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Diffstat (limited to 'contrib/llvm/tools/clang/lib/CodeGen/CGDebugInfo.h')
| -rw-r--r-- | contrib/llvm/tools/clang/lib/CodeGen/CGDebugInfo.h | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/contrib/llvm/tools/clang/lib/CodeGen/CGDebugInfo.h b/contrib/llvm/tools/clang/lib/CodeGen/CGDebugInfo.h new file mode 100644 index 0000000..620a5f2 --- /dev/null +++ b/contrib/llvm/tools/clang/lib/CodeGen/CGDebugInfo.h @@ -0,0 +1,224 @@ +//===--- 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/Support/ValueHandle.h" +#include "llvm/Support/Allocator.h" + +#include "CGBuilder.h" + +namespace llvm { + class MDNode; +} + +namespace clang { + class VarDecl; + class ObjCInterfaceDecl; + +namespace CodeGen { + class CodeGenModule; + class CodeGenFunction; + class GlobalDecl; + +/// 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::DIFactory DebugFactory; + llvm::DICompileUnit TheCU; + SourceLocation CurLoc, PrevLoc; + llvm::DIType VTablePtrType; + /// FwdDeclCount - This counter is used to ensure unique names for forward + /// record decls. + unsigned FwdDeclCount; + + /// 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; + + /// DebugInfoNames - This is a storage for names that are + /// constructed on demand. For example, C++ destructors, C++ operators etc.. + llvm::BumpPtrAllocator DebugInfoNames; + + 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::DIFile F); + llvm::DIType CreateType(const ComplexType *Ty, llvm::DIFile F); + 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::DIFile F); + llvm::DIType CreateType(const RecordType *Ty, llvm::DIFile F); + llvm::DIType CreateType(const ObjCInterfaceType *Ty, llvm::DIFile F); + llvm::DIType CreateType(const ObjCObjectType *Ty, llvm::DIFile F); + llvm::DIType CreateType(const EnumType *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 MemberPointerType *Ty, llvm::DIFile F); + llvm::DIType getOrCreateMethodType(const CXXMethodDecl *Method, + llvm::DIFile F); + llvm::DIType getOrCreateVTablePtrType(llvm::DIFile F); + llvm::DINameSpace getOrCreateNameSpace(const NamespaceDecl *N, + llvm::DIDescriptor Unit); + + llvm::DIType CreatePointerLikeType(unsigned Tag, + const Type *Ty, QualType PointeeTy, + llvm::DIFile F); + + llvm::DISubprogram CreateCXXMemberFunction(const CXXMethodDecl *Method, + llvm::DIFile F, + llvm::DICompositeType &RecordTy); + + void CollectCXXMemberFunctions(const CXXRecordDecl *Decl, + llvm::DIFile F, + llvm::SmallVectorImpl<llvm::DIDescriptor> &E, + llvm::DICompositeType &T); + void CollectCXXBases(const CXXRecordDecl *Decl, + llvm::DIFile F, + llvm::SmallVectorImpl<llvm::DIDescriptor> &EltTys, + llvm::DICompositeType &RecordTy); + + + void CollectRecordFields(const RecordDecl *Decl, llvm::DIFile F, + llvm::SmallVectorImpl<llvm::DIDescriptor> &E); + + void CollectVTableInfo(const CXXRecordDecl *Decl, + llvm::DIFile F, + llvm::SmallVectorImpl<llvm::DIDescriptor> &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(llvm::Function *Fn, 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); + + /// EmitRegionStart - Emit a call to llvm.dbg.region.start to indicate start + /// of a new block. + void EmitRegionStart(llvm::Function *Fn, CGBuilderTy &Builder); + + /// EmitRegionEnd - Emit call to llvm.dbg.region.end to indicate end of a + /// block. + void EmitRegionEnd(llvm::Function *Fn, 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 BlockDeclRefExpr *BDRE, + llvm::Value *AI, + CGBuilderTy &Builder, + CodeGenFunction *CGF); + + /// EmitDeclareOfArgVariable - Emit call to llvm.dbg.declare for an argument + /// variable declaration. + void EmitDeclareOfArgVariable(const VarDecl *Decl, llvm::Value *AI, + 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); + +private: + /// EmitDeclare - Emit call to llvm.dbg.declare for a variable declaration. + void EmitDeclare(const VarDecl *decl, unsigned Tag, llvm::Value *AI, + CGBuilderTy &Builder); + + /// EmitDeclare - Emit call to llvm.dbg.declare for a variable declaration. + void EmitDeclare(const BlockDeclRefExpr *BDRE, unsigned Tag, llvm::Value *AI, + CGBuilderTy &Builder, CodeGenFunction *CGF); + + // 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, + llvm::DIDescriptor &CU); + + /// CreateCompileUnit - Create new compile unit. + void CreateCompileUnit(); + + /// getOrCreateFile - Get the file debug info descriptor for the input + /// location. + llvm::DIFile getOrCreateFile(SourceLocation Loc); + + /// 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); + + /// 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); + + /// 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 |
