forked from OSchip/llvm-project
1801 lines
53 KiB
C++
1801 lines
53 KiB
C++
//===-- llvm/CodeGen/MachineModuleInfo.cpp ----------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by James M. Laskey and is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/CodeGen/MachineModuleInfo.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/Target/TargetOptions.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 "llvm/Support/Streams.h"
|
|
using namespace llvm;
|
|
using namespace llvm::dwarf;
|
|
|
|
// Handle the Pass registration stuff necessary to use TargetData's.
|
|
namespace {
|
|
RegisterPass<MachineModuleInfo> X("machinemoduleinfo", "Module Information");
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// getGlobalVariablesUsing - Return all of the GlobalVariables which have the
|
|
/// specified value in their initializer somewhere.
|
|
static void
|
|
getGlobalVariablesUsing(Value *V, std::vector<GlobalVariable*> &Result) {
|
|
// Scan though value users.
|
|
for (Value::use_iterator I = V->use_begin(), E = V->use_end(); I != E; ++I) {
|
|
if (GlobalVariable *GV = dyn_cast<GlobalVariable>(*I)) {
|
|
// If the user is a GlobalVariable then add to result.
|
|
Result.push_back(GV);
|
|
} else if (Constant *C = dyn_cast<Constant>(*I)) {
|
|
// If the user is a constant variable then scan its users
|
|
getGlobalVariablesUsing(C, Result);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// getGlobalVariablesUsing - Return all of the GlobalVariables that use the
|
|
/// named GlobalVariable.
|
|
static std::vector<GlobalVariable*>
|
|
getGlobalVariablesUsing(Module &M, const std::string &RootName) {
|
|
std::vector<GlobalVariable*> Result; // GlobalVariables matching criteria.
|
|
|
|
std::vector<const Type*> FieldTypes;
|
|
FieldTypes.push_back(Type::Int32Ty);
|
|
FieldTypes.push_back(Type::Int32Ty);
|
|
|
|
// Get the GlobalVariable root.
|
|
GlobalVariable *UseRoot = M.getGlobalVariable(RootName,
|
|
StructType::get(FieldTypes));
|
|
|
|
// If present and linkonce then scan for users.
|
|
if (UseRoot && UseRoot->hasLinkOnceLinkage()) {
|
|
getGlobalVariablesUsing(UseRoot, Result);
|
|
}
|
|
|
|
return Result;
|
|
}
|
|
|
|
/// 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)) {
|
|
if (GV->hasInitializer() && isa<ConstantArray>(GV->getInitializer())) {
|
|
ConstantArray *Init = cast<ConstantArray>(GV->getInitializer());
|
|
return Init->isString();
|
|
}
|
|
} else if (Constant *C = dyn_cast<Constant>(V)) {
|
|
if (GlobalValue *GV = dyn_cast<GlobalValue>(C))
|
|
return isStringValue(GV);
|
|
else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
|
|
if (CE->getOpcode() == Instruction::GetElementPtr) {
|
|
if (CE->getNumOperands() == 3 &&
|
|
cast<Constant>(CE->getOperand(1))->isNullValue() &&
|
|
isa<ConstantInt>(CE->getOperand(2))) {
|
|
return isStringValue(CE->getOperand(0));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/// getGlobalVariable - Return either a direct or cast Global value.
|
|
///
|
|
static GlobalVariable *getGlobalVariable(Value *V) {
|
|
if (GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
|
|
return GV;
|
|
} else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
|
|
if (CE->getOpcode() == Instruction::BitCast) {
|
|
return dyn_cast<GlobalVariable>(CE->getOperand(0));
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/// isGlobalVariable - Return true if the given value can be coerced to a
|
|
/// GlobalVariable.
|
|
static bool isGlobalVariable(Value *V) {
|
|
if (isa<GlobalVariable>(V) || isa<ConstantPointerNull>(V)) {
|
|
return true;
|
|
} else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
|
|
if (CE->getOpcode() == Instruction::BitCast) {
|
|
return isa<GlobalVariable>(CE->getOperand(0));
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/// getUIntOperand - Return ith operand if it is an unsigned integer.
|
|
///
|
|
static ConstantInt *getUIntOperand(GlobalVariable *GV, unsigned i) {
|
|
// Make sure the GlobalVariable has an initializer.
|
|
if (!GV->hasInitializer()) return NULL;
|
|
|
|
// Get the initializer constant.
|
|
ConstantStruct *CI = dyn_cast<ConstantStruct>(GV->getInitializer());
|
|
if (!CI) return NULL;
|
|
|
|
// Check if there is at least i + 1 operands.
|
|
unsigned N = CI->getNumOperands();
|
|
if (i >= N) return NULL;
|
|
|
|
// Check constant.
|
|
return dyn_cast<ConstantInt>(CI->getOperand(i));
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// ApplyToFields - Target the visitor to each field of the debug information
|
|
/// descriptor.
|
|
void DIVisitor::ApplyToFields(DebugInfoDesc *DD) {
|
|
DD->ApplyToFields(this);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
/// DICountVisitor - This DIVisitor counts all the fields in the supplied debug
|
|
/// the supplied DebugInfoDesc.
|
|
class DICountVisitor : public DIVisitor {
|
|
private:
|
|
unsigned Count; // Running count of fields.
|
|
|
|
public:
|
|
DICountVisitor() : DIVisitor(), Count(0) {}
|
|
|
|
// Accessors.
|
|
unsigned getCount() const { return Count; }
|
|
|
|
/// Apply - Count each of the fields.
|
|
///
|
|
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(DebugInfoDesc *&Field) { ++Count; }
|
|
virtual void Apply(GlobalVariable *&Field) { ++Count; }
|
|
virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
|
|
++Count;
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
/// DIDeserializeVisitor - This DIVisitor deserializes all the fields in the
|
|
/// supplied DebugInfoDesc.
|
|
class DIDeserializeVisitor : public DIVisitor {
|
|
private:
|
|
DIDeserializer &DR; // Active deserializer.
|
|
unsigned I; // Current operand index.
|
|
ConstantStruct *CI; // GlobalVariable constant initializer.
|
|
|
|
public:
|
|
DIDeserializeVisitor(DIDeserializer &D, GlobalVariable *GV)
|
|
: DIVisitor()
|
|
, DR(D)
|
|
, I(0)
|
|
, CI(cast<ConstantStruct>(GV->getInitializer()))
|
|
{}
|
|
|
|
/// Apply - Set the value of each of the fields.
|
|
///
|
|
virtual void Apply(int &Field) {
|
|
Constant *C = CI->getOperand(I++);
|
|
Field = cast<ConstantInt>(C)->getSExtValue();
|
|
}
|
|
virtual void Apply(unsigned &Field) {
|
|
Constant *C = CI->getOperand(I++);
|
|
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<ConstantInt>(C)->getZExtValue();
|
|
}
|
|
virtual void Apply(bool &Field) {
|
|
Constant *C = CI->getOperand(I++);
|
|
Field = cast<ConstantInt>(C)->getZExtValue();
|
|
}
|
|
virtual void Apply(std::string &Field) {
|
|
Constant *C = CI->getOperand(I++);
|
|
Field = C->getStringValue();
|
|
}
|
|
virtual void Apply(DebugInfoDesc *&Field) {
|
|
Constant *C = CI->getOperand(I++);
|
|
Field = DR.Deserialize(C);
|
|
}
|
|
virtual void Apply(GlobalVariable *&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);
|
|
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());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
/// DISerializeVisitor - This DIVisitor serializes all the fields in
|
|
/// the supplied DebugInfoDesc.
|
|
class DISerializeVisitor : public DIVisitor {
|
|
private:
|
|
DISerializer &SR; // Active serializer.
|
|
std::vector<Constant*> &Elements; // Element accumulator.
|
|
|
|
public:
|
|
DISerializeVisitor(DISerializer &S, std::vector<Constant*> &E)
|
|
: DIVisitor()
|
|
, SR(S)
|
|
, Elements(E)
|
|
{}
|
|
|
|
/// Apply - Set the value of each of the fields.
|
|
///
|
|
virtual void Apply(int &Field) {
|
|
Elements.push_back(ConstantInt::get(Type::Int32Ty, int32_t(Field)));
|
|
}
|
|
virtual void Apply(unsigned &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(ConstantInt::get(Type::Int64Ty, uint64_t(Field)));
|
|
}
|
|
virtual void Apply(bool &Field) {
|
|
Elements.push_back(ConstantInt::get(Type::Int1Ty, Field));
|
|
}
|
|
virtual void Apply(std::string &Field) {
|
|
Elements.push_back(SR.getString(Field));
|
|
}
|
|
virtual void Apply(DebugInfoDesc *&Field) {
|
|
GlobalVariable *GV = NULL;
|
|
|
|
// If non-NULL then convert to global.
|
|
if (Field) GV = SR.Serialize(Field);
|
|
|
|
// FIXME - At some point should use specific type.
|
|
const PointerType *EmptyTy = SR.getEmptyStructPtrType();
|
|
|
|
if (GV) {
|
|
// Set to pointer to global.
|
|
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::getBitCast(Field, EmptyTy));
|
|
} else {
|
|
Elements.push_back(ConstantPointerNull::get(EmptyTy));
|
|
}
|
|
}
|
|
virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
|
|
const PointerType *EmptyTy = SR.getEmptyStructPtrType();
|
|
unsigned N = Field.size();
|
|
ArrayType *AT = ArrayType::get(EmptyTy, N);
|
|
std::vector<Constant *> ArrayElements;
|
|
|
|
for (unsigned i = 0, N = Field.size(); i < N; ++i) {
|
|
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);
|
|
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);
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
/// DIGetTypesVisitor - This DIVisitor gathers all the field types in
|
|
/// the supplied DebugInfoDesc.
|
|
class DIGetTypesVisitor : public DIVisitor {
|
|
private:
|
|
DISerializer &SR; // Active serializer.
|
|
std::vector<const Type*> &Fields; // Type accumulator.
|
|
|
|
public:
|
|
DIGetTypesVisitor(DISerializer &S, std::vector<const Type*> &F)
|
|
: DIVisitor()
|
|
, SR(S)
|
|
, Fields(F)
|
|
{}
|
|
|
|
/// Apply - Set the value of each of the fields.
|
|
///
|
|
virtual void Apply(int &Field) {
|
|
Fields.push_back(Type::Int32Ty);
|
|
}
|
|
virtual void Apply(unsigned &Field) {
|
|
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::Int64Ty);
|
|
}
|
|
virtual void Apply(bool &Field) {
|
|
Fields.push_back(Type::Int1Ty);
|
|
}
|
|
virtual void Apply(std::string &Field) {
|
|
Fields.push_back(SR.getStrPtrType());
|
|
}
|
|
virtual void Apply(DebugInfoDesc *&Field) {
|
|
// FIXME - At some point should use specific type.
|
|
const PointerType *EmptyTy = SR.getEmptyStructPtrType();
|
|
Fields.push_back(EmptyTy);
|
|
}
|
|
virtual void Apply(GlobalVariable *&Field) {
|
|
const PointerType *EmptyTy = SR.getEmptyStructPtrType();
|
|
Fields.push_back(EmptyTy);
|
|
}
|
|
virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
|
|
const PointerType *EmptyTy = SR.getEmptyStructPtrType();
|
|
Fields.push_back(EmptyTy);
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
/// DIVerifyVisitor - This DIVisitor verifies all the field types against
|
|
/// a constant initializer.
|
|
class DIVerifyVisitor : public DIVisitor {
|
|
private:
|
|
DIVerifier &VR; // Active verifier.
|
|
bool IsValid; // Validity status.
|
|
unsigned I; // Current operand index.
|
|
ConstantStruct *CI; // GlobalVariable constant initializer.
|
|
|
|
public:
|
|
DIVerifyVisitor(DIVerifier &V, GlobalVariable *GV)
|
|
: DIVisitor()
|
|
, VR(V)
|
|
, IsValid(true)
|
|
, I(0)
|
|
, CI(cast<ConstantStruct>(GV->getInitializer()))
|
|
{
|
|
}
|
|
|
|
// Accessors.
|
|
bool isValid() const { return IsValid; }
|
|
|
|
/// Apply - Set the value of each of the fields.
|
|
///
|
|
virtual void Apply(int &Field) {
|
|
Constant *C = CI->getOperand(I++);
|
|
IsValid = IsValid && isa<ConstantInt>(C);
|
|
}
|
|
virtual void Apply(unsigned &Field) {
|
|
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<ConstantInt>(C) && C->getType() == Type::Int1Ty;
|
|
}
|
|
virtual void Apply(std::string &Field) {
|
|
Constant *C = CI->getOperand(I++);
|
|
IsValid = IsValid &&
|
|
(!C || isStringValue(C) || C->isNullValue());
|
|
}
|
|
virtual void Apply(DebugInfoDesc *&Field) {
|
|
// FIXME - Prepare the correct descriptor.
|
|
Constant *C = CI->getOperand(I++);
|
|
IsValid = IsValid && isGlobalVariable(C);
|
|
}
|
|
virtual void Apply(GlobalVariable *&Field) {
|
|
Constant *C = CI->getOperand(I++);
|
|
IsValid = IsValid && isGlobalVariable(C);
|
|
}
|
|
virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
|
|
Constant *C = CI->getOperand(I++);
|
|
IsValid = IsValid && isGlobalVariable(C);
|
|
if (!IsValid) return;
|
|
|
|
GlobalVariable *GV = getGlobalVariable(C);
|
|
IsValid = IsValid && GV && GV->hasInitializer();
|
|
if (!IsValid) return;
|
|
|
|
ConstantArray *CA = dyn_cast<ConstantArray>(GV->getInitializer());
|
|
IsValid = IsValid && CA;
|
|
if (!IsValid) return;
|
|
|
|
for (unsigned i = 0, N = CA->getNumOperands(); IsValid && i < N; ++i) {
|
|
IsValid = IsValid && isGlobalVariable(CA->getOperand(i));
|
|
if (!IsValid) return;
|
|
|
|
GlobalVariable *GVE = getGlobalVariable(CA->getOperand(i));
|
|
VR.Verify(GVE);
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// 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) {
|
|
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 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;
|
|
}
|
|
|
|
/// getLinkage - get linkage appropriate for this type of descriptor.
|
|
///
|
|
GlobalValue::LinkageTypes DebugInfoDesc::getLinkage() const {
|
|
return GlobalValue::InternalLinkage;
|
|
}
|
|
|
|
/// ApplyToFields - Target the vistor to the fields of the descriptor.
|
|
///
|
|
void DebugInfoDesc::ApplyToFields(DIVisitor *Visitor) {
|
|
Visitor->Apply(Tag);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
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 {
|
|
return GlobalValue::LinkOnceLinkage;
|
|
}
|
|
|
|
/// ApplyToFields - Target the visitor to the fields of the TransUnitDesc.
|
|
///
|
|
void AnchorDesc::ApplyToFields(DIVisitor *Visitor) {
|
|
DebugInfoDesc::ApplyToFields(Visitor);
|
|
|
|
Visitor->Apply(AnchorTag);
|
|
}
|
|
|
|
/// 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 {
|
|
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.
|
|
///
|
|
const char *AnchorDesc::getTypeString() const {
|
|
return "llvm.dbg.anchor.type";
|
|
}
|
|
|
|
#ifndef NDEBUG
|
|
void AnchorDesc::dump() {
|
|
cerr << getDescString() << " "
|
|
<< "Version(" << getVersion() << "), "
|
|
<< "Tag(" << getTag() << "), "
|
|
<< "AnchorTag(" << AnchorTag << ")\n";
|
|
}
|
|
#endif
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
AnchoredDesc::AnchoredDesc(unsigned T)
|
|
: DebugInfoDesc(T)
|
|
, Anchor(NULL)
|
|
{}
|
|
|
|
/// ApplyToFields - Target the visitor to the fields of the AnchoredDesc.
|
|
///
|
|
void AnchoredDesc::ApplyToFields(DIVisitor *Visitor) {
|
|
DebugInfoDesc::ApplyToFields(Visitor);
|
|
|
|
Visitor->Apply(Anchor);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
CompileUnitDesc::CompileUnitDesc()
|
|
: AnchoredDesc(DW_TAG_compile_unit)
|
|
, Language(0)
|
|
, FileName("")
|
|
, Directory("")
|
|
, Producer("")
|
|
{}
|
|
|
|
// 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(Language);
|
|
Visitor->Apply(FileName);
|
|
Visitor->Apply(Directory);
|
|
Visitor->Apply(Producer);
|
|
}
|
|
|
|
/// getDescString - Return a string used to compose global names and labels.
|
|
///
|
|
const char *CompileUnitDesc::getDescString() const {
|
|
return "llvm.dbg.compile_unit";
|
|
}
|
|
|
|
/// getTypeString - Return a string used to label this descriptors type.
|
|
///
|
|
const char *CompileUnitDesc::getTypeString() const {
|
|
return "llvm.dbg.compile_unit.type";
|
|
}
|
|
|
|
/// 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 AnchorString;
|
|
}
|
|
|
|
#ifndef NDEBUG
|
|
void CompileUnitDesc::dump() {
|
|
cerr << getDescString() << " "
|
|
<< "Version(" << getVersion() << "), "
|
|
<< "Tag(" << getTag() << "), "
|
|
<< "Anchor(" << getAnchor() << "), "
|
|
<< "Language(" << Language << "), "
|
|
<< "FileName(\"" << FileName << "\"), "
|
|
<< "Directory(\"" << Directory << "\"), "
|
|
<< "Producer(\"" << Producer << "\")\n";
|
|
}
|
|
#endif
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
TypeDesc::TypeDesc(unsigned T)
|
|
: DebugInfoDesc(T)
|
|
, 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.
|
|
///
|
|
void TypeDesc::ApplyToFields(DIVisitor *Visitor) {
|
|
DebugInfoDesc::ApplyToFields(Visitor);
|
|
|
|
Visitor->Apply(Context);
|
|
Visitor->Apply(Name);
|
|
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.
|
|
///
|
|
const char *TypeDesc::getDescString() const {
|
|
return "llvm.dbg.type";
|
|
}
|
|
|
|
/// getTypeString - Return a string used to label this descriptor's type.
|
|
///
|
|
const char *TypeDesc::getTypeString() const {
|
|
return "llvm.dbg.type.type";
|
|
}
|
|
|
|
#ifndef NDEBUG
|
|
void TypeDesc::dump() {
|
|
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(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) {
|
|
TypeDesc::ApplyToFields(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() {
|
|
cerr << getDescString() << " "
|
|
<< "Version(" << getVersion() << "), "
|
|
<< "Tag(" << getTag() << "), "
|
|
<< "Context(" << getContext() << "), "
|
|
<< "Name(\"" << getName() << "\"), "
|
|
<< "Size(" << getSize() << "), "
|
|
<< "Encoding(" << Encoding << ")\n";
|
|
}
|
|
#endif
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
DerivedTypeDesc::DerivedTypeDesc(unsigned T)
|
|
: TypeDesc(T)
|
|
, FromType(NULL)
|
|
{}
|
|
|
|
// 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(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() {
|
|
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
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
GlobalDesc::GlobalDesc(unsigned T)
|
|
: AnchoredDesc(T)
|
|
, Context(0)
|
|
, Name("")
|
|
, FullName("")
|
|
, LinkageName("")
|
|
, File(NULL)
|
|
, Line(0)
|
|
, TyDesc(NULL)
|
|
, IsStatic(false)
|
|
, IsDefinition(false)
|
|
{}
|
|
|
|
/// ApplyToFields - Target the visitor to the fields of the global.
|
|
///
|
|
void GlobalDesc::ApplyToFields(DIVisitor *Visitor) {
|
|
AnchoredDesc::ApplyToFields(Visitor);
|
|
|
|
Visitor->Apply(Context);
|
|
Visitor->Apply(Name);
|
|
Visitor->Apply(FullName);
|
|
Visitor->Apply(LinkageName);
|
|
Visitor->Apply(File);
|
|
Visitor->Apply(Line);
|
|
Visitor->Apply(TyDesc);
|
|
Visitor->Apply(IsStatic);
|
|
Visitor->Apply(IsDefinition);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
GlobalVariableDesc::GlobalVariableDesc()
|
|
: 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);
|
|
}
|
|
|
|
/// getDescString - Return a string used to compose global names and labels.
|
|
///
|
|
const char *GlobalVariableDesc::getDescString() const {
|
|
return "llvm.dbg.global_variable";
|
|
}
|
|
|
|
/// getTypeString - Return a string used to label this descriptors type.
|
|
///
|
|
const char *GlobalVariableDesc::getTypeString() const {
|
|
return "llvm.dbg.global_variable.type";
|
|
}
|
|
|
|
/// 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 AnchorString;
|
|
}
|
|
|
|
#ifndef NDEBUG
|
|
void GlobalVariableDesc::dump() {
|
|
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(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) {
|
|
GlobalDesc::ApplyToFields(Visitor);
|
|
}
|
|
|
|
/// getDescString - Return a string used to compose global names and labels.
|
|
///
|
|
const char *SubprogramDesc::getDescString() const {
|
|
return "llvm.dbg.subprogram";
|
|
}
|
|
|
|
/// getTypeString - Return a string used to label this descriptors type.
|
|
///
|
|
const char *SubprogramDesc::getTypeString() const {
|
|
return "llvm.dbg.subprogram.type";
|
|
}
|
|
|
|
/// getAnchorString - Return a string used to label this descriptor's anchor.
|
|
///
|
|
const char *SubprogramDesc::AnchorString = "llvm.dbg.subprograms";
|
|
const char *SubprogramDesc::getAnchorString() const {
|
|
return AnchorString;
|
|
}
|
|
|
|
#ifndef NDEBUG
|
|
void SubprogramDesc::dump() {
|
|
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
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
DebugInfoDesc *DIDeserializer::Deserialize(Value *V) {
|
|
return Deserialize(getGlobalVariable(V));
|
|
}
|
|
DebugInfoDesc *DIDeserializer::Deserialize(GlobalVariable *GV) {
|
|
// Handle NULL.
|
|
if (!GV) return NULL;
|
|
|
|
// Check to see if it has been already deserialized.
|
|
DebugInfoDesc *&Slot = GlobalDescs[GV];
|
|
if (Slot) return Slot;
|
|
|
|
// Get the Tag from the global.
|
|
unsigned Tag = DebugInfoDesc::TagFromGlobal(GV);
|
|
|
|
// Create an empty instance of the correct sort.
|
|
Slot = DebugInfoDesc::DescFactory(Tag);
|
|
|
|
// If not a user defined descriptor.
|
|
if (Slot) {
|
|
// Deserialize the fields.
|
|
DIDeserializeVisitor DRAM(*this, GV);
|
|
DRAM.ApplyToFields(Slot);
|
|
}
|
|
|
|
return Slot;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// getStrPtrType - Return a "sbyte *" type.
|
|
///
|
|
const PointerType *DISerializer::getStrPtrType() {
|
|
// If not already defined.
|
|
if (!StrPtrTy) {
|
|
// Construct the pointer to signed bytes.
|
|
StrPtrTy = PointerType::get(Type::Int8Ty);
|
|
}
|
|
|
|
return StrPtrTy;
|
|
}
|
|
|
|
/// getEmptyStructPtrType - Return a "{ }*" type.
|
|
///
|
|
const PointerType *DISerializer::getEmptyStructPtrType() {
|
|
// If not already defined.
|
|
if (!EmptyStructPtrTy) {
|
|
// Construct the empty structure type.
|
|
const StructType *EmptyStructTy =
|
|
StructType::get(std::vector<const Type*>());
|
|
// Construct the pointer to empty structure type.
|
|
EmptyStructPtrTy = PointerType::get(EmptyStructTy);
|
|
}
|
|
|
|
return EmptyStructPtrTy;
|
|
}
|
|
|
|
/// getTagType - Return the type describing the specified descriptor (via tag.)
|
|
///
|
|
const StructType *DISerializer::getTagType(DebugInfoDesc *DD) {
|
|
// Attempt to get the previously defined type.
|
|
StructType *&Ty = TagTypes[DD->getTag()];
|
|
|
|
// If not already defined.
|
|
if (!Ty) {
|
|
// Set up fields vector.
|
|
std::vector<const Type*> Fields;
|
|
// Get types of fields.
|
|
DIGetTypesVisitor GTAM(*this, Fields);
|
|
GTAM.ApplyToFields(DD);
|
|
|
|
// Construct structured type.
|
|
Ty = StructType::get(Fields);
|
|
|
|
// Register type name with module.
|
|
M->addTypeName(DD->getTypeString(), Ty);
|
|
}
|
|
|
|
return Ty;
|
|
}
|
|
|
|
/// getString - Construct the string as constant string global.
|
|
///
|
|
Constant *DISerializer::getString(const std::string &String) {
|
|
// Check string cache for previous edition.
|
|
Constant *&Slot = StringCache[String];
|
|
// Return Constant if previously defined.
|
|
if (Slot) return Slot;
|
|
// 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;
|
|
|
|
}
|
|
|
|
/// Serialize - Recursively cast the specified descriptor into a GlobalVariable
|
|
/// so that it can be serialized to a .bc or .ll file.
|
|
GlobalVariable *DISerializer::Serialize(DebugInfoDesc *DD) {
|
|
// Check if the DebugInfoDesc is already in the map.
|
|
GlobalVariable *&Slot = DescGlobals[DD];
|
|
|
|
// See if DebugInfoDesc exists, if so return prior GlobalVariable.
|
|
if (Slot) return Slot;
|
|
|
|
// Get the type associated with the Tag.
|
|
const StructType *Ty = getTagType(DD);
|
|
|
|
// 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;
|
|
|
|
// Set up elements vector
|
|
std::vector<Constant*> Elements;
|
|
// Add fields.
|
|
DISerializeVisitor SRAM(*this, Elements);
|
|
SRAM.ApplyToFields(DD);
|
|
|
|
// Set the globals initializer.
|
|
GV->setInitializer(ConstantStruct::get(Ty, Elements));
|
|
|
|
return GV;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// Verify - Return true if the GlobalVariable appears to be a valid
|
|
/// serialization of a DebugInfoDesc.
|
|
bool DIVerifier::Verify(Value *V) {
|
|
return !V || Verify(getGlobalVariable(V));
|
|
}
|
|
bool DIVerifier::Verify(GlobalVariable *GV) {
|
|
// NULLs are valid.
|
|
if (!GV) return true;
|
|
|
|
// 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;
|
|
}
|
|
|
|
// 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);
|
|
|
|
// Allow for user defined descriptors.
|
|
if (!DD) return true;
|
|
|
|
// Get the initializer constant.
|
|
ConstantStruct *CI = cast<ConstantStruct>(GV->getInitializer());
|
|
|
|
// Get the operand count.
|
|
unsigned N = CI->getNumOperands();
|
|
|
|
// Get the field count.
|
|
unsigned &CountSlot = Counts[Tag];
|
|
if (!CountSlot) {
|
|
// Check the operand count to the field count
|
|
DICountVisitor CTAM;
|
|
CTAM.ApplyToFields(DD);
|
|
CountSlot = CTAM.getCount();
|
|
}
|
|
|
|
// Field count must be at most equal operand count.
|
|
if (CountSlot > N) {
|
|
delete DD;
|
|
ValiditySlot = Invalid;
|
|
return false;
|
|
}
|
|
|
|
// Check each field for valid type.
|
|
DIVerifyVisitor VRAM(*this, GV);
|
|
VRAM.ApplyToFields(DD);
|
|
|
|
// Release empty DebugInfoDesc.
|
|
delete DD;
|
|
|
|
// 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];
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
MachineModuleInfo::MachineModuleInfo()
|
|
: DR()
|
|
, VR()
|
|
, CompileUnits()
|
|
, Directories()
|
|
, SourceFiles()
|
|
, Lines()
|
|
, LabelIDList()
|
|
, ScopeMap()
|
|
, RootScope(NULL)
|
|
, FrameMoves()
|
|
, LandingPads()
|
|
{}
|
|
MachineModuleInfo::~MachineModuleInfo() {
|
|
|
|
}
|
|
|
|
/// doInitialization - Initialize the state for a new module.
|
|
///
|
|
bool MachineModuleInfo::doInitialization() {
|
|
return false;
|
|
}
|
|
|
|
/// doFinalization - Tear down the state after completion of a module.
|
|
///
|
|
bool MachineModuleInfo::doFinalization() {
|
|
return false;
|
|
}
|
|
|
|
/// BeginFunction - Begin gathering function meta information.
|
|
///
|
|
void MachineModuleInfo::BeginFunction(MachineFunction *MF) {
|
|
// Coming soon.
|
|
}
|
|
|
|
/// EndFunction - Discard function meta information.
|
|
///
|
|
void MachineModuleInfo::EndFunction() {
|
|
// Clean up scope information.
|
|
if (RootScope) {
|
|
delete RootScope;
|
|
ScopeMap.clear();
|
|
RootScope = NULL;
|
|
}
|
|
|
|
// Clean up line info.
|
|
Lines.clear();
|
|
|
|
// Clean up frame info.
|
|
FrameMoves.clear();
|
|
|
|
// Clean up exception info.
|
|
LandingPads.clear();
|
|
TypeInfos.clear();
|
|
}
|
|
|
|
/// getDescFor - Convert a Value to a debug information descriptor.
|
|
///
|
|
// FIXME - use new Value type when available.
|
|
DebugInfoDesc *MachineModuleInfo::getDescFor(Value *V) {
|
|
return DR.Deserialize(V);
|
|
}
|
|
|
|
/// Verify - Verify that a Value is debug information descriptor.
|
|
///
|
|
bool MachineModuleInfo::Verify(Value *V) {
|
|
return VR.Verify(V);
|
|
}
|
|
|
|
/// AnalyzeModule - Scan the module for global debug information.
|
|
///
|
|
void MachineModuleInfo::AnalyzeModule(Module &M) {
|
|
SetupCompileUnits(M);
|
|
}
|
|
|
|
/// needsFrameInfo - Returns true if we need to gather callee-saved register
|
|
/// move info for the frame.
|
|
bool MachineModuleInfo::needsFrameInfo() const {
|
|
return hasDebugInfo() || ExceptionHandling;
|
|
}
|
|
|
|
/// SetupCompileUnits - Set up the unique vector of compile units.
|
|
///
|
|
void MachineModuleInfo::SetupCompileUnits(Module &M) {
|
|
std::vector<CompileUnitDesc *>CU = getAnchoredDescriptors<CompileUnitDesc>(M);
|
|
|
|
for (unsigned i = 0, N = CU.size(); i < N; i++) {
|
|
CompileUnits.insert(CU[i]);
|
|
}
|
|
}
|
|
|
|
/// getCompileUnits - Return a vector of debug compile units.
|
|
///
|
|
const UniqueVector<CompileUnitDesc *> MachineModuleInfo::getCompileUnits()const{
|
|
return CompileUnits;
|
|
}
|
|
|
|
/// getGlobalVariablesUsing - Return all of the GlobalVariables that use the
|
|
/// named GlobalVariable.
|
|
std::vector<GlobalVariable*>
|
|
MachineModuleInfo::getGlobalVariablesUsing(Module &M,
|
|
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 MachineModuleInfo::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 MachineModuleInfo::RecordSource(const std::string &Directory,
|
|
const std::string &Source) {
|
|
unsigned DirectoryID = Directories.insert(Directory);
|
|
return SourceFiles.insert(SourceFileInfo(DirectoryID, Source));
|
|
}
|
|
unsigned MachineModuleInfo::RecordSource(const CompileUnitDesc *CompileUnit) {
|
|
return RecordSource(CompileUnit->getDirectory(),
|
|
CompileUnit->getFileName());
|
|
}
|
|
|
|
/// RecordRegionStart - Indicate the start of a region.
|
|
///
|
|
unsigned MachineModuleInfo::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 MachineModuleInfo::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 MachineModuleInfo::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 *MachineModuleInfo::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;
|
|
}
|
|
|
|
//===-EH-------------------------------------------------------------------===//
|
|
|
|
/// getOrCreateLandingPadInfo - Find or create an LandingPadInfo for the
|
|
/// specified MachineBasicBlock.
|
|
LandingPadInfo &MachineModuleInfo::getOrCreateLandingPadInfo
|
|
(MachineBasicBlock *LandingPad) {
|
|
unsigned N = LandingPads.size();
|
|
for (unsigned i = 0; i < N; ++i) {
|
|
LandingPadInfo &UI = LandingPads[i];
|
|
if (UI.LandingPadBlock == LandingPad)
|
|
return UI;
|
|
}
|
|
|
|
LandingPads.push_back(LandingPadInfo(LandingPad));
|
|
return LandingPads[N];
|
|
}
|
|
|
|
/// addInvoke - Provide the begin and end labels of an invoke style call and
|
|
/// associate it with a try landing pad block.
|
|
void MachineModuleInfo::addInvoke(MachineBasicBlock *LandingPad,
|
|
unsigned BeginLabel, unsigned EndLabel) {
|
|
LandingPadInfo &UI = getOrCreateLandingPadInfo(LandingPad);
|
|
if (!UI.BeginLabel) UI.BeginLabel = BeginLabel;
|
|
UI.EndLabel = EndLabel;
|
|
}
|
|
|
|
/// addLandingPad - Provide the label of a try LandingPad block.
|
|
///
|
|
unsigned MachineModuleInfo::addLandingPad(MachineBasicBlock *LandingPad) {
|
|
unsigned LandingPadLabel = NextLabelID();
|
|
LandingPadInfo &UI = getOrCreateLandingPadInfo(LandingPad);
|
|
UI.LandingPadLabel = LandingPadLabel;
|
|
return LandingPadLabel;
|
|
}
|
|
|
|
/// addPersonality - Provide the personality function for the exception
|
|
/// information.
|
|
void MachineModuleInfo::addPersonality(MachineBasicBlock *LandingPad,
|
|
Function *Personality) {
|
|
LandingPadInfo &UI = getOrCreateLandingPadInfo(LandingPad);
|
|
UI.Personality = Personality;
|
|
}
|
|
|
|
/// addCatchTypeInfo - Provide the catch typeinfo for a landing pad.
|
|
///
|
|
void MachineModuleInfo::addCatchTypeInfo(MachineBasicBlock *LandingPad,
|
|
std::vector<GlobalVariable *> &TyInfo) {
|
|
LandingPadInfo &UI = getOrCreateLandingPadInfo(LandingPad);
|
|
for (unsigned N = TyInfo.size(); N; --N)
|
|
UI.TypeIds.push_back(getTypeIDFor(TyInfo[N - 1]));
|
|
}
|
|
|
|
/// TidyLandingPads - Remap landing pad labels and remove any deleted landing
|
|
/// pads.
|
|
void MachineModuleInfo::TidyLandingPads() {
|
|
for (unsigned i = 0; i != LandingPads.size(); ) {
|
|
LandingPadInfo &LandingPad = LandingPads[i];
|
|
LandingPad.BeginLabel = MappedLabel(LandingPad.BeginLabel);
|
|
LandingPad.EndLabel = MappedLabel(LandingPad.EndLabel);
|
|
LandingPad.LandingPadLabel = MappedLabel(LandingPad.LandingPadLabel);
|
|
|
|
if (!LandingPad.BeginLabel ||
|
|
!LandingPad.EndLabel ||
|
|
!LandingPad.LandingPadLabel) {
|
|
LandingPads.erase(LandingPads.begin() + i);
|
|
continue;
|
|
}
|
|
|
|
++i;
|
|
}
|
|
}
|
|
|
|
/// getTypeIDFor - Return the type id for the specified typeinfo. This is
|
|
/// function wide.
|
|
unsigned MachineModuleInfo::getTypeIDFor(GlobalVariable *TI) {
|
|
for (unsigned i = 0, N = TypeInfos.size(); i != N; ++i)
|
|
if (TypeInfos[i] == TI) return i + 1;
|
|
|
|
TypeInfos.push_back(TI);
|
|
return TypeInfos.size();
|
|
}
|
|
|
|
/// getLandingPadInfos - Return a reference to the landing pad info for the
|
|
/// current function.
|
|
Function *MachineModuleInfo::getPersonality() const {
|
|
return !LandingPads.empty() ? LandingPads[0].Personality : NULL;
|
|
}
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
/// DebugLabelFolding pass - This pass prunes out redundant labels. This allows
|
|
/// a info consumer 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 "Label Folder"; }
|
|
};
|
|
|
|
bool DebugLabelFolder::runOnMachineFunction(MachineFunction &MF) {
|
|
// Get machine module info.
|
|
MachineModuleInfo *MMI = getAnalysisToUpdate<MachineModuleInfo>();
|
|
if (!MMI) return false;
|
|
// Get target instruction info.
|
|
const TargetInstrInfo *TII = MF.getTarget().getInstrInfo();
|
|
if (!TII) 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 label.
|
|
if ((unsigned)I->getOpcode() == TargetInstrInfo::LABEL) {
|
|
// 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.
|
|
MMI->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(); }
|
|
|
|
}
|
|
|