clang  3.7.0
CodeGenABITypes.h
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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_CODEGENABITYPES_H
25 #define LLVM_CLANG_CODEGEN_CODEGENABITYPES_H
26 
28 #include "clang/AST/Type.h"
30 
31 namespace llvm {
32  class DataLayout;
33  class Module;
34 }
35 
36 namespace clang {
37 class ASTContext;
38 class CXXRecordDecl;
39 class CodeGenOptions;
40 class CoverageSourceInfo;
41 class DiagnosticsEngine;
42 class HeaderSearchOptions;
43 class ObjCMethodDecl;
44 class PreprocessorOptions;
45 
46 namespace CodeGen {
47 class CGFunctionInfo;
48 class CodeGenModule;
49 
51 {
52 public:
53  CodeGenABITypes(ASTContext &C, llvm::Module &M, const llvm::DataLayout &TD,
54  CoverageSourceInfo *CoverageInfo = nullptr);
56 
57  /// These methods all forward to methods in the private implementation class
58  /// CodeGenTypes.
59 
61  const ObjCMethodDecl *MD,
62  QualType receiverType);
68  const FunctionProtoType *FTP);
70  ArrayRef<CanQualType> argTypes,
72  RequiredArgs args);
73 
74 private:
75  /// Default CodeGenOptions object used to initialize the
76  /// CodeGenModule and otherwise not used. More specifically, it is
77  /// not used in ABI type generation, so none of the options matter.
78  CodeGenOptions *CGO;
81 
82  /// The CodeGenModule we use get to the CodeGenTypes object.
84 };
85 
86 } // end namespace CodeGen
87 } // end namespace clang
88 
89 #endif
const CGFunctionInfo & arrangeFreeFunctionCall(CanQualType returnType, ArrayRef< CanQualType > argTypes, FunctionType::ExtInfo info, RequiredArgs args)
Stores additional source code information like skipped ranges which is required by the coverage mappi...
const CGFunctionInfo & arrangeObjCMessageSendSignature(const ObjCMethodDecl *MD, QualType receiverType)
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:89
const CGFunctionInfo & arrangeFreeFunctionType(CanQual< FunctionProtoType > Ty)
const CGFunctionInfo & arrangeCXXMethodType(const CXXRecordDecl *RD, const FunctionProtoType *FTP)
CodeGenABITypes(ASTContext &C, llvm::Module &M, const llvm::DataLayout &TD, CoverageSourceInfo *CoverageInfo=nullptr)
Represents a C++ struct/union/class.
Definition: DeclCXX.h:285