#include "llvm/CodeGen/MachineDebugInfo.h"
#include "llvm/Constants.h"
+#include "llvm/CodeGen/MachineFunctionPass.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineLocation.h"
+#include "llvm/Target/TargetInstrInfo.h"
+#include "llvm/Target/TargetMachine.h"
#include "llvm/DerivedTypes.h"
#include "llvm/GlobalVariable.h"
#include "llvm/Intrinsics.h"
#include "llvm/Instructions.h"
#include "llvm/Module.h"
#include "llvm/Support/Dwarf.h"
-
-#include <iostream>
-
+#include "llvm/Support/Streams.h"
using namespace llvm;
+using namespace llvm::dwarf;
// Handle the Pass registration stuff necessary to use TargetData's.
namespace {
std::vector<GlobalVariable*> Result; // GlobalVariables matching criteria.
std::vector<const Type*> FieldTypes;
- FieldTypes.push_back(Type::UIntTy);
- FieldTypes.push_back(PointerType::get(Type::SByteTy));
+ FieldTypes.push_back(Type::Int32Ty);
+ FieldTypes.push_back(Type::Int32Ty);
// Get the GlobalVariable root.
GlobalVariable *UseRoot = M.getGlobalVariable(RootName,
return Result;
}
-/// getStringValue - Turn an LLVM constant pointer that eventually points to a
-/// global into a string value. Return an empty string if we can't do it.
-///
-static const std::string getStringValue(Value *V, unsigned Offset = 0) {
- if (GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
- if (GV->hasInitializer() && isa<ConstantArray>(GV->getInitializer())) {
- ConstantArray *Init = cast<ConstantArray>(GV->getInitializer());
- if (Init->isString()) {
- std::string Result = Init->getAsString();
- if (Offset < Result.size()) {
- // If we are pointing INTO The string, erase the beginning...
- Result.erase(Result.begin(), Result.begin()+Offset);
-
- // Take off the null terminator, and any string fragments after it.
- std::string::size_type NullPos = Result.find_first_of((char)0);
- if (NullPos != std::string::npos)
- Result.erase(Result.begin()+NullPos, Result.end());
- return Result;
- }
- }
- }
- } else if (Constant *C = dyn_cast<Constant>(V)) {
- if (GlobalValue *GV = dyn_cast<GlobalValue>(C))
- return getStringValue(GV, Offset);
- else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
- if (CE->getOpcode() == Instruction::GetElementPtr) {
- // Turn a gep into the specified offset.
- if (CE->getNumOperands() == 3 &&
- cast<Constant>(CE->getOperand(1))->isNullValue() &&
- isa<ConstantInt>(CE->getOperand(2))) {
- return getStringValue(CE->getOperand(0),
- Offset+cast<ConstantInt>(CE->getOperand(2))->getRawValue());
- }
- }
- }
- }
- return "";
-}
-
/// isStringValue - Return true if the given value can be coerced to a string.
///
static bool isStringValue(Value *V) {
if (GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
return GV;
} else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
- if (CE->getOpcode() == Instruction::Cast) {
+ if (CE->getOpcode() == Instruction::BitCast) {
return dyn_cast<GlobalVariable>(CE->getOperand(0));
}
}
if (isa<GlobalVariable>(V) || isa<ConstantPointerNull>(V)) {
return true;
} else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
- if (CE->getOpcode() == Instruction::Cast) {
+ if (CE->getOpcode() == Instruction::BitCast) {
return isa<GlobalVariable>(CE->getOperand(0));
}
}
/// getUIntOperand - Return ith operand if it is an unsigned integer.
///
-static ConstantUInt *getUIntOperand(GlobalVariable *GV, unsigned i) {
+static ConstantInt *getUIntOperand(GlobalVariable *GV, unsigned i) {
// Make sure the GlobalVariable has an initializer.
if (!GV->hasInitializer()) return NULL;
if (i >= N) return NULL;
// Check constant.
- return dyn_cast<ConstantUInt>(CI->getOperand(i));
+ return dyn_cast<ConstantInt>(CI->getOperand(i));
}
+
//===----------------------------------------------------------------------===//
/// ApplyToFields - Target the visitor to each field of the debug information
///
virtual void Apply(int &Field) { ++Count; }
virtual void Apply(unsigned &Field) { ++Count; }
+ virtual void Apply(int64_t &Field) { ++Count; }
virtual void Apply(uint64_t &Field) { ++Count; }
virtual void Apply(bool &Field) { ++Count; }
virtual void Apply(std::string &Field) { ++Count; }
///
virtual void Apply(int &Field) {
Constant *C = CI->getOperand(I++);
- Field = cast<ConstantSInt>(C)->getValue();
+ Field = cast<ConstantInt>(C)->getSExtValue();
}
virtual void Apply(unsigned &Field) {
Constant *C = CI->getOperand(I++);
- Field = cast<ConstantUInt>(C)->getValue();
+ Field = cast<ConstantInt>(C)->getZExtValue();
+ }
+ virtual void Apply(int64_t &Field) {
+ Constant *C = CI->getOperand(I++);
+ Field = cast<ConstantInt>(C)->getSExtValue();
}
virtual void Apply(uint64_t &Field) {
Constant *C = CI->getOperand(I++);
- Field = cast<ConstantUInt>(C)->getValue();
+ Field = cast<ConstantInt>(C)->getZExtValue();
}
virtual void Apply(bool &Field) {
Constant *C = CI->getOperand(I++);
- Field = cast<ConstantBool>(C)->getValue();
+ Field = cast<ConstantInt>(C)->getZExtValue();
}
virtual void Apply(std::string &Field) {
Constant *C = CI->getOperand(I++);
- Field = getStringValue(C);
+ Field = C->getStringValue();
}
virtual void Apply(DebugInfoDesc *&Field) {
Constant *C = CI->getOperand(I++);
Field = getGlobalVariable(C);
}
virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
+ Field.resize(0);
Constant *C = CI->getOperand(I++);
GlobalVariable *GV = getGlobalVariable(C);
- ConstantArray *CA = cast<ConstantArray>(GV->getInitializer());
- Field.resize(0);
- for (unsigned i = 0, N = CA->getNumOperands(); i < N; ++i) {
- GlobalVariable *GVE = getGlobalVariable(CA->getOperand(i));
- DebugInfoDesc *DE = DR.Deserialize(GVE);
- Field.push_back(DE);
+ if (GV->hasInitializer()) {
+ if (ConstantArray *CA = dyn_cast<ConstantArray>(GV->getInitializer())) {
+ for (unsigned i = 0, N = CA->getNumOperands(); i < N; ++i) {
+ GlobalVariable *GVE = getGlobalVariable(CA->getOperand(i));
+ DebugInfoDesc *DE = DR.Deserialize(GVE);
+ Field.push_back(DE);
+ }
+ } else if (GV->getInitializer()->isNullValue()) {
+ if (const ArrayType *T =
+ dyn_cast<ArrayType>(GV->getType()->getElementType())) {
+ Field.resize(T->getNumElements());
+ }
+ }
}
}
};
/// Apply - Set the value of each of the fields.
///
virtual void Apply(int &Field) {
- Elements.push_back(ConstantSInt::get(Type::IntTy, Field));
+ Elements.push_back(ConstantInt::get(Type::Int32Ty, int32_t(Field)));
}
virtual void Apply(unsigned &Field) {
- Elements.push_back(ConstantUInt::get(Type::UIntTy, Field));
+ Elements.push_back(ConstantInt::get(Type::Int32Ty, uint32_t(Field)));
+ }
+ virtual void Apply(int64_t &Field) {
+ Elements.push_back(ConstantInt::get(Type::Int64Ty, int64_t(Field)));
}
virtual void Apply(uint64_t &Field) {
- Elements.push_back(ConstantUInt::get(Type::UIntTy, Field));
+ Elements.push_back(ConstantInt::get(Type::Int64Ty, uint64_t(Field)));
}
virtual void Apply(bool &Field) {
- Elements.push_back(ConstantBool::get(Field));
+ Elements.push_back(ConstantInt::get(Type::Int1Ty, Field));
}
virtual void Apply(std::string &Field) {
- Elements.push_back(SR.getString(Field));
+ Elements.push_back(SR.getString(Field));
}
virtual void Apply(DebugInfoDesc *&Field) {
GlobalVariable *GV = NULL;
- // If non-NULL the convert to global.
+ // If non-NULL then convert to global.
if (Field) GV = SR.Serialize(Field);
// FIXME - At some point should use specific type.
if (GV) {
// Set to pointer to global.
- Elements.push_back(ConstantExpr::getCast(GV, EmptyTy));
+ Elements.push_back(ConstantExpr::getBitCast(GV, EmptyTy));
} else {
// Use NULL.
Elements.push_back(ConstantPointerNull::get(EmptyTy));
virtual void Apply(GlobalVariable *&Field) {
const PointerType *EmptyTy = SR.getEmptyStructPtrType();
if (Field) {
- Elements.push_back(ConstantExpr::getCast(Field, EmptyTy));
+ Elements.push_back(ConstantExpr::getBitCast(Field, EmptyTy));
} else {
Elements.push_back(ConstantPointerNull::get(EmptyTy));
}
std::vector<Constant *> ArrayElements;
for (unsigned i = 0, N = Field.size(); i < N; ++i) {
- GlobalVariable *GVE = SR.Serialize(Field[i]);
- Constant *CE = ConstantExpr::getCast(GVE, EmptyTy);
- ArrayElements.push_back(cast<Constant>(CE));
+ if (DebugInfoDesc *Element = Field[i]) {
+ GlobalVariable *GVE = SR.Serialize(Element);
+ Constant *CE = ConstantExpr::getBitCast(GVE, EmptyTy);
+ ArrayElements.push_back(cast<Constant>(CE));
+ } else {
+ ArrayElements.push_back(ConstantPointerNull::get(EmptyTy));
+ }
}
Constant *CA = ConstantArray::get(AT, ArrayElements);
- Constant *CAE = ConstantExpr::getCast(CA, EmptyTy);
+ GlobalVariable *CAGV = new GlobalVariable(AT, true,
+ GlobalValue::InternalLinkage,
+ CA, "llvm.dbg.array",
+ SR.getModule());
+ CAGV->setSection("llvm.metadata");
+ Constant *CAE = ConstantExpr::getBitCast(CAGV, EmptyTy);
Elements.push_back(CAE);
}
};
/// Apply - Set the value of each of the fields.
///
virtual void Apply(int &Field) {
- Fields.push_back(Type::IntTy);
+ Fields.push_back(Type::Int32Ty);
}
virtual void Apply(unsigned &Field) {
- Fields.push_back(Type::UIntTy);
+ Fields.push_back(Type::Int32Ty);
+ }
+ virtual void Apply(int64_t &Field) {
+ Fields.push_back(Type::Int64Ty);
}
virtual void Apply(uint64_t &Field) {
- Fields.push_back(Type::UIntTy);
+ Fields.push_back(Type::Int64Ty);
}
virtual void Apply(bool &Field) {
- Fields.push_back(Type::BoolTy);
+ Fields.push_back(Type::Int1Ty);
}
virtual void Apply(std::string &Field) {
Fields.push_back(SR.getStrPtrType());
Constant *C = CI->getOperand(I++);
IsValid = IsValid && isa<ConstantInt>(C);
}
+ virtual void Apply(int64_t &Field) {
+ Constant *C = CI->getOperand(I++);
+ IsValid = IsValid && isa<ConstantInt>(C);
+ }
virtual void Apply(uint64_t &Field) {
Constant *C = CI->getOperand(I++);
IsValid = IsValid && isa<ConstantInt>(C);
}
virtual void Apply(bool &Field) {
Constant *C = CI->getOperand(I++);
- IsValid = IsValid && isa<ConstantBool>(C);
+ IsValid = IsValid && isa<ConstantInt>(C) && C->getType() == Type::Int1Ty;
}
virtual void Apply(std::string &Field) {
Constant *C = CI->getOperand(I++);
- IsValid = IsValid && isStringValue(C);
+ IsValid = IsValid &&
+ (!C || isStringValue(C) || C->isNullValue());
}
virtual void Apply(DebugInfoDesc *&Field) {
// FIXME - Prepare the correct descriptor.
//===----------------------------------------------------------------------===//
-/// TagFromGlobal - Returns the Tag number from a debug info descriptor
-/// GlobalVariable.
+/// TagFromGlobal - Returns the tag number from a debug info descriptor
+/// GlobalVariable. Return DIIValid if operand is not an unsigned int.
unsigned DebugInfoDesc::TagFromGlobal(GlobalVariable *GV) {
- ConstantUInt *C = getUIntOperand(GV, 0);
- return C ? (unsigned)C->getValue() : (unsigned)DIInvalid;
+ ConstantInt *C = getUIntOperand(GV, 0);
+ return C ? ((unsigned)C->getZExtValue() & ~LLVMDebugVersionMask) :
+ (unsigned)DW_TAG_invalid;
+}
+
+/// VersionFromGlobal - Returns the version number from a debug info
+/// descriptor GlobalVariable. Return DIIValid if operand is not an unsigned
+/// int.
+unsigned DebugInfoDesc::VersionFromGlobal(GlobalVariable *GV) {
+ ConstantInt *C = getUIntOperand(GV, 0);
+ return C ? ((unsigned)C->getZExtValue() & LLVMDebugVersionMask) :
+ (unsigned)DW_TAG_invalid;
}
/// DescFactory - Create an instance of debug info descriptor based on Tag.
/// Return NULL if not a recognized Tag.
DebugInfoDesc *DebugInfoDesc::DescFactory(unsigned Tag) {
switch (Tag) {
- case DI_TAG_anchor: return new AnchorDesc();
- case DI_TAG_compile_unit: return new CompileUnitDesc();
- case DI_TAG_global_variable: return new GlobalVariableDesc();
- case DI_TAG_subprogram: return new SubprogramDesc();
- case DI_TAG_basictype: return new BasicTypeDesc();
- case DI_TAG_typedef:
- case DI_TAG_pointer:
- case DI_TAG_reference:
- case DI_TAG_const:
- case DI_TAG_volatile:
- case DI_TAG_restrict: return new DerivedTypeDesc(Tag);
+ case DW_TAG_anchor: return new AnchorDesc();
+ case DW_TAG_compile_unit: return new CompileUnitDesc();
+ case DW_TAG_variable: return new GlobalVariableDesc();
+ case DW_TAG_subprogram: return new SubprogramDesc();
+ case DW_TAG_lexical_block: return new BlockDesc();
+ case DW_TAG_base_type: return new BasicTypeDesc();
+ case DW_TAG_typedef:
+ case DW_TAG_pointer_type:
+ case DW_TAG_reference_type:
+ case DW_TAG_const_type:
+ case DW_TAG_volatile_type:
+ case DW_TAG_restrict_type:
+ case DW_TAG_member:
+ case DW_TAG_inheritance: return new DerivedTypeDesc(Tag);
+ case DW_TAG_array_type:
+ case DW_TAG_structure_type:
+ case DW_TAG_union_type:
+ case DW_TAG_enumeration_type:
+ case DW_TAG_vector_type:
+ case DW_TAG_subroutine_type: return new CompositeTypeDesc(Tag);
+ case DW_TAG_subrange_type: return new SubrangeDesc();
+ case DW_TAG_enumerator: return new EnumeratorDesc();
+ case DW_TAG_return_variable:
+ case DW_TAG_arg_variable:
+ case DW_TAG_auto_variable: return new VariableDesc(Tag);
default: break;
}
return NULL;
//===----------------------------------------------------------------------===//
+AnchorDesc::AnchorDesc()
+: DebugInfoDesc(DW_TAG_anchor)
+, AnchorTag(0)
+{}
+AnchorDesc::AnchorDesc(AnchoredDesc *D)
+: DebugInfoDesc(DW_TAG_anchor)
+, AnchorTag(D->getTag())
+{}
+
+// Implement isa/cast/dyncast.
+bool AnchorDesc::classof(const DebugInfoDesc *D) {
+ return D->getTag() == DW_TAG_anchor;
+}
+
/// getLinkage - get linkage appropriate for this type of descriptor.
///
GlobalValue::LinkageTypes AnchorDesc::getLinkage() const {
void AnchorDesc::ApplyToFields(DIVisitor *Visitor) {
DebugInfoDesc::ApplyToFields(Visitor);
- Visitor->Apply(Name);
+ Visitor->Apply(AnchorTag);
}
-/// getDescString - Return a string used to compose global names and labels.
-///
+/// getDescString - Return a string used to compose global names and labels. A
+/// A global variable name needs to be defined for each debug descriptor that is
+/// anchored. NOTE: that each global variable named here also needs to be added
+/// to the list of names left external in the internalizer.
+/// ExternalNames.insert("llvm.dbg.compile_units");
+/// ExternalNames.insert("llvm.dbg.global_variables");
+/// ExternalNames.insert("llvm.dbg.subprograms");
const char *AnchorDesc::getDescString() const {
- return Name.c_str();
+ switch (AnchorTag) {
+ case DW_TAG_compile_unit: return CompileUnitDesc::AnchorString;
+ case DW_TAG_variable: return GlobalVariableDesc::AnchorString;
+ case DW_TAG_subprogram: return SubprogramDesc::AnchorString;
+ default: break;
+ }
+
+ assert(0 && "Tag does not have a case for anchor string");
+ return "";
}
/// getTypeString - Return a string used to label this descriptors type.
#ifndef NDEBUG
void AnchorDesc::dump() {
- std::cerr << getDescString() << " "
- << "Tag(" << getTag() << "), "
- << "Name(" << Name << ")\n";
+ cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "AnchorTag(" << AnchorTag << ")\n";
}
#endif
void AnchoredDesc::ApplyToFields(DIVisitor *Visitor) {
DebugInfoDesc::ApplyToFields(Visitor);
- Visitor->Apply((DebugInfoDesc *&)Anchor);
+ Visitor->Apply(Anchor);
}
//===----------------------------------------------------------------------===//
CompileUnitDesc::CompileUnitDesc()
-: AnchoredDesc(DI_TAG_compile_unit)
-, DebugVersion(LLVMDebugVersion)
+: AnchoredDesc(DW_TAG_compile_unit)
, Language(0)
, FileName("")
, Directory("")
, Producer("")
{}
-/// DebugVersionFromGlobal - Returns the version number from a compile unit
-/// GlobalVariable.
-unsigned CompileUnitDesc::DebugVersionFromGlobal(GlobalVariable *GV) {
- ConstantUInt *C = getUIntOperand(GV, 2);
- return C ? (unsigned)C->getValue() : (unsigned)DIInvalid;
+// Implement isa/cast/dyncast.
+bool CompileUnitDesc::classof(const DebugInfoDesc *D) {
+ return D->getTag() == DW_TAG_compile_unit;
}
-
+
/// ApplyToFields - Target the visitor to the fields of the CompileUnitDesc.
///
void CompileUnitDesc::ApplyToFields(DIVisitor *Visitor) {
AnchoredDesc::ApplyToFields(Visitor);
+
+ // Handle cases out of sync with compiler.
+ if (getVersion() == 0) {
+ unsigned DebugVersion;
+ Visitor->Apply(DebugVersion);
+ }
- Visitor->Apply(DebugVersion);
Visitor->Apply(Language);
Visitor->Apply(FileName);
Visitor->Apply(Directory);
/// getAnchorString - Return a string used to label this descriptor's anchor.
///
+const char *CompileUnitDesc::AnchorString = "llvm.dbg.compile_units";
const char *CompileUnitDesc::getAnchorString() const {
- return "llvm.dbg.compile_units";
+ return AnchorString;
}
#ifndef NDEBUG
void CompileUnitDesc::dump() {
- std::cerr << getDescString() << " "
- << "Tag(" << getTag() << "), "
- << "Anchor(" << getAnchor() << "), "
- << "DebugVersion(" << DebugVersion << "), "
- << "Language(" << Language << "), "
- << "FileName(\"" << FileName << "\"), "
- << "Directory(\"" << Directory << "\"), "
- << "Producer(\"" << Producer << "\")\n";
+ cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "Anchor(" << getAnchor() << "), "
+ << "Language(" << Language << "), "
+ << "FileName(\"" << FileName << "\"), "
+ << "Directory(\"" << Directory << "\"), "
+ << "Producer(\"" << Producer << "\")\n";
}
#endif
, Context(NULL)
, Name("")
, File(NULL)
+, Line(0)
, Size(0)
+, Align(0)
+, Offset(0)
+, Flags(0)
{}
/// ApplyToFields - Target the visitor to the fields of the TypeDesc.
Visitor->Apply(Context);
Visitor->Apply(Name);
- Visitor->Apply((DebugInfoDesc *&)File);
+ Visitor->Apply(File);
Visitor->Apply(Line);
Visitor->Apply(Size);
+ Visitor->Apply(Align);
+ Visitor->Apply(Offset);
+ if (getVersion() > LLVMDebugVersion4) Visitor->Apply(Flags);
}
/// getDescString - Return a string used to compose global names and labels.
#ifndef NDEBUG
void TypeDesc::dump() {
- std::cerr << getDescString() << " "
- << "Tag(" << getTag() << "), "
- << "Context(" << Context << "), "
- << "Name(\"" << Name << "\"), "
- << "File(" << File << "), "
- << "Line(" << Line << "), "
- << "Size(" << Size << ")\n";
+ cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "Context(" << Context << "), "
+ << "Name(\"" << Name << "\"), "
+ << "File(" << File << "), "
+ << "Line(" << Line << "), "
+ << "Size(" << Size << "), "
+ << "Align(" << Align << "), "
+ << "Offset(" << Offset << "), "
+ << "Flags(" << Flags << ")\n";
}
#endif
//===----------------------------------------------------------------------===//
BasicTypeDesc::BasicTypeDesc()
-: TypeDesc(DI_TAG_basictype)
+: TypeDesc(DW_TAG_base_type)
, Encoding(0)
{}
+// Implement isa/cast/dyncast.
+bool BasicTypeDesc::classof(const DebugInfoDesc *D) {
+ return D->getTag() == DW_TAG_base_type;
+}
+
/// ApplyToFields - Target the visitor to the fields of the BasicTypeDesc.
///
void BasicTypeDesc::ApplyToFields(DIVisitor *Visitor) {
Visitor->Apply(Encoding);
}
+/// getDescString - Return a string used to compose global names and labels.
+///
+const char *BasicTypeDesc::getDescString() const {
+ return "llvm.dbg.basictype";
+}
+
+/// getTypeString - Return a string used to label this descriptor's type.
+///
+const char *BasicTypeDesc::getTypeString() const {
+ return "llvm.dbg.basictype.type";
+}
+
#ifndef NDEBUG
void BasicTypeDesc::dump() {
- std::cerr << getDescString() << " "
- << "Tag(" << getTag() << "), "
- << "Context(" << getContext() << "), "
- << "Name(\"" << getName() << "\"), "
- << "Size(" << getSize() << "), "
- << "Encoding(" << Encoding << ")\n";
+ cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "Context(" << getContext() << "), "
+ << "Name(\"" << getName() << "\"), "
+ << "Size(" << getSize() << "), "
+ << "Encoding(" << Encoding << ")\n";
}
#endif
+
//===----------------------------------------------------------------------===//
DerivedTypeDesc::DerivedTypeDesc(unsigned T)
: TypeDesc(T)
, FromType(NULL)
-{
- assert(classof((const DebugInfoDesc *)this) && "Unknown derived type.");
+{}
+
+// Implement isa/cast/dyncast.
+bool DerivedTypeDesc::classof(const DebugInfoDesc *D) {
+ unsigned T = D->getTag();
+ switch (T) {
+ case DW_TAG_typedef:
+ case DW_TAG_pointer_type:
+ case DW_TAG_reference_type:
+ case DW_TAG_const_type:
+ case DW_TAG_volatile_type:
+ case DW_TAG_restrict_type:
+ case DW_TAG_member:
+ case DW_TAG_inheritance:
+ return true;
+ default: break;
+ }
+ return false;
}
/// ApplyToFields - Target the visitor to the fields of the DerivedTypeDesc.
void DerivedTypeDesc::ApplyToFields(DIVisitor *Visitor) {
TypeDesc::ApplyToFields(Visitor);
- Visitor->Apply((DebugInfoDesc *&)FromType);
+ Visitor->Apply(FromType);
+}
+
+/// getDescString - Return a string used to compose global names and labels.
+///
+const char *DerivedTypeDesc::getDescString() const {
+ return "llvm.dbg.derivedtype";
+}
+
+/// getTypeString - Return a string used to label this descriptor's type.
+///
+const char *DerivedTypeDesc::getTypeString() const {
+ return "llvm.dbg.derivedtype.type";
}
#ifndef NDEBUG
void DerivedTypeDesc::dump() {
- std::cerr << getDescString() << " "
- << "Tag(" << getTag() << "), "
- << "Context(" << getContext() << "), "
- << "Name(\"" << getName() << "\"), "
- << "Size(" << getSize() << "), "
- << "File(" << getFile() << "), "
- << "Line(" << getLine() << "), "
- << "FromType(" << FromType << ")\n";
+ cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "Context(" << getContext() << "), "
+ << "Name(\"" << getName() << "\"), "
+ << "Size(" << getSize() << "), "
+ << "File(" << getFile() << "), "
+ << "Line(" << getLine() << "), "
+ << "FromType(" << FromType << ")\n";
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+
+CompositeTypeDesc::CompositeTypeDesc(unsigned T)
+: DerivedTypeDesc(T)
+, Elements()
+{}
+
+// Implement isa/cast/dyncast.
+bool CompositeTypeDesc::classof(const DebugInfoDesc *D) {
+ unsigned T = D->getTag();
+ switch (T) {
+ case DW_TAG_array_type:
+ case DW_TAG_structure_type:
+ case DW_TAG_union_type:
+ case DW_TAG_enumeration_type:
+ case DW_TAG_vector_type:
+ case DW_TAG_subroutine_type:
+ return true;
+ default: break;
+ }
+ return false;
+}
+
+/// ApplyToFields - Target the visitor to the fields of the CompositeTypeDesc.
+///
+void CompositeTypeDesc::ApplyToFields(DIVisitor *Visitor) {
+ DerivedTypeDesc::ApplyToFields(Visitor);
+
+ Visitor->Apply(Elements);
+}
+
+/// getDescString - Return a string used to compose global names and labels.
+///
+const char *CompositeTypeDesc::getDescString() const {
+ return "llvm.dbg.compositetype";
+}
+
+/// getTypeString - Return a string used to label this descriptor's type.
+///
+const char *CompositeTypeDesc::getTypeString() const {
+ return "llvm.dbg.compositetype.type";
+}
+
+#ifndef NDEBUG
+void CompositeTypeDesc::dump() {
+ cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "Context(" << getContext() << "), "
+ << "Name(\"" << getName() << "\"), "
+ << "Size(" << getSize() << "), "
+ << "File(" << getFile() << "), "
+ << "Line(" << getLine() << "), "
+ << "FromType(" << getFromType() << "), "
+ << "Elements.size(" << Elements.size() << ")\n";
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+
+SubrangeDesc::SubrangeDesc()
+: DebugInfoDesc(DW_TAG_subrange_type)
+, Lo(0)
+, Hi(0)
+{}
+
+// Implement isa/cast/dyncast.
+bool SubrangeDesc::classof(const DebugInfoDesc *D) {
+ return D->getTag() == DW_TAG_subrange_type;
+}
+
+/// ApplyToFields - Target the visitor to the fields of the SubrangeDesc.
+///
+void SubrangeDesc::ApplyToFields(DIVisitor *Visitor) {
+ DebugInfoDesc::ApplyToFields(Visitor);
+
+ Visitor->Apply(Lo);
+ Visitor->Apply(Hi);
+}
+
+/// getDescString - Return a string used to compose global names and labels.
+///
+const char *SubrangeDesc::getDescString() const {
+ return "llvm.dbg.subrange";
+}
+
+/// getTypeString - Return a string used to label this descriptor's type.
+///
+const char *SubrangeDesc::getTypeString() const {
+ return "llvm.dbg.subrange.type";
+}
+
+#ifndef NDEBUG
+void SubrangeDesc::dump() {
+ cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "Lo(" << Lo << "), "
+ << "Hi(" << Hi << ")\n";
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+
+EnumeratorDesc::EnumeratorDesc()
+: DebugInfoDesc(DW_TAG_enumerator)
+, Name("")
+, Value(0)
+{}
+
+// Implement isa/cast/dyncast.
+bool EnumeratorDesc::classof(const DebugInfoDesc *D) {
+ return D->getTag() == DW_TAG_enumerator;
+}
+
+/// ApplyToFields - Target the visitor to the fields of the EnumeratorDesc.
+///
+void EnumeratorDesc::ApplyToFields(DIVisitor *Visitor) {
+ DebugInfoDesc::ApplyToFields(Visitor);
+
+ Visitor->Apply(Name);
+ Visitor->Apply(Value);
+}
+
+/// getDescString - Return a string used to compose global names and labels.
+///
+const char *EnumeratorDesc::getDescString() const {
+ return "llvm.dbg.enumerator";
+}
+
+/// getTypeString - Return a string used to label this descriptor's type.
+///
+const char *EnumeratorDesc::getTypeString() const {
+ return "llvm.dbg.enumerator.type";
+}
+
+#ifndef NDEBUG
+void EnumeratorDesc::dump() {
+ cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "Name(" << Name << "), "
+ << "Value(" << Value << ")\n";
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+
+VariableDesc::VariableDesc(unsigned T)
+: DebugInfoDesc(T)
+, Context(NULL)
+, Name("")
+, File(NULL)
+, Line(0)
+, TyDesc(0)
+{}
+
+// Implement isa/cast/dyncast.
+bool VariableDesc::classof(const DebugInfoDesc *D) {
+ unsigned T = D->getTag();
+ switch (T) {
+ case DW_TAG_auto_variable:
+ case DW_TAG_arg_variable:
+ case DW_TAG_return_variable:
+ return true;
+ default: break;
+ }
+ return false;
+}
+
+/// ApplyToFields - Target the visitor to the fields of the VariableDesc.
+///
+void VariableDesc::ApplyToFields(DIVisitor *Visitor) {
+ DebugInfoDesc::ApplyToFields(Visitor);
+
+ Visitor->Apply(Context);
+ Visitor->Apply(Name);
+ Visitor->Apply(File);
+ Visitor->Apply(Line);
+ Visitor->Apply(TyDesc);
+}
+
+/// getDescString - Return a string used to compose global names and labels.
+///
+const char *VariableDesc::getDescString() const {
+ return "llvm.dbg.variable";
+}
+
+/// getTypeString - Return a string used to label this descriptor's type.
+///
+const char *VariableDesc::getTypeString() const {
+ return "llvm.dbg.variable.type";
+}
+
+#ifndef NDEBUG
+void VariableDesc::dump() {
+ cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "Context(" << Context << "), "
+ << "Name(\"" << Name << "\"), "
+ << "File(" << File << "), "
+ << "Line(" << Line << "), "
+ << "TyDesc(" << TyDesc << ")\n";
}
#endif
: AnchoredDesc(T)
, Context(0)
, Name("")
+, FullName("")
+, LinkageName("")
+, File(NULL)
+, Line(0)
, TyDesc(NULL)
, IsStatic(false)
, IsDefinition(false)
Visitor->Apply(Context);
Visitor->Apply(Name);
- Visitor->Apply((DebugInfoDesc *&)TyDesc);
+ Visitor->Apply(FullName);
+ Visitor->Apply(LinkageName);
+ Visitor->Apply(File);
+ Visitor->Apply(Line);
+ Visitor->Apply(TyDesc);
Visitor->Apply(IsStatic);
Visitor->Apply(IsDefinition);
}
//===----------------------------------------------------------------------===//
GlobalVariableDesc::GlobalVariableDesc()
-: GlobalDesc(DI_TAG_global_variable)
+: GlobalDesc(DW_TAG_variable)
, Global(NULL)
{}
+// Implement isa/cast/dyncast.
+bool GlobalVariableDesc::classof(const DebugInfoDesc *D) {
+ return D->getTag() == DW_TAG_variable;
+}
+
/// ApplyToFields - Target the visitor to the fields of the GlobalVariableDesc.
///
void GlobalVariableDesc::ApplyToFields(DIVisitor *Visitor) {
GlobalDesc::ApplyToFields(Visitor);
Visitor->Apply(Global);
- Visitor->Apply(Line);
}
/// getDescString - Return a string used to compose global names and labels.
/// getAnchorString - Return a string used to label this descriptor's anchor.
///
+const char *GlobalVariableDesc::AnchorString = "llvm.dbg.global_variables";
const char *GlobalVariableDesc::getAnchorString() const {
- return "llvm.dbg.global_variables";
+ return AnchorString;
}
#ifndef NDEBUG
void GlobalVariableDesc::dump() {
- std::cerr << getDescString() << " "
- << "Tag(" << getTag() << "), "
- << "Anchor(" << getAnchor() << "), "
- << "Name(\"" << getName() << "\"), "
- << "Type(\"" << getTypeDesc() << "\"), "
- << "IsStatic(" << (isStatic() ? "true" : "false") << "), "
- << "IsDefinition(" << (isDefinition() ? "true" : "false") << "), "
- << "Global(" << Global << "), "
- << "Line(" << Line << ")\n";
+ cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "Anchor(" << getAnchor() << "), "
+ << "Name(\"" << getName() << "\"), "
+ << "FullName(\"" << getFullName() << "\"), "
+ << "LinkageName(\"" << getLinkageName() << "\"), "
+ << "File(" << getFile() << "),"
+ << "Line(" << getLine() << "),"
+ << "Type(" << getType() << "), "
+ << "IsStatic(" << (isStatic() ? "true" : "false") << "), "
+ << "IsDefinition(" << (isDefinition() ? "true" : "false") << "), "
+ << "Global(" << Global << ")\n";
}
#endif
//===----------------------------------------------------------------------===//
SubprogramDesc::SubprogramDesc()
-: GlobalDesc(DI_TAG_subprogram)
+: GlobalDesc(DW_TAG_subprogram)
{}
+// Implement isa/cast/dyncast.
+bool SubprogramDesc::classof(const DebugInfoDesc *D) {
+ return D->getTag() == DW_TAG_subprogram;
+}
+
/// ApplyToFields - Target the visitor to the fields of the
/// SubprogramDesc.
void SubprogramDesc::ApplyToFields(DIVisitor *Visitor) {
/// getAnchorString - Return a string used to label this descriptor's anchor.
///
+const char *SubprogramDesc::AnchorString = "llvm.dbg.subprograms";
const char *SubprogramDesc::getAnchorString() const {
- return "llvm.dbg.subprograms";
+ return AnchorString;
}
#ifndef NDEBUG
void SubprogramDesc::dump() {
- std::cerr << getDescString() << " "
- << "Tag(" << getTag() << "), "
- << "Anchor(" << getAnchor() << "), "
- << "Name(\"" << getName() << "\"), "
- << "Type(\"" << getTypeDesc() << "\"), "
- << "IsStatic(" << (isStatic() ? "true" : "false") << "), "
- << "IsDefinition(" << (isDefinition() ? "true" : "false") << ")\n";
+ cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "), "
+ << "Anchor(" << getAnchor() << "), "
+ << "Name(\"" << getName() << "\"), "
+ << "FullName(\"" << getFullName() << "\"), "
+ << "LinkageName(\"" << getLinkageName() << "\"), "
+ << "File(" << getFile() << "),"
+ << "Line(" << getLine() << "),"
+ << "Type(" << getType() << "), "
+ << "IsStatic(" << (isStatic() ? "true" : "false") << "), "
+ << "IsDefinition(" << (isDefinition() ? "true" : "false") << ")\n";
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+
+BlockDesc::BlockDesc()
+: DebugInfoDesc(DW_TAG_lexical_block)
+, Context(NULL)
+{}
+
+// Implement isa/cast/dyncast.
+bool BlockDesc::classof(const DebugInfoDesc *D) {
+ return D->getTag() == DW_TAG_lexical_block;
+}
+
+/// ApplyToFields - Target the visitor to the fields of the BlockDesc.
+///
+void BlockDesc::ApplyToFields(DIVisitor *Visitor) {
+ DebugInfoDesc::ApplyToFields(Visitor);
+
+ Visitor->Apply(Context);
+}
+
+/// getDescString - Return a string used to compose global names and labels.
+///
+const char *BlockDesc::getDescString() const {
+ return "llvm.dbg.block";
+}
+
+/// getTypeString - Return a string used to label this descriptors type.
+///
+const char *BlockDesc::getTypeString() const {
+ return "llvm.dbg.block.type";
+}
+
+#ifndef NDEBUG
+void BlockDesc::dump() {
+ cerr << getDescString() << " "
+ << "Version(" << getVersion() << "), "
+ << "Tag(" << getTag() << "),"
+ << "Context(" << Context << ")\n";
}
#endif
// Get the Tag from the global.
unsigned Tag = DebugInfoDesc::TagFromGlobal(GV);
- // Get the debug version if a compile unit.
- if (Tag == DI_TAG_compile_unit) {
- DebugVersion = CompileUnitDesc::DebugVersionFromGlobal(GV);
- }
-
// Create an empty instance of the correct sort.
Slot = DebugInfoDesc::DescFactory(Tag);
- assert(Slot && "Unknown Tag");
- // Deserialize the fields.
- DIDeserializeVisitor DRAM(*this, GV);
- DRAM.ApplyToFields(Slot);
+ // If not a user defined descriptor.
+ if (Slot) {
+ // Deserialize the fields.
+ DIDeserializeVisitor DRAM(*this, GV);
+ DRAM.ApplyToFields(Slot);
+ }
return Slot;
}
// If not already defined.
if (!StrPtrTy) {
// Construct the pointer to signed bytes.
- StrPtrTy = PointerType::get(Type::SByteTy);
+ StrPtrTy = PointerType::get(Type::Int8Ty);
}
return StrPtrTy;
Constant *DISerializer::getString(const std::string &String) {
// Check string cache for previous edition.
Constant *&Slot = StringCache[String];
- // return Constant if previously defined.
+ // Return Constant if previously defined.
if (Slot) return Slot;
- // Construct string as an llvm constant.
- Constant *ConstStr = ConstantArray::get(String);
- // Otherwise create and return a new string global.
- GlobalVariable *StrGV = new GlobalVariable(ConstStr->getType(), true,
- GlobalVariable::InternalLinkage,
- ConstStr, "str", M);
- // Convert to generic string pointer.
- Slot = ConstantExpr::getCast(StrGV, getStrPtrType());
+ // If empty string then use a sbyte* null instead.
+ if (String.empty()) {
+ Slot = ConstantPointerNull::get(getStrPtrType());
+ } else {
+ // Construct string as an llvm constant.
+ Constant *ConstStr = ConstantArray::get(String);
+ // Otherwise create and return a new string global.
+ GlobalVariable *StrGV = new GlobalVariable(ConstStr->getType(), true,
+ GlobalVariable::InternalLinkage,
+ ConstStr, "str", M);
+ StrGV->setSection("llvm.metadata");
+ // Convert to generic string pointer.
+ Slot = ConstantExpr::getBitCast(StrGV, getStrPtrType());
+ }
return Slot;
}
// Create the GlobalVariable early to prevent infinite recursion.
GlobalVariable *GV = new GlobalVariable(Ty, true, DD->getLinkage(),
NULL, DD->getDescString(), M);
+ GV->setSection("llvm.metadata");
// Insert new GlobalVariable in DescGlobals map.
Slot = GV;
//===----------------------------------------------------------------------===//
-/// markVisited - Return true if the GlobalVariable hase been "seen" before.
-/// Mark visited otherwise.
-bool DIVerifier::markVisited(GlobalVariable *GV) {
- // Check if the GlobalVariable is already in the Visited set.
- std::set<GlobalVariable *>::iterator VI = Visited.lower_bound(GV);
-
- // See if GlobalVariable exists.
- bool Exists = VI != Visited.end() && *VI == GV;
-
- // Insert in set.
- if (!Exists) Visited.insert(VI, GV);
-
- return Exists;
-}
-
/// Verify - Return true if the GlobalVariable appears to be a valid
/// serialization of a DebugInfoDesc.
bool DIVerifier::Verify(Value *V) {
- return Verify(getGlobalVariable(V));
+ return !V || Verify(getGlobalVariable(V));
}
bool DIVerifier::Verify(GlobalVariable *GV) {
- // Check if seen before.
- if (markVisited(GV)) return true;
+ // NULLs are valid.
+ if (!GV) return true;
- // Get the Tag
- unsigned Tag = DebugInfoDesc::TagFromGlobal(GV);
- if (Tag == DIInvalid) return false;
+ // Check prior validity.
+ unsigned &ValiditySlot = Validity[GV];
+
+ // If visited before then use old state.
+ if (ValiditySlot) return ValiditySlot == Valid;
+
+ // Assume validity for the time being (recursion.)
+ ValiditySlot = Valid;
+
+ // Make sure the global is internal or link once (anchor.)
+ if (GV->getLinkage() != GlobalValue::InternalLinkage &&
+ GV->getLinkage() != GlobalValue::LinkOnceLinkage) {
+ ValiditySlot = Invalid;
+ return false;
+ }
- // If a compile unit we need the debug version.
- if (Tag == DI_TAG_compile_unit) {
- DebugVersion = CompileUnitDesc::DebugVersionFromGlobal(GV);
- if (DebugVersion == DIInvalid) return false;
+ // Get the Tag.
+ unsigned Tag = DebugInfoDesc::TagFromGlobal(GV);
+
+ // Check for user defined descriptors.
+ if (Tag == DW_TAG_invalid) {
+ ValiditySlot = Valid;
+ return true;
+ }
+
+ // Get the Version.
+ unsigned Version = DebugInfoDesc::VersionFromGlobal(GV);
+
+ // Check for version mismatch.
+ if (Version != LLVMDebugVersion) {
+ ValiditySlot = Invalid;
+ return false;
}
// Construct an empty DebugInfoDesc.
DebugInfoDesc *DD = DebugInfoDesc::DescFactory(Tag);
- if (!DD) return false;
+
+ // Allow for user defined descriptors.
+ if (!DD) return true;
// Get the initializer constant.
ConstantStruct *CI = cast<ConstantStruct>(GV->getInitializer());
unsigned N = CI->getNumOperands();
// Get the field count.
- unsigned &Slot = Counts[Tag];
- if (!Slot) {
+ unsigned &CountSlot = Counts[Tag];
+ if (!CountSlot) {
// Check the operand count to the field count
DICountVisitor CTAM;
CTAM.ApplyToFields(DD);
- Slot = CTAM.getCount();
+ CountSlot = CTAM.getCount();
}
- // Field count must equal operand count.
- if (Slot != N) {
+ // Field count must be at most equal operand count.
+ if (CountSlot > N) {
delete DD;
+ ValiditySlot = Invalid;
return false;
}
// Release empty DebugInfoDesc.
delete DD;
- // Return result of field tests.
- return VRAM.isValid();
+ // If fields are not valid.
+ if (!VRAM.isValid()) {
+ ValiditySlot = Invalid;
+ return false;
+ }
+
+ return true;
}
//===----------------------------------------------------------------------===//
+DebugScope::~DebugScope() {
+ for (unsigned i = 0, N = Scopes.size(); i < N; ++i) delete Scopes[i];
+ for (unsigned j = 0, M = Variables.size(); j < M; ++j) delete Variables[j];
+}
+
+//===----------------------------------------------------------------------===//
MachineDebugInfo::MachineDebugInfo()
: DR()
+, VR()
, CompileUnits()
, Directories()
, SourceFiles()
, Lines()
-{
-
-}
+, LabelIDList()
+, ScopeMap()
+, RootScope(NULL)
+, FrameMoves()
+{}
MachineDebugInfo::~MachineDebugInfo() {
}
return false;
}
+/// BeginFunction - Begin gathering function debug information.
+///
+void MachineDebugInfo::BeginFunction(MachineFunction *MF) {
+ // Coming soon.
+}
+
+/// MachineDebugInfo::EndFunction - Discard function debug information.
+///
+void MachineDebugInfo::EndFunction() {
+ // Clean up scope information.
+ if (RootScope) {
+ delete RootScope;
+ ScopeMap.clear();
+ RootScope = NULL;
+ }
+
+ // Clean up frame info.
+ for (unsigned i = 0, N = FrameMoves.size(); i < N; ++i) delete FrameMoves[i];
+ FrameMoves.clear();
+}
+
/// getDescFor - Convert a Value to a debug information descriptor.
///
// FIXME - use new Value type when available.
/// Verify - Verify that a Value is debug information descriptor.
///
bool MachineDebugInfo::Verify(Value *V) {
- DIVerifier VR;
return VR.Verify(V);
}
const std::string &RootName) {
return ::getGlobalVariablesUsing(M, RootName);
}
+
+/// RecordLabel - Records location information and associates it with a
+/// debug label. Returns a unique label ID used to generate a label and
+/// provide correspondence to the source line list.
+unsigned MachineDebugInfo::RecordLabel(unsigned Line, unsigned Column,
+ unsigned Source) {
+ unsigned ID = NextLabelID();
+ Lines.push_back(SourceLineInfo(Line, Column, Source, ID));
+ return ID;
+}
+
+/// RecordSource - Register a source file with debug info. Returns an source
+/// ID.
+unsigned MachineDebugInfo::RecordSource(const std::string &Directory,
+ const std::string &Source) {
+ unsigned DirectoryID = Directories.insert(Directory);
+ return SourceFiles.insert(SourceFileInfo(DirectoryID, Source));
+}
+unsigned MachineDebugInfo::RecordSource(const CompileUnitDesc *CompileUnit) {
+ return RecordSource(CompileUnit->getDirectory(),
+ CompileUnit->getFileName());
+}
+
+/// RecordRegionStart - Indicate the start of a region.
+///
+unsigned MachineDebugInfo::RecordRegionStart(Value *V) {
+ // FIXME - need to be able to handle split scopes because of bb cloning.
+ DebugInfoDesc *ScopeDesc = DR.Deserialize(V);
+ DebugScope *Scope = getOrCreateScope(ScopeDesc);
+ unsigned ID = NextLabelID();
+ if (!Scope->getStartLabelID()) Scope->setStartLabelID(ID);
+ return ID;
+}
+
+/// RecordRegionEnd - Indicate the end of a region.
+///
+unsigned MachineDebugInfo::RecordRegionEnd(Value *V) {
+ // FIXME - need to be able to handle split scopes because of bb cloning.
+ DebugInfoDesc *ScopeDesc = DR.Deserialize(V);
+ DebugScope *Scope = getOrCreateScope(ScopeDesc);
+ unsigned ID = NextLabelID();
+ Scope->setEndLabelID(ID);
+ return ID;
+}
+
+/// RecordVariable - Indicate the declaration of a local variable.
+///
+void MachineDebugInfo::RecordVariable(Value *V, unsigned FrameIndex) {
+ VariableDesc *VD = cast<VariableDesc>(DR.Deserialize(V));
+ DebugScope *Scope = getOrCreateScope(VD->getContext());
+ DebugVariable *DV = new DebugVariable(VD, FrameIndex);
+ Scope->AddVariable(DV);
+}
+
+/// getOrCreateScope - Returns the scope associated with the given descriptor.
+///
+DebugScope *MachineDebugInfo::getOrCreateScope(DebugInfoDesc *ScopeDesc) {
+ DebugScope *&Slot = ScopeMap[ScopeDesc];
+ if (!Slot) {
+ // FIXME - breaks down when the context is an inlined function.
+ DebugInfoDesc *ParentDesc = NULL;
+ if (BlockDesc *Block = dyn_cast<BlockDesc>(ScopeDesc)) {
+ ParentDesc = Block->getContext();
+ }
+ DebugScope *Parent = ParentDesc ? getOrCreateScope(ParentDesc) : NULL;
+ Slot = new DebugScope(Parent, ScopeDesc);
+ if (Parent) {
+ Parent->AddScope(Slot);
+ } else if (RootScope) {
+ // FIXME - Add inlined function scopes to the root so we can delete
+ // them later. Long term, handle inlined functions properly.
+ RootScope->AddScope(Slot);
+ } else {
+ // First function is top level function.
+ RootScope = Slot;
+ }
+ }
+ return Slot;
+}
+
+//===----------------------------------------------------------------------===//
+/// DebugLabelFolding pass - This pass prunes out redundant debug labels. This
+/// allows a debug emitter to determine if the range of two labels is empty,
+/// by seeing if the labels map to the same reduced label.
+
+namespace llvm {
+
+struct DebugLabelFolder : public MachineFunctionPass {
+ virtual bool runOnMachineFunction(MachineFunction &MF);
+ virtual const char *getPassName() const { return "Debug Label Folder"; }
+};
+
+bool DebugLabelFolder::runOnMachineFunction(MachineFunction &MF) {
+ // Get machine debug info.
+ MachineDebugInfo *MDI = getAnalysisToUpdate<MachineDebugInfo>();
+ if (!MDI) return false;
+ // Get target instruction info.
+ const TargetInstrInfo *TII = MF.getTarget().getInstrInfo();
+ if (!TII) return false;
+ // Get target version of the debug label opcode.
+ unsigned DWARF_LABELOpc = TII->getDWARF_LABELOpcode();
+ if (!DWARF_LABELOpc) return false;
+
+ // Track if change is made.
+ bool MadeChange = false;
+ // No prior label to begin.
+ unsigned PriorLabel = 0;
+
+ // Iterate through basic blocks.
+ for (MachineFunction::iterator BB = MF.begin(), E = MF.end();
+ BB != E; ++BB) {
+ // Iterate through instructions.
+ for (MachineBasicBlock::iterator I = BB->begin(), E = BB->end(); I != E; ) {
+ // Is it a debug label.
+ if ((unsigned)I->getOpcode() == DWARF_LABELOpc) {
+ // The label ID # is always operand #0, an immediate.
+ unsigned NextLabel = I->getOperand(0).getImm();
+
+ // If there was an immediate prior label.
+ if (PriorLabel) {
+ // Remap the current label to prior label.
+ MDI->RemapLabel(NextLabel, PriorLabel);
+ // Delete the current label.
+ I = BB->erase(I);
+ // Indicate a change has been made.
+ MadeChange = true;
+ continue;
+ } else {
+ // Start a new round.
+ PriorLabel = NextLabel;
+ }
+ } else {
+ // No consecutive labels.
+ PriorLabel = 0;
+ }
+
+ ++I;
+ }
+ }
+
+ return MadeChange;
+}
+
+FunctionPass *createDebugLabelFoldingPass() { return new DebugLabelFolder(); }
+
+}
+
projects / oota-llvm.git / blobdiff