1//==---- CodeGenABITypes.h - Convert Clang types to LLVM types for ABI -----==// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// CodeGenABITypes is a simple interface for getting LLVM types for 11// the parameters and the return value of a function given the Clang 12// types. 13// 14// The class is implemented as a public wrapper around the private 15// CodeGenTypes class in lib/CodeGen. 16// 17// It allows other clients, like LLDB, to determine the LLVM types that are 18// actually used in function calls, which makes it possible to then determine 19// the acutal ABI locations (e.g. registers, stack locations, etc.) that 20// these parameters are stored in. 21// 22//===----------------------------------------------------------------------===// 23 24#ifndef LLVM_CLANG_CODEGEN_ABITYPES_H 25#define LLVM_CLANG_CODEGEN_ABITYPES_H 26 27#include "clang/AST/CanonicalType.h" 28#include "clang/AST/Type.h" 29#include "clang/CodeGen/CGFunctionInfo.h" 30 31namespace llvm { 32 class DataLayout; 33 class Module; 34} 35 36namespace clang { 37class ASTContext; 38class CXXRecordDecl; 39class CodeGenOptions; 40class DiagnosticsEngine; 41class ObjCMethodDecl; 42 43namespace CodeGen { 44class CGFunctionInfo; 45class CodeGenModule; 46 47class CodeGenABITypes 48{ 49public: 50 CodeGenABITypes(ASTContext &C, llvm::Module &M, const llvm::DataLayout &TD); 51 ~CodeGenABITypes(); 52 53 /// These methods all forward to methods in the private implementation class 54 /// CodeGenTypes. 55 56 const CGFunctionInfo &arrangeObjCMessageSendSignature( 57 const ObjCMethodDecl *MD, 58 QualType receiverType); 59 const CGFunctionInfo &arrangeFreeFunctionType( 60 CanQual<FunctionProtoType> Ty); 61 const CGFunctionInfo &arrangeFreeFunctionType( 62 CanQual<FunctionNoProtoType> Ty); 63 const CGFunctionInfo &arrangeCXXMethodType(const CXXRecordDecl *RD, 64 const FunctionProtoType *FTP); 65 const CGFunctionInfo &arrangeFreeFunctionCall(CanQualType returnType, 66 ArrayRef<CanQualType> argTypes, 67 FunctionType::ExtInfo info, 68 RequiredArgs args); 69 70private: 71 /// Default CodeGenOptions object used to initialize the 72 /// CodeGenModule and otherwise not used. More specifically, it is 73 /// not used in ABI type generation, so none of the options matter. 74 CodeGenOptions *CGO; 75 76 /// The CodeGenModule we use get to the CodeGenTypes object. 77 CodeGen::CodeGenModule *CGM; 78}; 79 80} // end namespace CodeGen 81} // end namespace clang 82 83#endif 84