//===----------------------------------------------------------------------===//
//
// This file defines a bunch of datatypes that are useful for creating and
-// walking debug info in LLVM IR form.
+// walking debug info in LLVM IR form. They essentially provide wrappers around
+// the information in the global variables that's needed when constructing the
+// DWARF information.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_ANALYSIS_DEBUGINFO_H
#define LLVM_ANALYSIS_DEBUGINFO_H
+#include "llvm/Target/TargetMachine.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/Support/Dwarf.h"
class DIDescriptor {
protected:
- GlobalVariable *GV;
+ GlobalVariable *DbgGV;
/// DIDescriptor constructor. If the specified GV is non-null, this checks
/// to make sure that the tag in the descriptor matches 'RequiredTag'. If
/// not, the debug info is corrupt and we ignore it.
DIDescriptor(GlobalVariable *GV, unsigned RequiredTag);
- std::string getStringField(unsigned Elt) const;
+ const std::string &getStringField(unsigned Elt, std::string &Result) const;
unsigned getUnsignedField(unsigned Elt) const {
return (unsigned)getUInt64Field(Elt);
}
GlobalVariable *getGlobalVariableField(unsigned Elt) const;
public:
- explicit DIDescriptor() : GV(0) {}
- explicit DIDescriptor(GlobalVariable *gv) : GV(gv) {}
+ explicit DIDescriptor() : DbgGV(0) {}
+ explicit DIDescriptor(GlobalVariable *GV) : DbgGV(GV) {}
- bool isNull() const { return GV == 0; }
+ bool isNull() const { return DbgGV == 0; }
- GlobalVariable *getGV() const { return GV; }
+ GlobalVariable *getGV() const { return DbgGV; }
unsigned getVersion() const {
return getUnsignedField(0) & LLVMDebugVersionMask;
return getUnsignedField(0) & ~LLVMDebugVersionMask;
}
+ /// ValidDebugInfo - Return true if V represents valid debug info value.
+ static bool ValidDebugInfo(Value *V, CodeGenOpt::Level OptLevel);
+
+ /// dump - print descriptor.
+ void dump() const;
};
/// DIAnchor - A wrapper for various anchor descriptors.
class DIAnchor : public DIDescriptor {
public:
- explicit DIAnchor(GlobalVariable *GV = 0);
+ explicit DIAnchor(GlobalVariable *GV = 0)
+ : DIDescriptor(GV, dwarf::DW_TAG_anchor) {}
unsigned getAnchorTag() const { return getUnsignedField(1); }
};
/// DISubrange - This is used to represent ranges, for array bounds.
class DISubrange : public DIDescriptor {
public:
- explicit DISubrange(GlobalVariable *GV = 0);
+ explicit DISubrange(GlobalVariable *GV = 0)
+ : DIDescriptor(GV, dwarf::DW_TAG_subrange_type) {}
int64_t getLo() const { return (int64_t)getUInt64Field(1); }
int64_t getHi() const { return (int64_t)getUInt64Field(2); }
/// DICompileUnit - A wrapper for a compile unit.
class DICompileUnit : public DIDescriptor {
public:
- explicit DICompileUnit(GlobalVariable *GV = 0);
+ explicit DICompileUnit(GlobalVariable *GV = 0)
+ : DIDescriptor(GV, dwarf::DW_TAG_compile_unit) {}
unsigned getLanguage() const { return getUnsignedField(2); }
- std::string getFilename() const { return getStringField(3); }
- std::string getDirectory() const { return getStringField(4); }
- std::string getProducer() const { return getStringField(5); }
+ const std::string &getFilename(std::string &F) const {
+ return getStringField(3, F);
+ }
+ const std::string &getDirectory(std::string &F) const {
+ return getStringField(4, F);
+ }
+ const std::string &getProducer(std::string &F) const {
+ return getStringField(5, F);
+ }
/// isMain - Each input file is encoded as a separate compile unit in LLVM
/// debugging information output. However, many target specific tool chains
/// 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); }
+ const std::string &getFlags(std::string &F) const {
+ return getStringField(8, F);
+ }
+ unsigned getRunTimeVersion() const { return getUnsignedField(9); }
/// Verify - Verify that a compile unit is well formed.
bool Verify() const;
/// type/precision or a file/line pair for location info.
class DIEnumerator : public DIDescriptor {
public:
- explicit DIEnumerator(GlobalVariable *GV = 0);
+ explicit DIEnumerator(GlobalVariable *GV = 0)
+ : DIDescriptor(GV, dwarf::DW_TAG_enumerator) {}
- std::string getName() const { return getStringField(1); }
+ const std::string &getName(std::string &F) const {
+ return getStringField(1, F);
+ }
uint64_t getEnumValue() const { return getUInt64Field(2); }
};
virtual ~DIType() {}
DIDescriptor getContext() const { return getDescriptorField(1); }
- std::string getName() const { return getStringField(2); }
+ const std::string &getName(std::string &F) const {
+ return getStringField(2, F);
+ }
DICompileUnit getCompileUnit() const{ return getFieldAs<DICompileUnit>(3); }
unsigned getLineNumber() const { return getUnsignedField(4); }
uint64_t getSizeInBits() const { return getUInt64Field(5); }
/// DIBasicType - A basic type, like 'int' or 'float'.
class DIBasicType : public DIType {
public:
- explicit DIBasicType(GlobalVariable *GV);
+ explicit DIBasicType(GlobalVariable *GV)
+ : DIType(GV, dwarf::DW_TAG_base_type) {}
+
unsigned getEncoding() const { return getUnsignedField(9); }
/// dump - print basic type.
explicit DIDerivedType(GlobalVariable *GV, bool, bool)
: DIType(GV, true, true) {}
public:
- explicit DIDerivedType(GlobalVariable *GV);
+ explicit DIDerivedType(GlobalVariable *GV)
+ : DIType(GV, true, true) {
+ if (GV && !isDerivedType(getTag()))
+ DbgGV = 0;
+ }
+
DIType getTypeDerivedFrom() const { return getFieldAs<DIType>(9); }
/// getOriginalTypeSize - If this type is derived from a base type then
/// FIXME: Why is this a DIDerivedType??
class DICompositeType : public DIDerivedType {
public:
- explicit DICompositeType(GlobalVariable *GV);
+ explicit DICompositeType(GlobalVariable *GV)
+ : DIDerivedType(GV, true, true) {
+ if (GV && !isCompositeType(getTag()))
+ DbgGV = 0;
+ }
+
DIArray getTypeArray() const { return getFieldAs<DIArray>(10); }
+ unsigned getRunTimeLang() const { return getUnsignedField(11); }
/// Verify - Verify that a composite type descriptor is well formed.
bool Verify() const;
virtual ~DIGlobal() {}
DIDescriptor getContext() const { return getDescriptorField(2); }
- std::string getName() const { return getStringField(3); }
- std::string getDisplayName() const { return getStringField(4); }
- std::string getLinkageName() const { return getStringField(5); }
+ const std::string &getName(std::string &F) const {
+ return getStringField(3, F);
+ }
+ const std::string &getDisplayName(std::string &F) const {
+ return getStringField(4, F);
+ }
+ const std::string &getLinkageName(std::string &F) const {
+ return getStringField(5, F);
+ }
DICompileUnit getCompileUnit() const{ return getFieldAs<DICompileUnit>(6); }
unsigned getLineNumber() const { return getUnsignedField(7); }
DIType getType() const { return getFieldAs<DIType>(8); }
/// DISubprogram - This is a wrapper for a subprogram (e.g. a function).
class DISubprogram : public DIGlobal {
public:
- explicit DISubprogram(GlobalVariable *GV = 0);
+ explicit DISubprogram(GlobalVariable *GV = 0)
+ : DIGlobal(GV, dwarf::DW_TAG_subprogram) {}
+
DICompositeType getType() const { return getFieldAs<DICompositeType>(8); }
+ /// getReturnTypeName - Subprogram return types are encoded either as
+ /// DIType or as DICompositeType.
+ const std::string &getReturnTypeName(std::string &F) const {
+ DICompositeType DCT(getFieldAs<DICompositeType>(8));
+ if (!DCT.isNull()) {
+ DIArray A = DCT.getTypeArray();
+ DIType T(A.getElement(0).getGV());
+ return T.getName(F);
+ }
+ DIType T(getFieldAs<DIType>(8));
+ return T.getName(F);
+ }
+
/// Verify - Verify that a subprogram descriptor is well formed.
bool Verify() const;
/// dump - print subprogram.
void dump() const;
+
+ /// describes - Return true if this subprogram provides debugging
+ /// information for the function F.
+ bool describes(const Function *F);
};
/// DIGlobalVariable - This is a wrapper for a global variable.
class DIGlobalVariable : public DIGlobal {
public:
- explicit DIGlobalVariable(GlobalVariable *GV = 0);
+ explicit DIGlobalVariable(GlobalVariable *GV = 0)
+ : DIGlobal(GV, dwarf::DW_TAG_variable) {}
+
GlobalVariable *getGlobal() const { return getGlobalVariableField(11); }
/// Verify - Verify that a global variable descriptor is well formed.
/// global etc).
class DIVariable : public DIDescriptor {
public:
- explicit DIVariable(GlobalVariable *GV = 0);
+ explicit DIVariable(GlobalVariable *GV = 0)
+ : DIDescriptor(GV) {
+ if (GV && !isVariable(getTag()))
+ DbgGV = 0;
+ }
DIDescriptor getContext() const { return getDescriptorField(1); }
- std::string getName() const { return getStringField(2); }
+ const std::string &getName(std::string &F) const {
+ return getStringField(2, F);
+ }
DICompileUnit getCompileUnit() const{ return getFieldAs<DICompileUnit>(3); }
unsigned getLineNumber() const { return getUnsignedField(4); }
DIType getType() const { return getFieldAs<DIType>(5); }
/// DIBlock - This is a wrapper for a block (e.g. a function, scope, etc).
class DIBlock : public DIDescriptor {
public:
- explicit DIBlock(GlobalVariable *GV = 0);
-
+ explicit DIBlock(GlobalVariable *GV = 0)
+ : DIDescriptor(GV, dwarf::DW_TAG_lexical_block) {}
+
DIDescriptor getContext() const { return getDescriptorField(1); }
};
const std::string &Producer,
bool isMain = false,
bool isOptimized = false,
- const char *Flags = "");
+ const char *Flags = "",
+ unsigned RunTimeVer = 0);
/// CreateEnumerator - Create a single enumerator value.
DIEnumerator CreateEnumerator(const std::string &Name, uint64_t Val);
uint64_t AlignInBits,
uint64_t OffsetInBits, unsigned Flags,
DIType DerivedFrom,
- DIArray Elements);
+ DIArray Elements,
+ unsigned RunTimeLang = 0);
/// CreateSubprogram - Create a new descriptor for the specified subprogram.
/// See comments in DISubprogram for descriptions of these fields.
/// Finds the dbg.declare intrinsic corresponding to this value if any.
/// It looks through pointer casts too.
const DbgDeclareInst *findDbgDeclare(const Value *V, bool stripCasts = true);
+
+ /// Find the debug info descriptor corresponding to this global variable.
+ Value *findDbgGlobalDeclare(GlobalVariable *V);
+
+ bool getLocationInfo(const Value *V, std::string &DisplayName, std::string &Type,
+ unsigned &LineNo, std::string &File, std::string &Dir);
} // end namespace llvm
#endif
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