//
// 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.
+// This file 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/Analysis/ValueTracking.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineLocation.h"
+#include "llvm/CodeGen/Passes.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Instructions.h"
#include "llvm/Module.h"
#include "llvm/Support/Dwarf.h"
+#include "llvm/Support/ErrorHandling.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");
-}
+static RegisterPass<MachineModuleInfo>
+X("machinemoduleinfo", "Module Information");
char MachineModuleInfo::ID = 0;
//===----------------------------------------------------------------------===//
-
-/// 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()
-: ImmutablePass((intptr_t)&ID)
-, DR()
-, VR()
-, CompileUnits()
-, Directories()
-, SourceFiles()
-, Lines()
+: ImmutablePass(&ID)
, LabelIDList()
-, ScopeMap()
-, RootScope(NULL)
, FrameMoves()
, LandingPads()
, Personalities()
+, CallsEHReturn(0)
+, CallsUnwindInit(0)
+, DbgInfoAvailable(false)
{
// Always emit "no personality" info
Personalities.push_back(NULL);
/// 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();
LandingPads.clear();
TypeInfos.clear();
FilterIds.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);
+ FilterEnds.clear();
+ CallsEHReturn = 0;
+ CallsUnwindInit = 0;
}
/// AnalyzeModule - Scan the module for global debug information.
///
void MachineModuleInfo::AnalyzeModule(Module &M) {
- SetupCompileUnits(M);
-}
+ // Insert functions in the llvm.used array into UsedFunctions.
+ GlobalVariable *GV = M.getGlobalVariable("llvm.used");
+ if (!GV || !GV->hasInitializer()) return;
-/// needsFrameInfo - Returns true if we need to gather callee-saved register
-/// move info for the frame.
-bool MachineModuleInfo::needsFrameInfo() const {
- return hasDebugInfo() || ExceptionHandling;
-}
+ // Should be an array of 'i8*'.
+ ConstantArray *InitList = dyn_cast<ConstantArray>(GV->getInitializer());
+ if (InitList == 0) return;
-/// 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]);
+ for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i) {
+ if (ConstantExpr *CE = dyn_cast<ConstantExpr>(InitList->getOperand(i)))
+ if (CE->getOpcode() == Instruction::BitCast)
+ if (Function *F = dyn_cast<Function>(CE->getOperand(0)))
+ UsedFunctions.insert(F);
}
}
-/// 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
void MachineModuleInfo::addFilterTypeInfo(MachineBasicBlock *LandingPad,
std::vector<GlobalVariable *> &TyInfo) {
LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
- std::vector<unsigned> IdsInFilter (TyInfo.size());
+ std::vector<unsigned> IdsInFilter(TyInfo.size());
for (unsigned I = 0, E = TyInfo.size(); I != E; ++I)
IdsInFilter[I] = getTypeIDFor(TyInfo[I]);
LP.TypeIds.push_back(getFilterIDFor(IdsInFilter));
}
+/// addCleanup - Add a cleanup action for a landing pad.
+///
+void MachineModuleInfo::addCleanup(MachineBasicBlock *LandingPad) {
+ LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
+ LP.TypeIds.push_back(0);
+}
+
/// TidyLandingPads - Remap landing pad labels and remove any deleted landing
/// pads.
void MachineModuleInfo::TidyLandingPads() {
LandingPadInfo &LandingPad = LandingPads[i];
LandingPad.LandingPadLabel = MappedLabel(LandingPad.LandingPadLabel);
- if (!LandingPad.LandingPadBlock)
- // Must not have cleanups if no landing pad.
- LandingPad.TypeIds.clear();
-
// Special case: we *should* emit LPs with null LP MBB. This indicates
- // "rethrow" case.
+ // "nounwind" case.
if (!LandingPad.LandingPadLabel && LandingPad.LandingPadBlock) {
LandingPads.erase(LandingPads.begin() + i);
continue;
}
-
+
for (unsigned j=0; j != LandingPads[i].BeginLabels.size(); ) {
unsigned BeginLabel = MappedLabel(LandingPad.BeginLabels[j]);
unsigned EndLabel = MappedLabel(LandingPad.EndLabels[j]);
-
-
+
if (!BeginLabel || !EndLabel) {
LandingPad.BeginLabels.erase(LandingPad.BeginLabels.begin() + j);
LandingPad.EndLabels.erase(LandingPad.EndLabels.begin() + j);
LandingPad.EndLabels[j] = EndLabel;
++j;
}
-
+
+ // Remove landing pads with no try-ranges.
+ if (LandingPads[i].BeginLabels.empty()) {
+ LandingPads.erase(LandingPads.begin() + i);
+ continue;
+ }
+
+ // If there is no landing pad, ensure that the list of typeids is empty.
+ // If the only typeid is a cleanup, this is the same as having no typeids.
+ if (!LandingPad.LandingPadBlock ||
+ (LandingPad.TypeIds.size() == 1 && !LandingPad.TypeIds[0]))
+ LandingPad.TypeIds.clear();
+
++i;
}
}
/// getFilterIDFor - Return the filter id for the specified typeinfos. This is
/// function wide.
int MachineModuleInfo::getFilterIDFor(std::vector<unsigned> &TyIds) {
- // TODO: map duplicate filters to the same filter id; a filter equal to the
- // tail of an existing filter also need not be added; re-order filters and
- // filter elements to maximize this kind of sharing.
+ // If the new filter coincides with the tail of an existing filter, then
+ // re-use the existing filter. Folding filters more than this requires
+ // re-ordering filters and/or their elements - probably not worth it.
+ for (std::vector<unsigned>::iterator I = FilterEnds.begin(),
+ E = FilterEnds.end(); I != E; ++I) {
+ unsigned i = *I, j = TyIds.size();
+
+ while (i && j)
+ if (FilterIds[--i] != TyIds[--j])
+ goto try_next;
+
+ if (!j)
+ // The new filter coincides with range [i, end) of the existing filter.
+ return -(1 + i);
+
+try_next:;
+ }
+
+ // Add the new filter.
int FilterID = -(1 + FilterIds.size());
FilterIds.reserve(FilterIds.size() + TyIds.size() + 1);
for (unsigned I = 0, N = TyIds.size(); I != N; ++I)
FilterIds.push_back(TyIds[I]);
+ FilterEnds.push_back(FilterIds.size());
FilterIds.push_back(0); // terminator
return FilterID;
}
}
// This should never happen
- assert(0 && "Personality function should be set!");
+ LLVM_UNREACHABLE("Personality function should be set!");
return 0;
}
struct DebugLabelFolder : public MachineFunctionPass {
static char ID;
- DebugLabelFolder() : MachineFunctionPass((intptr_t)&ID) {}
+ DebugLabelFolder() : MachineFunctionPass(&ID) {}
+
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.addPreservedID(MachineLoopInfoID);
+ AU.addPreservedID(MachineDominatorsID);
+ MachineFunctionPass::getAnalysisUsage(AU);
+ }
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>();
+ MachineModuleInfo *MMI = getAnalysisIfAvailable<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;
// Iterate through instructions.
for (MachineBasicBlock::iterator I = BB->begin(), E = BB->end(); I != E; ) {
// Is it a label.
- if ((unsigned)I->getOpcode() == TargetInstrInfo::LABEL) {
+ if (I->isDebugLabel() && !MMI->isDbgLabelUsed(I->getOperand(0).getImm())){
// The label ID # is always operand #0, an immediate.
unsigned NextLabel = I->getOperand(0).getImm();
projects / oota-llvm.git / blobdiff