зеркало из https://github.com/microsoft/clang-1.git
62 строки
2.1 KiB
C++
62 строки
2.1 KiB
C++
//===--- CGVtable.h - Emit LLVM Code for C++ vtables ----------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This contains code dealing with C++ code generation of virtual tables.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef CLANG_CODEGEN_CGVTABLE_H
|
|
#define CLANG_CODEGEN_CGVTABLE_H
|
|
|
|
#include "llvm/ADT/DenseMap.h"
|
|
|
|
namespace clang {
|
|
class CXXMethodDecl;
|
|
class CXXRecordDecl;
|
|
|
|
namespace CodeGen {
|
|
class CodeGenModule;
|
|
|
|
class CGVtableInfo {
|
|
CodeGenModule &CGM;
|
|
|
|
/// MethodVtableIndices - Contains the index (relative to the vtable address
|
|
/// point) where the function pointer for a virtual function is stored.
|
|
typedef llvm::DenseMap<const CXXMethodDecl *, int64_t> MethodVtableIndicesTy;
|
|
MethodVtableIndicesTy MethodVtableIndices;
|
|
|
|
typedef std::pair<const CXXRecordDecl *,
|
|
const CXXRecordDecl *> ClassPairTy;
|
|
|
|
/// VirtualBaseClassIndicies - Contains the index into the vtable where the
|
|
/// offsets for virtual bases of a class are stored.
|
|
typedef llvm::DenseMap<ClassPairTy, int64_t> VirtualBaseClassIndiciesTy;
|
|
VirtualBaseClassIndiciesTy VirtualBaseClassIndicies;
|
|
public:
|
|
CGVtableInfo(CodeGenModule &CGM)
|
|
: CGM(CGM) { }
|
|
|
|
/// getMethodVtableIndex - Return the index (relative to the vtable address
|
|
/// point) where the function pointer for the given virtual function is
|
|
/// stored.
|
|
int64_t getMethodVtableIndex(const CXXMethodDecl *MD);
|
|
|
|
/// getVirtualBaseOffsetIndex - Return the index (relative to the vtable
|
|
/// address point) where the offset of the virtual base that contains the
|
|
/// given Base is stored, otherwise, if no virtual base contains the given
|
|
/// class, return 0. Base must be a virtual base class or an unambigious
|
|
/// base.
|
|
int64_t getVirtualBaseOffsetIndex(const CXXRecordDecl *RD,
|
|
const CXXRecordDecl *VBase);
|
|
};
|
|
|
|
}
|
|
}
|
|
#endif
|