| //===--- CGDebugInfo.h - DebugInfo for LLVM CodeGen -------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This is the source level debug info generator for llvm translation. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef CLANG_CODEGEN_CGDEBUGINFO_H |
| #define CLANG_CODEGEN_CGDEBUGINFO_H |
| |
| #include "clang/AST/Type.h" |
| #include "clang/AST/Expr.h" |
| #include "clang/Basic/SourceLocation.h" |
| #include "llvm/ADT/DenseMap.h" |
| #include "llvm/Analysis/DebugInfo.h" |
| #include "llvm/Analysis/DIBuilder.h" |
| #include "llvm/Support/ValueHandle.h" |
| #include "llvm/Support/Allocator.h" |
| |
| #include "CGBuilder.h" |
| |
| namespace llvm { |
| class MDNode; |
| } |
| |
| namespace clang { |
| class VarDecl; |
| class ObjCInterfaceDecl; |
| class ClassTemplateSpecializationDecl; |
| class GlobalDecl; |
| |
| namespace CodeGen { |
| class CodeGenModule; |
| class CodeGenFunction; |
| class CGBlockInfo; |
| |
| /// CGDebugInfo - This class gathers all debug information during compilation |
| /// and is responsible for emitting to llvm globals or pass directly to |
| /// the backend. |
| class CGDebugInfo { |
| CodeGenModule &CGM; |
| llvm::DIBuilder DBuilder; |
| llvm::DICompileUnit TheCU; |
| SourceLocation CurLoc, PrevLoc; |
| llvm::DIType VTablePtrType; |
| |
| /// TypeCache - Cache of previously constructed Types. |
| llvm::DenseMap<void *, llvm::WeakVH> TypeCache; |
| |
| bool BlockLiteralGenericSet; |
| llvm::DIType BlockLiteralGeneric; |
| |
| std::vector<llvm::TrackingVH<llvm::MDNode> > RegionStack; |
| llvm::DenseMap<const Decl *, llvm::WeakVH> RegionMap; |
| // FnBeginRegionCount - Keep track of RegionStack counter at the beginning |
| // of a function. This is used to pop unbalanced regions at the end of a |
| // function. |
| std::vector<unsigned> FnBeginRegionCount; |
| |
| /// LineDirectiveFiles - This stack is used to keep track of |
| /// scopes introduced by #line directives. |
| std::vector<const char *> LineDirectiveFiles; |
| |
| /// DebugInfoNames - This is a storage for names that are |
| /// constructed on demand. For example, C++ destructors, C++ operators etc.. |
| llvm::BumpPtrAllocator DebugInfoNames; |
| llvm::StringRef CWDName; |
| |
| llvm::DenseMap<const char *, llvm::WeakVH> DIFileCache; |
| llvm::DenseMap<const FunctionDecl *, llvm::WeakVH> SPCache; |
| llvm::DenseMap<const NamespaceDecl *, llvm::WeakVH> NameSpaceCache; |
| |
| /// Helper functions for getOrCreateType. |
| llvm::DIType CreateType(const BuiltinType *Ty); |
| llvm::DIType CreateType(const ComplexType *Ty); |
| llvm::DIType CreateQualifiedType(QualType Ty, llvm::DIFile F); |
| llvm::DIType CreateType(const TypedefType *Ty, llvm::DIFile F); |
| llvm::DIType CreateType(const ObjCObjectPointerType *Ty, |
| llvm::DIFile F); |
| llvm::DIType CreateType(const PointerType *Ty, llvm::DIFile F); |
| llvm::DIType CreateType(const BlockPointerType *Ty, llvm::DIFile F); |
| llvm::DIType CreateType(const FunctionType *Ty, llvm::DIFile F); |
| llvm::DIType CreateType(const TagType *Ty); |
| llvm::DIType CreateType(const RecordType *Ty); |
| llvm::DIType CreateType(const ObjCInterfaceType *Ty, llvm::DIFile F); |
| llvm::DIType CreateType(const ObjCObjectType *Ty, llvm::DIFile F); |
| llvm::DIType CreateType(const VectorType *Ty, llvm::DIFile F); |
| llvm::DIType CreateType(const ArrayType *Ty, llvm::DIFile F); |
| llvm::DIType CreateType(const LValueReferenceType *Ty, llvm::DIFile F); |
| llvm::DIType CreateType(const RValueReferenceType *Ty, llvm::DIFile Unit); |
| llvm::DIType CreateType(const MemberPointerType *Ty, llvm::DIFile F); |
| llvm::DIType CreateEnumType(const EnumDecl *ED); |
| llvm::DIType getOrCreateMethodType(const CXXMethodDecl *Method, |
| llvm::DIFile F); |
| llvm::DIType getOrCreateFunctionType(const Decl *D, QualType FnType, |
| llvm::DIFile F); |
| llvm::DIType getOrCreateVTablePtrType(llvm::DIFile F); |
| llvm::DINameSpace getOrCreateNameSpace(const NamespaceDecl *N); |
| llvm::DIType CreatePointeeType(QualType PointeeTy, llvm::DIFile F); |
| llvm::DIType CreatePointerLikeType(unsigned Tag, |
| const Type *Ty, QualType PointeeTy, |
| llvm::DIFile F); |
| |
| llvm::DISubprogram CreateCXXMemberFunction(const CXXMethodDecl *Method, |
| llvm::DIFile F, |
| llvm::DIType RecordTy); |
| |
| void CollectCXXMemberFunctions(const CXXRecordDecl *Decl, |
| llvm::DIFile F, |
| llvm::SmallVectorImpl<llvm::Value *> &E, |
| llvm::DIType T); |
| |
| void CollectCXXFriends(const CXXRecordDecl *Decl, |
| llvm::DIFile F, |
| llvm::SmallVectorImpl<llvm::Value *> &EltTys, |
| llvm::DIType RecordTy); |
| |
| void CollectCXXBases(const CXXRecordDecl *Decl, |
| llvm::DIFile F, |
| llvm::SmallVectorImpl<llvm::Value *> &EltTys, |
| llvm::DIType RecordTy); |
| |
| llvm::DIArray |
| CollectTemplateParams(const TemplateParameterList *TPList, |
| const TemplateArgumentList &TAList, |
| llvm::DIFile Unit); |
| llvm::DIArray |
| CollectFunctionTemplateParams(const FunctionDecl *FD, llvm::DIFile Unit); |
| llvm::DIArray |
| CollectCXXTemplateParams(const ClassTemplateSpecializationDecl *TS, |
| llvm::DIFile F); |
| |
| llvm::DIType createFieldType(llvm::StringRef name, QualType type, |
| Expr *bitWidth, SourceLocation loc, |
| AccessSpecifier AS, uint64_t offsetInBits, |
| llvm::DIFile tunit); |
| void CollectRecordFields(const RecordDecl *Decl, llvm::DIFile F, |
| llvm::SmallVectorImpl<llvm::Value *> &E); |
| |
| void CollectVTableInfo(const CXXRecordDecl *Decl, |
| llvm::DIFile F, |
| llvm::SmallVectorImpl<llvm::Value *> &EltTys); |
| |
| public: |
| CGDebugInfo(CodeGenModule &CGM); |
| ~CGDebugInfo(); |
| |
| /// setLocation - Update the current source location. If \arg loc is |
| /// invalid it is ignored. |
| void setLocation(SourceLocation Loc); |
| |
| /// EmitStopPoint - Emit a call to llvm.dbg.stoppoint to indicate a change of |
| /// source line. |
| void EmitStopPoint(CGBuilderTy &Builder); |
| |
| /// EmitFunctionStart - Emit a call to llvm.dbg.function.start to indicate |
| /// start of a new function. |
| void EmitFunctionStart(GlobalDecl GD, QualType FnType, |
| llvm::Function *Fn, CGBuilderTy &Builder); |
| |
| /// EmitFunctionEnd - Constructs the debug code for exiting a function. |
| void EmitFunctionEnd(CGBuilderTy &Builder); |
| |
| /// UpdateLineDirectiveRegion - Update region stack only if #line directive |
| /// has introduced scope change. |
| void UpdateLineDirectiveRegion(CGBuilderTy &Builder); |
| |
| /// UpdateCompletedType - Update type cache because the type is now |
| /// translated. |
| void UpdateCompletedType(const TagDecl *TD); |
| |
| /// EmitRegionStart - Emit a call to llvm.dbg.region.start to indicate start |
| /// of a new block. |
| void EmitRegionStart(CGBuilderTy &Builder); |
| |
| /// EmitRegionEnd - Emit call to llvm.dbg.region.end to indicate end of a |
| /// block. |
| void EmitRegionEnd(CGBuilderTy &Builder); |
| |
| /// EmitDeclareOfAutoVariable - Emit call to llvm.dbg.declare for an automatic |
| /// variable declaration. |
| void EmitDeclareOfAutoVariable(const VarDecl *Decl, llvm::Value *AI, |
| CGBuilderTy &Builder); |
| |
| /// EmitDeclareOfBlockDeclRefVariable - Emit call to llvm.dbg.declare for an |
| /// imported variable declaration in a block. |
| void EmitDeclareOfBlockDeclRefVariable(const VarDecl *variable, |
| llvm::Value *storage, |
| CGBuilderTy &Builder, |
| const CGBlockInfo &blockInfo); |
| |
| /// EmitDeclareOfArgVariable - Emit call to llvm.dbg.declare for an argument |
| /// variable declaration. |
| void EmitDeclareOfArgVariable(const VarDecl *Decl, llvm::Value *AI, |
| unsigned ArgNo, CGBuilderTy &Builder); |
| |
| /// EmitDeclareOfBlockLiteralArgVariable - Emit call to |
| /// llvm.dbg.declare for the block-literal argument to a block |
| /// invocation function. |
| void EmitDeclareOfBlockLiteralArgVariable(const CGBlockInfo &block, |
| llvm::Value *addr, |
| CGBuilderTy &Builder); |
| |
| /// EmitGlobalVariable - Emit information about a global variable. |
| void EmitGlobalVariable(llvm::GlobalVariable *GV, const VarDecl *Decl); |
| |
| /// EmitGlobalVariable - Emit information about an objective-c interface. |
| void EmitGlobalVariable(llvm::GlobalVariable *GV, ObjCInterfaceDecl *Decl); |
| |
| /// EmitGlobalVariable - Emit global variable's debug info. |
| void EmitGlobalVariable(const ValueDecl *VD, llvm::Constant *Init); |
| |
| /// getOrCreateRecordType - Emit record type's standalone debug info. |
| llvm::DIType getOrCreateRecordType(QualType Ty, SourceLocation L); |
| private: |
| /// EmitDeclare - Emit call to llvm.dbg.declare for a variable declaration. |
| void EmitDeclare(const VarDecl *decl, unsigned Tag, llvm::Value *AI, |
| unsigned ArgNo, CGBuilderTy &Builder); |
| |
| // EmitTypeForVarWithBlocksAttr - Build up structure info for the byref. |
| // See BuildByRefType. |
| llvm::DIType EmitTypeForVarWithBlocksAttr(const ValueDecl *VD, |
| uint64_t *OffSet); |
| |
| /// getContextDescriptor - Get context info for the decl. |
| llvm::DIDescriptor getContextDescriptor(const Decl *Decl); |
| |
| /// getCurrentDirname - Return current directory name. |
| llvm::StringRef getCurrentDirname(); |
| |
| /// CreateCompileUnit - Create new compile unit. |
| void CreateCompileUnit(); |
| |
| /// getOrCreateFile - Get the file debug info descriptor for the input |
| /// location. |
| llvm::DIFile getOrCreateFile(SourceLocation Loc); |
| |
| /// getOrCreateMainFile - Get the file info for main compile unit. |
| llvm::DIFile getOrCreateMainFile(); |
| |
| /// getOrCreateType - Get the type from the cache or create a new type if |
| /// necessary. |
| llvm::DIType getOrCreateType(QualType Ty, llvm::DIFile F); |
| |
| /// CreateTypeNode - Create type metadata for a source language type. |
| llvm::DIType CreateTypeNode(QualType Ty, llvm::DIFile F); |
| |
| /// CreateMemberType - Create new member and increase Offset by FType's size. |
| llvm::DIType CreateMemberType(llvm::DIFile Unit, QualType FType, |
| llvm::StringRef Name, uint64_t *Offset); |
| |
| /// getFunctionDeclaration - Return debug info descriptor to describe method |
| /// declaration for the given method definition. |
| llvm::DISubprogram getFunctionDeclaration(const Decl *D); |
| |
| /// getFunctionName - Get function name for the given FunctionDecl. If the |
| /// name is constructred on demand (e.g. C++ destructor) then the name |
| /// is stored on the side. |
| llvm::StringRef getFunctionName(const FunctionDecl *FD); |
| |
| /// getObjCMethodName - Returns the unmangled name of an Objective-C method. |
| /// This is the display name for the debugging info. |
| llvm::StringRef getObjCMethodName(const ObjCMethodDecl *FD); |
| |
| /// getSelectorName - Return selector name. This is used for debugging |
| /// info. |
| llvm::StringRef getSelectorName(Selector S); |
| |
| /// getClassName - Get class name including template argument list. |
| llvm::StringRef getClassName(RecordDecl *RD); |
| |
| /// getVTableName - Get vtable name for the given Class. |
| llvm::StringRef getVTableName(const CXXRecordDecl *Decl); |
| |
| /// getLineNumber - Get line number for the location. If location is invalid |
| /// then use current location. |
| unsigned getLineNumber(SourceLocation Loc); |
| |
| /// getColumnNumber - Get column number for the location. If location is |
| /// invalid then use current location. |
| unsigned getColumnNumber(SourceLocation Loc); |
| }; |
| } // namespace CodeGen |
| } // namespace clang |
| |
| |
| #endif |