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Extract source location info from DebugInfo.

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Add methods to add source location info in a DIE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61761 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2009-01-05 22:35:52 +00:00
parent 48d190f4d7
commit 8526cc03a5
2 changed files with 109 additions and 9 deletions
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36
include/llvm/Analysis/DebugInfo.h
View File

@ -48,10 +48,6 @@ namespace llvm {
/// not, the debug info is corrupt and we ignore it.
DIDescriptor(GlobalVariable *GV, unsigned RequiredTag);
unsigned getVersion() const {
return getUnsignedField(0) & VersionMask;
}
std::string getStringField(unsigned Elt) const;
unsigned getUnsignedField(unsigned Elt) const {
return (unsigned)getUInt64Field(Elt);
@ -74,6 +70,10 @@ namespace llvm {
GlobalVariable *getGV() const { return GV; }
unsigned getVersion() const {
return getUnsignedField(0) & VersionMask;
}
unsigned getTag() const {
return getUnsignedField(0) & ~VersionMask;
}
@ -147,6 +147,7 @@ namespace llvm {
public:
explicit DIType(GlobalVariable *GV);
explicit DIType() {}
virtual ~DIType() {}
DIDescriptor getContext() const { return getDescriptorField(1); }
std::string getName() const { return getStringField(2); }
@ -158,6 +159,16 @@ namespace llvm {
// carry this is just plain insane.
uint64_t getOffsetInBits() const { return getUInt64Field(7); }
unsigned getFlags() const { return getUnsignedField(8); }
virtual std::string getFilename() const {
assert (0 && "Invalid DIDescriptor");
return "";
}
virtual std::string getDirectory() const {
assert (0 && "Invalid DIDescriptor");
return "";
}
};
/// DIBasicType - A basic type, like 'int' or 'float'.
@ -166,7 +177,7 @@ namespace llvm {
explicit DIBasicType(GlobalVariable *GV);
unsigned getEncoding() const { return getUnsignedField(9); }
std::string getFileName() const { return getStringField(10); }
std::string getFilename() const { return getStringField(10); }
std::string getDirectory() const { return getStringField(11); }
};
@ -180,7 +191,7 @@ namespace llvm {
explicit DIDerivedType(GlobalVariable *GV);
DIType getTypeDerivedFrom() const { return getFieldAs<DIType>(9); }
std::string getFileName() const { return getStringField(10); }
std::string getFilename() const { return getStringField(10); }
std::string getDirectory() const { return getStringField(11); }
/// isDerivedType - Return true if the specified tag is legal for
@ -202,7 +213,7 @@ namespace llvm {
explicit DICompositeType(GlobalVariable *GV);
DIArray getTypeArray() const { return getFieldAs<DIArray>(10); }
std::string getFileName() const { return getStringField(11); }
std::string getFilename() const { return getStringField(11); }
std::string getDirectory() const { return getStringField(12); }
/// isCompositeType - Return true if the specified tag is legal for
@ -220,6 +231,7 @@ namespace llvm {
explicit DIGlobal(GlobalVariable *GV, unsigned RequiredTag)
: DIDescriptor(GV, RequiredTag) {}
public:
virtual ~DIGlobal() {}
DIDescriptor getContext() const { return getDescriptorField(2); }
std::string getName() const { return getStringField(3); }
@ -234,6 +246,16 @@ namespace llvm {
/// compile unit, like 'static' in C.
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 "";
}
};

78
lib/CodeGen/AsmPrinter/DwarfWriter.cpp
View File

@ -1123,6 +1123,33 @@ public:
};
//===----------------------------------------------------------------------===//
/// SrcFileInfo - This class is used to track source information.
///
class SrcFileInfo {
unsigned DirectoryID; // Directory ID number.
std::string Name; // File name (not including directory.)
public:
SrcFileInfo(unsigned D, const std::string &N) : DirectoryID(D), Name(N) {}
// Accessors
unsigned getDirectoryID() const { return DirectoryID; }
const std::string &getName() const { return Name; }
/// operator== - Used by UniqueVector to locate entry.
///
bool operator==(const SourceFileInfo &SI) const {
return getDirectoryID() == SI.getDirectoryID() && getName() == SI.getName();
}
/// operator< - Used by UniqueVector to locate entry.
///
bool operator<(const SrcFileInfo &SI) const {
return getDirectoryID() < SI.getDirectoryID() ||
(getDirectoryID() == SI.getDirectoryID() && getName() < SI.getName());
}
};
//===----------------------------------------------------------------------===//
/// DwarfDebug - Emits Dwarf debug directives.
///
@ -1136,6 +1163,7 @@ private:
/// CompileUnits - All the compile units involved in this build. The index
/// of each entry in this vector corresponds to the sources in MMI.
std::vector<CompileUnit *> CompileUnits;
DenseMap<GlobalVariable *, CompileUnit *> DW_CUs;
/// AbbreviationsSet - Used to uniquely define abbreviations.
///
@ -1147,6 +1175,12 @@ private:
/// ValuesSet - Used to uniquely define values.
///
// Directories - Uniquing vector for directories.
UniqueVector<std::string> Directories;
// SourceFiles - Uniquing vector for source files.
UniqueVector<SrcFileInfo> SrcFiles;
FoldingSet<DIEValue> ValuesSet;
/// Values - A list of all the unique values in use.
@ -1416,6 +1450,42 @@ private:
}
}
/// AddSourceLine - Add location information to specified debug information
/// entry.
void AddSourceLine(DIE *Die, DIGlobal *G) {
unsigned FileID = 0;
unsigned Line = G->getLineNumber();
if (G->getVersion() < DIDescriptor::Version7) {
// 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()));
}
AddUInt(Die, DW_AT_decl_file, 0, FileID);
AddUInt(Die, DW_AT_decl_line, 0, Line);
}
void AddSourceLine(DIE *Die, DIType *G) {
unsigned FileID = 0;
unsigned Line = G->getLineNumber();
if (G->getVersion() < DIDescriptor::Version7) {
// 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()));
}
AddUInt(Die, DW_AT_decl_file, 0, FileID);
AddUInt(Die, DW_AT_decl_line, 0, Line);
}
/// AddAddress - Add an address attribute to a die based on the location
/// provided.
void AddAddress(DIE *Die, unsigned Attribute,
@ -2144,6 +2214,14 @@ private:
return Unit;
}
/// FindCompileUnit - Get the compile unit for the given descriptor.
///
CompileUnit *FindCompileUnit(DICompileUnit Unit) {
CompileUnit *DW_Unit = DW_CUs[Unit.getGV()];
assert(DW_Unit && "Missing compile unit.");
return DW_Unit;
}
/// NewGlobalVariable - Add a new global variable DIE.
///
DIE *NewGlobalVariable(GlobalVariableDesc *GVD) {