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-rw-r--r--docs/SourceLevelDebugging.html9
-rw-r--r--include/llvm/Analysis/DebugInfo.h75
-rw-r--r--lib/Analysis/DebugInfo.cpp52
-rw-r--r--lib/CodeGen/AsmPrinter/DwarfWriter.cpp80
-rw-r--r--test/DebugInfo/2009-01-29-HeaderLocation.ll46
5 files changed, 134 insertions, 128 deletions
diff --git a/docs/SourceLevelDebugging.html b/docs/SourceLevelDebugging.html
index 4a55a1c1a2..263f40c6eb 100644
--- a/docs/SourceLevelDebugging.html
+++ b/docs/SourceLevelDebugging.html
@@ -378,6 +378,7 @@ deleted.</p>
sbyte*, ;; Source file name
sbyte*, ;; Source file directory (includes trailing slash)
sbyte* ;; Producer (ex. "4.0.1 LLVM (LLVM research group)")
+ bool ;; True if this is a main compile unit.
}
</pre>
@@ -392,6 +393,14 @@ specific source file. Global variables and top level functions would be defined
using this context. Compile unit descriptors also provide context for source
line correspondence.</p>
+<p> Each input file is encoded as a separate compile unit in LLVM debugging
+information output. However, many target specific tool chains prefer to encode
+only one compile unit in an object file. In this situation, the LLVM code
+generator will include debugging information entities in the compile unit
+that is marked as main compile unit. The code generator accepts maximum one main
+compile unit per module. If a module does not contain any main compile unit
+then the code generator will emit multiple compile units in the output object
+file.
</div>
<!-- ======================================================================= -->
diff --git a/include/llvm/Analysis/DebugInfo.h b/include/llvm/Analysis/DebugInfo.h
index 310c1acf08..5113d5f773 100644
--- a/include/llvm/Analysis/DebugInfo.h
+++ b/include/llvm/Analysis/DebugInfo.h
@@ -109,8 +109,18 @@ namespace llvm {
std::string getFilename() const { return getStringField(3); }
std::string getDirectory() const { return getStringField(4); }
std::string getProducer() const { return getStringField(5); }
- bool isOptimized() const { return getUnsignedField(6); }
- std::string getFlags() const { return getStringField(7); }
+
+ /// isMain - Each input file is encoded as a separate compile unit in LLVM
+ /// debugging information output. However, many target specific tool chains
+ /// prefer to encode only one compile unit in an object file. In this
+ /// situation, the LLVM code generator will include debugging information
+ /// entities in the compile unit that is marked as main compile unit. The
+ /// code generator accepts maximum one main compile unit per module. If a
+ /// module does not contain any main compile unit then the code generator
+ /// will emit multiple compile units in the output object file.
+ bool isMain() const { return getUnsignedField(6); }
+ bool isOptimized() const { return getUnsignedField(7); }
+ std::string getFlags() const { return getStringField(8); }
/// Verify - Verify that a compile unit is well formed.
bool Verify() const;
@@ -183,16 +193,6 @@ namespace llvm {
bool isProtected() const { return (getFlags() & FlagProtected) != 0; }
bool isForwardDecl() const { return (getFlags() & FlagFwdDecl) != 0; }
- virtual std::string getFilename() const {
- assert (0 && "Invalid DIDescriptor");
- return "";
- }
-
- virtual std::string getDirectory() const {
- assert (0 && "Invalid DIDescriptor");
- return "";
- }
-
/// dump - print type.
void dump() const;
};
@@ -201,10 +201,7 @@ namespace llvm {
class DIBasicType : public DIType {
public:
explicit DIBasicType(GlobalVariable *GV);
-
unsigned getEncoding() const { return getUnsignedField(9); }
- std::string getFilename() const { return getStringField(10); }
- std::string getDirectory() const { return getStringField(11); }
/// dump - print basic type.
void dump() const;
@@ -218,10 +215,7 @@ namespace llvm {
: DIType(GV, true, true) {}
public:
explicit DIDerivedType(GlobalVariable *GV);
-
DIType getTypeDerivedFrom() const { return getFieldAs<DIType>(9); }
- std::string getFilename() const { return getStringField(10); }
- std::string getDirectory() const { return getStringField(11); }
/// dump - print derived type.
void dump() const;
@@ -233,10 +227,7 @@ namespace llvm {
class DICompositeType : public DIDerivedType {
public:
explicit DICompositeType(GlobalVariable *GV);
-
DIArray getTypeArray() const { return getFieldAs<DIArray>(10); }
- std::string getFilename() const { return getStringField(11); }
- std::string getDirectory() const { return getStringField(12); }
/// Verify - Verify that a composite type descriptor is well formed.
bool Verify() const;
@@ -279,16 +270,6 @@ namespace llvm {
unsigned isLocalToUnit() const { return getUnsignedField(9); }
unsigned isDefinition() const { return getUnsignedField(10); }
- virtual std::string getFilename() const {
- assert (0 && "Invalid DIDescriptor");
- return "";
- }
-
- virtual std::string getDirectory() const {
- assert (0 && "Invalid DIDescriptor");
- return "";
- }
-
/// dump - print global.
void dump() const;
};
@@ -297,8 +278,6 @@ namespace llvm {
class DISubprogram : public DIGlobal {
public:
explicit DISubprogram(GlobalVariable *GV = 0);
- std::string getFilename() const { return getStringField(11); }
- std::string getDirectory() const { return getStringField(12); }
DICompositeType getType() const { return getFieldAs<DICompositeType>(8); }
/// Verify - Verify that a subprogram descriptor is well formed.
@@ -312,10 +291,7 @@ namespace llvm {
class DIGlobalVariable : public DIGlobal {
public:
explicit DIGlobalVariable(GlobalVariable *GV = 0);
-
GlobalVariable *getGlobal() const { return getGlobalVariableField(11); }
- std::string getFilename() const { return getStringField(12); }
- std::string getDirectory() const { return getStringField(13); }
/// Verify - Verify that a global variable descriptor is well formed.
bool Verify() const;
@@ -335,8 +311,6 @@ namespace llvm {
DICompileUnit getCompileUnit() const{ return getFieldAs<DICompileUnit>(3); }
unsigned getLineNumber() const { return getUnsignedField(4); }
DIType getType() const { return getFieldAs<DIType>(5); }
- std::string getFilename() const { return getStringField(6); }
- std::string getDirectory() const { return getStringField(7); }
/// isVariable - Return true if the specified tag is legal for DIVariable.
static bool isVariable(unsigned Tag);
@@ -402,6 +376,7 @@ namespace llvm {
const std::string &Filename,
const std::string &Directory,
const std::string &Producer,
+ bool isMain = false,
bool isOptimized = false,
const char *Flags = "");
@@ -413,9 +388,7 @@ namespace llvm {
DICompileUnit CompileUnit, unsigned LineNumber,
uint64_t SizeInBits, uint64_t AlignInBits,
uint64_t OffsetInBits, unsigned Flags,
- unsigned Encoding,
- const std::string *FileName = 0,
- const std::string *Directory = 0);
+ unsigned Encoding);
/// CreateDerivedType - Create a derived type like const qualified type,
/// pointer, typedef, etc.
@@ -425,9 +398,7 @@ namespace llvm {
unsigned LineNumber,
uint64_t SizeInBits, uint64_t AlignInBits,
uint64_t OffsetInBits, unsigned Flags,
- DIType DerivedFrom,
- const std::string *FileName = 0,
- const std::string *Directory = 0);
+ DIType DerivedFrom);
/// CreateCompositeType - Create a composite type like array, struct, etc.
DICompositeType CreateCompositeType(unsigned Tag, DIDescriptor Context,
@@ -438,9 +409,7 @@ namespace llvm {
uint64_t AlignInBits,
uint64_t OffsetInBits, unsigned Flags,
DIType DerivedFrom,
- DIArray Elements,
- const std::string *FileName = 0,
- const std::string *Directory = 0);
+ DIArray Elements);
/// CreateSubprogram - Create a new descriptor for the specified subprogram.
/// See comments in DISubprogram for descriptions of these fields.
@@ -449,9 +418,7 @@ namespace llvm {
const std::string &LinkageName,
DICompileUnit CompileUnit, unsigned LineNo,
DIType Type, bool isLocalToUnit,
- bool isDefinition,
- const std::string *FileName = 0,
- const std::string *Directory = 0);
+ bool isDefinition);
/// CreateGlobalVariable - Create a new descriptor for the specified global.
DIGlobalVariable
@@ -460,17 +427,13 @@ namespace llvm {
const std::string &LinkageName,
DICompileUnit CompileUnit,
unsigned LineNo, DIType Type, bool isLocalToUnit,
- bool isDefinition, llvm::GlobalVariable *GV,
- const std::string *FileName = 0,
- const std::string *Directory = 0);
+ bool isDefinition, llvm::GlobalVariable *GV);
/// CreateVariable - Create a new descriptor for the specified variable.
DIVariable CreateVariable(unsigned Tag, DIDescriptor Context,
const std::string &Name,
DICompileUnit CompileUnit, unsigned LineNo,
- DIType Type,
- const std::string *FileName = 0,
- const std::string *Directory = 0);
+ DIType Type);
/// CreateBlock - This creates a descriptor for a lexical block with the
/// specified parent context.
diff --git a/lib/Analysis/DebugInfo.cpp b/lib/Analysis/DebugInfo.cpp
index e5bbbd5aab..0ec80894f1 100644
--- a/lib/Analysis/DebugInfo.cpp
+++ b/lib/Analysis/DebugInfo.cpp
@@ -442,6 +442,7 @@ DICompileUnit DIFactory::CreateCompileUnit(unsigned LangID,
const std::string &Filename,
const std::string &Directory,
const std::string &Producer,
+ bool isMain,
bool isOptimized,
const char *Flags) {
Constant *Elts[] = {
@@ -451,6 +452,7 @@ DICompileUnit DIFactory::CreateCompileUnit(unsigned LangID,
GetStringConstant(Filename),
GetStringConstant(Directory),
GetStringConstant(Producer),
+ ConstantInt::get(Type::Int1Ty, isMain),
ConstantInt::get(Type::Int1Ty, isOptimized),
GetStringConstant(Flags)
};
@@ -492,9 +494,7 @@ DIBasicType DIFactory::CreateBasicType(DIDescriptor Context,
uint64_t SizeInBits,
uint64_t AlignInBits,
uint64_t OffsetInBits, unsigned Flags,
- unsigned Encoding,
- const std::string *FileName,
- const std::string *Directory) {
+ unsigned Encoding) {
Constant *Elts[] = {
GetTagConstant(dwarf::DW_TAG_base_type),
getCastToEmpty(Context),
@@ -505,9 +505,7 @@ DIBasicType DIFactory::CreateBasicType(DIDescriptor Context,
ConstantInt::get(Type::Int64Ty, AlignInBits),
ConstantInt::get(Type::Int64Ty, OffsetInBits),
ConstantInt::get(Type::Int32Ty, Flags),
- ConstantInt::get(Type::Int32Ty, Encoding),
- GetStringConstant(FileName ? FileName->c_str() : ""),
- GetStringConstant(Directory ? Directory->c_str() : "")
+ ConstantInt::get(Type::Int32Ty, Encoding)
};
Constant *Init = ConstantStruct::get(Elts, sizeof(Elts)/sizeof(Elts[0]));
@@ -531,9 +529,7 @@ DIDerivedType DIFactory::CreateDerivedType(unsigned Tag,
uint64_t AlignInBits,
uint64_t OffsetInBits,
unsigned Flags,
- DIType DerivedFrom,
- const std::string *FileName,
- const std::string *Directory) {
+ DIType DerivedFrom) {
Constant *Elts[] = {
GetTagConstant(Tag),
getCastToEmpty(Context),
@@ -544,9 +540,7 @@ DIDerivedType DIFactory::CreateDerivedType(unsigned Tag,
ConstantInt::get(Type::Int64Ty, AlignInBits),
ConstantInt::get(Type::Int64Ty, OffsetInBits),
ConstantInt::get(Type::Int32Ty, Flags),
- getCastToEmpty(DerivedFrom),
- GetStringConstant(FileName ? FileName->c_str() : ""),
- GetStringConstant(Directory ? Directory->c_str() : "")
+ getCastToEmpty(DerivedFrom)
};
Constant *Init = ConstantStruct::get(Elts, sizeof(Elts)/sizeof(Elts[0]));
@@ -570,9 +564,7 @@ DICompositeType DIFactory::CreateCompositeType(unsigned Tag,
uint64_t OffsetInBits,
unsigned Flags,
DIType DerivedFrom,
- DIArray Elements,
- const std::string *FileName,
- const std::string *Directory) {
+ DIArray Elements) {
Constant *Elts[] = {
GetTagConstant(Tag),
@@ -585,9 +577,7 @@ DICompositeType DIFactory::CreateCompositeType(unsigned Tag,
ConstantInt::get(Type::Int64Ty, OffsetInBits),
ConstantInt::get(Type::Int32Ty, Flags),
getCastToEmpty(DerivedFrom),
- getCastToEmpty(Elements),
- GetStringConstant(FileName ? FileName->c_str() : ""),
- GetStringConstant(Directory ? Directory->c_str() : "")
+ getCastToEmpty(Elements)
};
Constant *Init = ConstantStruct::get(Elts, sizeof(Elts)/sizeof(Elts[0]));
@@ -611,9 +601,7 @@ DISubprogram DIFactory::CreateSubprogram(DIDescriptor Context,
DICompileUnit CompileUnit,
unsigned LineNo, DIType Type,
bool isLocalToUnit,
- bool isDefinition,
- const std::string *FileName,
- const std::string *Directory) {
+ bool isDefinition) {
Constant *Elts[] = {
GetTagConstant(dwarf::DW_TAG_subprogram),
@@ -626,9 +614,7 @@ DISubprogram DIFactory::CreateSubprogram(DIDescriptor Context,
ConstantInt::get(Type::Int32Ty, LineNo),
getCastToEmpty(Type),
ConstantInt::get(Type::Int1Ty, isLocalToUnit),
- ConstantInt::get(Type::Int1Ty, isDefinition),
- GetStringConstant(FileName ? FileName->c_str() : ""),
- GetStringConstant(Directory ? Directory->c_str() : "")
+ ConstantInt::get(Type::Int1Ty, isDefinition)
};
Constant *Init = ConstantStruct::get(Elts, sizeof(Elts)/sizeof(Elts[0]));
@@ -648,9 +634,7 @@ DIFactory::CreateGlobalVariable(DIDescriptor Context, const std::string &Name,
const std::string &LinkageName,
DICompileUnit CompileUnit,
unsigned LineNo, DIType Type,bool isLocalToUnit,
- bool isDefinition, llvm::GlobalVariable *Val,
- const std::string *FileName,
- const std::string *Directory) {
+ bool isDefinition, llvm::GlobalVariable *Val) {
Constant *Elts[] = {
GetTagConstant(dwarf::DW_TAG_variable),
getCastToEmpty(GetOrCreateGlobalVariableAnchor()),
@@ -663,9 +647,7 @@ DIFactory::CreateGlobalVariable(DIDescriptor Context, const std::string &Name,
getCastToEmpty(Type),
ConstantInt::get(Type::Int1Ty, isLocalToUnit),
ConstantInt::get(Type::Int1Ty, isDefinition),
- ConstantExpr::getBitCast(Val, EmptyStructPtr),
- GetStringConstant(FileName ? FileName->c_str() : ""),
- GetStringConstant(Directory ? Directory->c_str() : "")
+ ConstantExpr::getBitCast(Val, EmptyStructPtr)
};
Constant *Init = ConstantStruct::get(Elts, sizeof(Elts)/sizeof(Elts[0]));
@@ -683,20 +665,14 @@ DIFactory::CreateGlobalVariable(DIDescriptor Context, const std::string &Name,
DIVariable DIFactory::CreateVariable(unsigned Tag, DIDescriptor Context,
const std::string &Name,
DICompileUnit CompileUnit, unsigned LineNo,
- DIType Type,
- const std::string *FileName,
- const std::string *Directory) {
-
-
+ DIType Type) {
Constant *Elts[] = {
GetTagConstant(Tag),
getCastToEmpty(Context),
GetStringConstant(Name),
getCastToEmpty(CompileUnit),
ConstantInt::get(Type::Int32Ty, LineNo),
- getCastToEmpty(Type),
- GetStringConstant(FileName ? FileName->c_str() : ""),
- GetStringConstant(Directory ? Directory->c_str() : "")
+ getCastToEmpty(Type)
};
Constant *Init = ConstantStruct::get(Elts, sizeof(Elts)/sizeof(Elts[0]));
diff --git a/lib/CodeGen/AsmPrinter/DwarfWriter.cpp b/lib/CodeGen/AsmPrinter/DwarfWriter.cpp
index b2a52cabe0..95990cfe67 100644
--- a/lib/CodeGen/AsmPrinter/DwarfWriter.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfWriter.cpp
@@ -1274,6 +1274,9 @@ private:
/// of each entry in this vector corresponds to the sources in MMI.
DenseMap<Value *, CompileUnit *> DW_CUs;
+ /// MainCU - Some platform prefers one compile unit per .o file. In such
+ /// cases, all dies are inserted in MainCU.
+ CompileUnit *MainCU;
/// AbbreviationsSet - Used to uniquely define abbreviations.
///
FoldingSet<DIEAbbrev> AbbreviationsSet;
@@ -1559,16 +1562,8 @@ private:
void AddSourceLine(DIE *Die, const DIVariable *V) {
unsigned FileID = 0;
unsigned Line = V->getLineNumber();
- if (V->getVersion() <= LLVMDebugVersion6) {
- // Version6 or earlier. Use compile unit info to get file id.
- CompileUnit *Unit = FindCompileUnit(V->getCompileUnit());
- FileID = Unit->getID();
- } else {
- // Version7 or newer, use filename and directory info from DIVariable
- // directly.
- unsigned DID = Directories.idFor(V->getDirectory());
- FileID = SrcFiles.idFor(SrcFileInfo(DID, V->getFilename()));
- }
+ CompileUnit *Unit = FindCompileUnit(V->getCompileUnit());
+ FileID = Unit->getID();
AddUInt(Die, DW_AT_decl_file, 0, FileID);
AddUInt(Die, DW_AT_decl_line, 0, Line);
}
@@ -1578,16 +1573,8 @@ private:
void AddSourceLine(DIE *Die, const DIGlobal *G) {
unsigned FileID = 0;
unsigned Line = G->getLineNumber();
- if (G->getVersion() <= LLVMDebugVersion6) {
- // Version6 or earlier. Use compile unit info to get file id.
- CompileUnit *Unit = FindCompileUnit(G->getCompileUnit());
- FileID = Unit->getID();
- } else {
- // Version7 or newer, use filename and directory info from DIGlobal
- // directly.
- unsigned DID = Directories.idFor(G->getDirectory());
- FileID = SrcFiles.idFor(SrcFileInfo(DID, G->getFilename()));
- }
+ CompileUnit *Unit = FindCompileUnit(G->getCompileUnit());
+ FileID = Unit->getID();
AddUInt(Die, DW_AT_decl_file, 0, FileID);
AddUInt(Die, DW_AT_decl_line, 0, Line);
}
@@ -1595,16 +1582,11 @@ private:
void AddSourceLine(DIE *Die, const DIType *Ty) {
unsigned FileID = 0;
unsigned Line = Ty->getLineNumber();
- if (Ty->getVersion() <= LLVMDebugVersion6) {
- // Version6 or earlier. Use compile unit info to get file id.
- CompileUnit *Unit = FindCompileUnit(Ty->getCompileUnit());
- FileID = Unit->getID();
- } else {
- // Version7 or newer, use filename and directory info from DIType
- // directly.
- unsigned DID = Directories.idFor(Ty->getDirectory());
- FileID = SrcFiles.idFor(SrcFileInfo(DID, Ty->getFilename()));
- }
+ DICompileUnit CU = Ty->getCompileUnit();
+ if (CU.isNull())
+ return;
+ CompileUnit *Unit = FindCompileUnit(CU);
+ FileID = Unit->getID();
AddUInt(Die, DW_AT_decl_file, 0, FileID);
AddUInt(Die, DW_AT_decl_line, 0, Line);
}
@@ -2091,7 +2073,9 @@ private:
DISubprogram SPD(Desc.getGV());
// Get the compile unit context.
- CompileUnit *Unit = FindCompileUnit(SPD.getCompileUnit());
+ CompileUnit *Unit = MainCU;
+ if (!Unit)
+ Unit = FindCompileUnit(SPD.getCompileUnit());
// Get the subprogram die.
DIE *SPDie = Unit->getDieMapSlotFor(SPD.getGV());
@@ -2122,7 +2106,9 @@ private:
if (SPD.getName() == MF->getFunction()->getName()) {
// Get the compile unit context.
- CompileUnit *Unit = FindCompileUnit(SPD.getCompileUnit());
+ CompileUnit *Unit = MainCU;
+ if (!Unit)
+ Unit = FindCompileUnit(SPD.getCompileUnit());
// Get the subprogram die.
DIE *SPDie = Unit->getDieMapSlotFor(SPD.getGV());
@@ -2294,6 +2280,15 @@ private:
///
void SizeAndOffsets() {
// Process base compile unit.
+ if (MainCU) {
+ // Compute size of compile unit header
+ unsigned Offset = sizeof(int32_t) + // Length of Compilation Unit Info
+ sizeof(int16_t) + // DWARF version number
+ sizeof(int32_t) + // Offset Into Abbrev. Section
+ sizeof(int8_t); // Pointer Size (in bytes)
+ SizeAndOffsetDie(MainCU->getDie(), Offset, true);
+ return;
+ }
for (DenseMap<Value *, CompileUnit *>::iterator CI = DW_CUs.begin(),
CE = DW_CUs.end(); CI != CE; ++CI) {
CompileUnit *Unit = CI->second;
@@ -2315,6 +2310,8 @@ private:
for (DenseMap<Value *, CompileUnit *>::iterator CI = DW_CUs.begin(),
CE = DW_CUs.end(); CI != CE; ++CI) {
CompileUnit *Unit = CI->second;
+ if (MainCU)
+ Unit = MainCU;
DIE *Die = Unit->getDie();
// Emit the compile units header.
EmitLabel("info_begin", Unit->getID());
@@ -2340,6 +2337,8 @@ private:
EmitLabel("info_end", Unit->getID());
Asm->EOL();
+ if (MainCU)
+ return;
}
}
@@ -2639,6 +2638,8 @@ private:
for (DenseMap<Value *, CompileUnit *>::iterator CI = DW_CUs.begin(),
CE = DW_CUs.end(); CI != CE; ++CI) {
CompileUnit *Unit = CI->second;
+ if (MainCU)
+ Unit = MainCU;
EmitDifference("pubnames_end", Unit->getID(),
"pubnames_begin", Unit->getID(), true);
@@ -2672,6 +2673,8 @@ private:
EmitLabel("pubnames_end", Unit->getID());
Asm->EOL();
+ if (MainCU)
+ return;
}
}
@@ -2789,6 +2792,10 @@ private:
AddString(Die, DW_AT_APPLE_flags, DW_FORM_string, Flags);
CompileUnit *Unit = new CompileUnit(ID, Die);
+ if (DIUnit.isMain()) {
+ assert (!MainCU && "Multiple main compile units are found!");
+ MainCU = Unit;
+ }
DW_CUs[DIUnit.getGV()] = Unit;
}
}
@@ -2802,7 +2809,9 @@ private:
for (std::vector<GlobalVariable *>::iterator GVI = Result.begin(),
GVE = Result.end(); GVI != GVE; ++GVI) {
DIGlobalVariable DI_GV(*GVI);
- CompileUnit *DW_Unit = FindCompileUnit(DI_GV.getCompileUnit());
+ CompileUnit *DW_Unit = MainCU;
+ if (!DW_Unit)
+ DW_Unit = FindCompileUnit(DI_GV.getCompileUnit());
// Check for pre-existence.
DIE *&Slot = DW_Unit->getDieMapSlotFor(DI_GV.getGV());
@@ -2839,7 +2848,9 @@ private:
RE = Result.end(); RI != RE; ++RI) {
DISubprogram SP(*RI);
- CompileUnit *Unit = FindCompileUnit(SP.getCompileUnit());
+ CompileUnit *Unit = MainCU;
+ if (!Unit)
+ Unit = FindCompileUnit(SP.getCompileUnit());
// Check for pre-existence.
DIE *&Slot = Unit->getDieMapSlotFor(SP.getGV());
@@ -2862,6 +2873,7 @@ public:
//
DwarfDebug(raw_ostream &OS, AsmPrinter *A, const TargetAsmInfo *T)
: Dwarf(OS, A, T, "dbg")
+ , MainCU(NULL)
, AbbreviationsSet(InitAbbreviationsSetSize)
, Abbreviations()
, ValuesSet(InitValuesSetSize)
diff --git a/test/DebugInfo/2009-01-29-HeaderLocation.ll b/test/DebugInfo/2009-01-29-HeaderLocation.ll
new file mode 100644
index 0000000000..c59a1c730c
--- /dev/null
+++ b/test/DebugInfo/2009-01-29-HeaderLocation.ll
@@ -0,0 +1,46 @@
+; RUN: llvm-as < %s | llc | grep "m.h" | count 1
+target triple = "i386-apple-darwin9.6"
+ %llvm.dbg.anchor.type = type { i32, i32 }
+ %llvm.dbg.basictype.type = type { i32, { }*, i8*, { }*, i32, i64, i64, i64, i32, i32 }
+ %llvm.dbg.compile_unit.type = type { i32, { }*, i32, i8*, i8*, i8*, i1, i1, i8* }
+ %llvm.dbg.composite.type = type { i32, { }*, i8*, { }*, i32, i64, i64, i64, i32, { }*, { }* }
+ %llvm.dbg.subprogram.type = type { i32, { }*, { }*, i8*, i8*, i8*, { }*, i32, { }*, i1, i1 }
+@llvm.dbg.compile_units = linkonce constant %llvm.dbg.anchor.type { i32 458752, i32 17 }, section "llvm.metadata" ; <%llvm.dbg.anchor.type*> [#uses=1]
+@.str = internal constant [4 x i8] c"m.c\00", section "llvm.metadata" ; <[4 x i8]*> [#uses=1]
+@.str1 = internal constant [26 x i8] c"/Volumes/Nanpura/dbg.test\00", section "llvm.metadata" ; <[26 x i8]*> [#uses=1]
+@.str2 = internal constant [52 x i8] c"4.2.1 (Based on Apple Inc. build 5636) (LLVM build)\00", section "llvm.metadata" ; <[52 x i8]*> [#uses=1]
+@llvm.dbg.compile_unit = internal constant %llvm.dbg.compile_unit.type { i32 458769, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.compile_units to { }*), i32 1, i8* getelementptr ([4 x i8]* @.str, i32 0, i32 0), i8* getelementptr ([26 x i8]* @.str1, i32 0, i32 0), i8* getelementptr ([52 x i8]* @.str2, i32 0, i32 0), i1 true, i1 false, i8* null }, section "llvm.metadata" ; <%llvm.dbg.compile_unit.type*> [#uses=1]
+@.str3 = internal constant [4 x i8] c"int\00", section "llvm.metadata" ; <[4 x i8]*> [#uses=1]
+@llvm.dbg.basictype = internal constant %llvm.dbg.basictype.type { i32 458788, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i8* getelementptr ([4 x i8]* @.str3, i32 0, i32 0), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 0, i64 32, i64 32, i64 0, i32 0, i32 5 }, section "llvm.metadata" ; <%llvm.dbg.basictype.type*> [#uses=1]
+@llvm.dbg.array = internal constant [1 x { }*] [ { }* bitcast (%llvm.dbg.basictype.type* @llvm.dbg.basictype to { }*) ], section "llvm.metadata" ; <[1 x { }*]*> [#uses=1]
+@llvm.dbg.composite = internal constant %llvm.dbg.composite.type { i32 458773, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i8* null, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i32 0, i64 0, i64 0, i64 0, i32 0, { }* null, { }* bitcast ([1 x { }*]* @llvm.dbg.array to { }*) }, section "llvm.metadata" ; <%llvm.dbg.composite.type*> [#uses=1]
+@.str4 = internal constant [4 x i8] c"m.h\00", section "llvm.metadata" ; <[4 x i8]*> [#uses=1]
+@llvm.dbg.compile_unit5 = internal constant %llvm.dbg.compile_unit.type { i32 458769, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.compile_units to { }*), i32 1, i8* getelementptr ([4 x i8]* @.str4, i32 0, i32 0), i8* getelementptr ([26 x i8]* @.str1, i32 0, i32 0), i8* getelementptr ([52 x i8]* @.str2, i32 0, i32 0), i1 false, i1 false, i8* null }, section "llvm.metadata" ; <%llvm.dbg.compile_unit.type*> [#uses=1]
+@llvm.dbg.subprograms = linkonce constant %llvm.dbg.anchor.type { i32 458752, i32 46 }, section "llvm.metadata" ; <%llvm.dbg.anchor.type*> [#uses=1]
+@.str6 = internal constant [5 x i8] c"main\00", section "llvm.metadata" ; <[5 x i8]*> [#uses=1]
+@llvm.dbg.subprogram = internal constant %llvm.dbg.subprogram.type { i32 458798, { }* bitcast (%llvm.dbg.anchor.type* @llvm.dbg.subprograms to { }*), { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit to { }*), i8* getelementptr ([5 x i8]* @.str6, i32 0, i32 0), i8* getelementptr ([5 x i8]* @.str6, i32 0, i32 0), i8* null, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit5 to { }*), i32 2, { }* bitcast (%llvm.dbg.composite.type* @llvm.dbg.composite to { }*), i1 false, i1 true }, section "llvm.metadata" ; <%llvm.dbg.subprogram.type*> [#uses=1]
+
+define i32 @main() nounwind {
+entry:
+ %retval = alloca i32 ; <i32*> [#uses=2]
+ %0 = alloca i32 ; <i32*> [#uses=2]
+ %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
+ call void @llvm.dbg.func.start({ }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram to { }*))
+ call void @llvm.dbg.stoppoint(i32 2, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit5 to { }*))
+ store i32 0, i32* %0, align 4
+ %1 = load i32* %0, align 4 ; <i32> [#uses=1]
+ store i32 %1, i32* %retval, align 4
+ br label %return
+
+return: ; preds = %entry
+ %retval1 = load i32* %retval ; <i32> [#uses=1]
+ call void @llvm.dbg.stoppoint(i32 2, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit5 to { }*))
+ call void @llvm.dbg.region.end({ }* bitcast (%llvm.dbg.subprogram.type* @llvm.dbg.subprogram to { }*))
+ ret i32 %retval1
+}
+
+declare void @llvm.dbg.func.start({ }*) nounwind
+
+declare void @llvm.dbg.stoppoint(i32, i32, { }*) nounwind
+
+declare void @llvm.dbg.region.end({ }*) nounwind
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-06-26 16:49:49 +0000