/test/Bitcode/upgrade-cu-outputfile.ll
===================================================================
--- /dev/null
+++ llvm/test/Bitcode/upgrade-cu-outputfile.ll
@@ -0,0 +1,25 @@
+; Test upgrade of DICompileUnit to add empty outputFile
+;
+; RUN: llvm-dis < %s.bc | FileCheck %s
+; RUN: verify-uselistorder < %s.bc
+
+source_filename = "t.cpp"
+target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
+target triple = "i686-pc-windows-msvc19.12.25830"
+
+; Function Attrs: nounwind readnone speculatable
+declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
+
+attributes #0 = { noinline norecurse nounwind optnone }
+attributes #1 = { nounwind readnone speculatable }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!3, !4}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 7.0.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
+!1 = !DIFile(filename: "t.cpp", directory: "E:\5Csrc\5Cllvmbuild\5Cninja", checksumkind: CSK_MD5, checksum: "7a3b27accb97d16236331229590077a7")
+!2 = !{}
+!3 = !{i32 2, !"CodeView", i32 1}
+!4 = !{i32 2, !"Debug Info Version", i32 3}
+
+; CHECK: !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 7.0.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, outputFile: "")
Index: llvm/test/DebugInfo/COFF/buildinfo.ll
===================================================================
--- /dev/null
+++ llvm/test/DebugInfo/COFF/buildinfo.ll
@@ -0,0 +1,68 @@
+; RUN: llc -filetype=obj < %s > %t.obj
+; RUN: llvm-readobj -codeview %t.obj | FileCheck %s
+
+; CHECK: ObjNameSym {
+; CHECK-NEXT: Kind: S_OBJNAME (0x1101)
+; CHECK-NEXT: Signature: 0x0
+; CHECK-NEXT: ObjectName: E:{{/|\\}}src{{/|\\}}llvmbuild{{/|\\}}ninja{{/|\\}}t.cpp.obj
+; CHECK-NEXT: }
+; CHECK-NEXT: Compile3Sym {
+; CHECK-NEXT: Kind: S_COMPILE3 (0x113C)
+; CHECK-NEXT: Language: Cpp (0x1)
+; CHECK-NEXT: Flags [ (0x0)
+; CHECK-NEXT: ]
+; CHECK-NEXT: Machine: Pentium3 (0x7)
+; CHECK-NEXT: FrontendVersion: 7.0.0.0
+; CHECK-NEXT: BackendVersion: 7000.0.0.0
+; CHECK-NEXT: VersionName: clang version 7.0.0
+; CHECK-NEXT: }
+
+; ModuleID = 't.cpp'
+source_filename = "t.cpp"
+target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
+target triple = "i686-pc-windows-msvc19.12.25830"
+
+; Function Attrs: noinline norecurse nounwind optnone
+define i32 @main(i32 %argc, i8** %argv) #0 !dbg !8 {
+entry:
+ %retval = alloca i32, align 4
+ %argv.addr = alloca i8**, align 4
+ %argc.addr = alloca i32, align 4
+ store i32 0, i32* %retval, align 4
+ store i8** %argv, i8*** %argv.addr, align 4
+ call void @llvm.dbg.declare(metadata i8*** %argv.addr, metadata !15, metadata !DIExpression()), !dbg !16
+ store i32 %argc, i32* %argc.addr, align 4
+ call void @llvm.dbg.declare(metadata i32* %argc.addr, metadata !17, metadata !DIExpression()), !dbg !18
+ ret i32 0, !dbg !19
+}
+
+; Function Attrs: nounwind readnone speculatable
+declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
+
+attributes #0 = { noinline norecurse nounwind optnone }
+attributes #1 = { nounwind readnone speculatable }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!3, !4, !5, !6}
+!llvm.ident = !{!7}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 7.0.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, outputFile: "t.cpp.obj")
+!1 = !DIFile(filename: "t.cpp", directory: "E:\5Csrc\5Cllvmbuild\5Cninja", checksumkind: CSK_MD5, checksum: "7a3b27accb97d16236331229590077a7")
+!2 = !{}
+!3 = !{i32 1, !"NumRegisterParameters", i32 0}
+!4 = !{i32 2, !"CodeView", i32 1}
+!5 = !{i32 2, !"Debug Info Version", i32 3}
+!6 = !{i32 1, !"wchar_size", i32 2}
+!7 = !{!"clang version 7.0.0 "}
+!8 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
+!9 = !DISubroutineType(types: !10)
+!10 = !{!11, !11, !12}
+!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!12 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !13, size: 32)
+!13 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !14, size: 32)
+!14 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
+!15 = !DILocalVariable(name: "argv", arg: 2, scope: !8, file: !1, line: 1, type: !12)
+!16 = !DILocation(line: 1, column: 27, scope: !8)
+!17 = !DILocalVariable(name: "argc", arg: 1, scope: !8, file: !1, line: 1, type: !11)
+!18 = !DILocation(line: 1, column: 14, scope: !8)
+!19 = !DILocation(line: 2, column: 3, scope: !8)
\ No newline at end of file