It's not necessary to do rounding for alloca operations when the requested
alignment is equal to the stack alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineModuleInfo.cpp b/lib/CodeGen/MachineModuleInfo.cpp
new file mode 100644
index 0000000..77fb643
--- /dev/null
+++ b/lib/CodeGen/MachineModuleInfo.cpp
@@ -0,0 +1,1905 @@
+//===-- 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");
+}
+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()
+, LabelIDList()
+, ScopeMap()
+, RootScope(NULL)
+, FrameMoves()
+, LandingPads()
+, Personalities()
+, CallsEHReturn(0)
+, CallsUnwindInit(0)
+{
+ // Always emit "no personality" info
+ Personalities.push_back(NULL);
+}
+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();
+ FilterIds.clear();
+ FilterEnds.clear();
+ CallsEHReturn = 0;
+ CallsUnwindInit = 0;
+}
+
+/// 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 &LP = LandingPads[i];
+ if (LP.LandingPadBlock == LandingPad)
+ return LP;
+ }
+
+ 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 &LP = getOrCreateLandingPadInfo(LandingPad);
+ LP.BeginLabels.push_back(BeginLabel);
+ LP.EndLabels.push_back(EndLabel);
+}
+
+/// addLandingPad - Provide the label of a try LandingPad block.
+///
+unsigned MachineModuleInfo::addLandingPad(MachineBasicBlock *LandingPad) {
+ unsigned LandingPadLabel = NextLabelID();
+ LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
+ LP.LandingPadLabel = LandingPadLabel;
+ return LandingPadLabel;
+}
+
+/// addPersonality - Provide the personality function for the exception
+/// information.
+void MachineModuleInfo::addPersonality(MachineBasicBlock *LandingPad,
+ Function *Personality) {
+ LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
+ LP.Personality = Personality;
+
+ for (unsigned i = 0; i < Personalities.size(); ++i)
+ if (Personalities[i] == Personality)
+ return;
+
+ Personalities.push_back(Personality);
+}
+
+/// addCatchTypeInfo - Provide the catch typeinfo for a landing pad.
+///
+void MachineModuleInfo::addCatchTypeInfo(MachineBasicBlock *LandingPad,
+ std::vector<GlobalVariable *> &TyInfo) {
+ LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
+ for (unsigned N = TyInfo.size(); N; --N)
+ LP.TypeIds.push_back(getTypeIDFor(TyInfo[N - 1]));
+}
+
+/// addFilterTypeInfo - Provide the filter typeinfo for a landing pad.
+///
+void MachineModuleInfo::addFilterTypeInfo(MachineBasicBlock *LandingPad,
+ std::vector<GlobalVariable *> &TyInfo) {
+ LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
+ 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));
+}
+
+/// 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.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.
+ 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);
+ continue;
+ }
+
+ LandingPad.BeginLabels[j] = BeginLabel;
+ LandingPad.EndLabels[j] = EndLabel;
+ ++j;
+ }
+
+ ++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();
+}
+
+/// getFilterIDFor - Return the filter id for the specified typeinfos. This is
+/// function wide.
+int MachineModuleInfo::getFilterIDFor(std::vector<unsigned> &TyIds) {
+ // 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;
+}
+
+/// getPersonality - Return the personality function for the current function.
+Function *MachineModuleInfo::getPersonality() const {
+ // FIXME: Until PR1414 will be fixed, we're using 1 personality function per
+ // function
+ return !LandingPads.empty() ? LandingPads[0].Personality : NULL;
+}
+
+/// getPersonalityIndex - Return unique index for current personality
+/// function. NULL personality function should always get zero index.
+unsigned MachineModuleInfo::getPersonalityIndex() const {
+ const Function* Personality = NULL;
+
+ // Scan landing pads. If there is at least one non-NULL personality - use it.
+ for (unsigned i = 0; i != LandingPads.size(); ++i)
+ if (LandingPads[i].Personality) {
+ Personality = LandingPads[i].Personality;
+ break;
+ }
+
+ for (unsigned i = 0; i < Personalities.size(); ++i) {
+ if (Personalities[i] == Personality)
+ return i;
+ }
+
+ // This should never happen
+ assert(0 && "Personality function should be set!");
+ return 0;
+}
+
+//===----------------------------------------------------------------------===//
+/// 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 {
+ static char ID;
+ DebugLabelFolder() : MachineFunctionPass((intptr_t)&ID) {}
+
+ virtual bool runOnMachineFunction(MachineFunction &MF);
+ virtual const char *getPassName() const { return "Label Folder"; }
+};
+
+char DebugLabelFolder::ID = 0;
+
+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(); }
+
+}
+