Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1 | //===--- CodeGenTypes.h - Type translation for LLVM CodeGen -----*- C++ -*-===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
Chris Lattner | 0bc735f | 2007-12-29 19:59:25 +0000 | [diff] [blame] | 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 10 | // This is the code that handles AST -> LLVM type lowering. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
Chris Lattner | ef52a2f | 2008-02-29 17:10:38 +0000 | [diff] [blame] | 14 | #ifndef CLANG_CODEGEN_CODEGENTYPES_H |
| 15 | #define CLANG_CODEGEN_CODEGENTYPES_H |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 16 | |
Owen Anderson | 47a434f | 2009-08-05 23:18:46 +0000 | [diff] [blame] | 17 | #include "llvm/Module.h" |
Anders Carlsson | c9e2091 | 2007-08-21 00:21:21 +0000 | [diff] [blame] | 18 | #include "llvm/ADT/DenseMap.h" |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 19 | #include <vector> |
| 20 | |
Daniel Dunbar | 62d5c1b | 2008-09-10 07:00:50 +0000 | [diff] [blame] | 21 | #include "CGCall.h" |
Anders Carlsson | b2bcf1c | 2010-02-06 02:44:09 +0000 | [diff] [blame] | 22 | #include "GlobalDecl.h" |
Daniel Dunbar | 62d5c1b | 2008-09-10 07:00:50 +0000 | [diff] [blame] | 23 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 24 | namespace llvm { |
Daniel Dunbar | 45c25ba | 2008-09-10 04:01:49 +0000 | [diff] [blame] | 25 | class FunctionType; |
Anders Carlsson | 4e53328 | 2007-08-17 22:00:32 +0000 | [diff] [blame] | 26 | class Module; |
Chris Lattner | fce71b8 | 2008-04-03 05:50:42 +0000 | [diff] [blame] | 27 | class OpaqueType; |
Devang Patel | 30ec997 | 2007-10-25 18:32:36 +0000 | [diff] [blame] | 28 | class PATypeHolder; |
Devang Patel | 7a4718e | 2007-10-31 20:01:01 +0000 | [diff] [blame] | 29 | class TargetData; |
Daniel Dunbar | 45c25ba | 2008-09-10 04:01:49 +0000 | [diff] [blame] | 30 | class Type; |
Benjamin Kramer | f21efe9 | 2009-08-11 17:46:57 +0000 | [diff] [blame] | 31 | class LLVMContext; |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 32 | } |
| 33 | |
| 34 | namespace clang { |
Daniel Dunbar | 6b1da0e | 2008-10-13 17:02:26 +0000 | [diff] [blame] | 35 | class ABIInfo; |
Chris Lattner | d2d2a11 | 2007-07-14 01:29:45 +0000 | [diff] [blame] | 36 | class ASTContext; |
John McCall | ead608a | 2010-02-26 00:48:12 +0000 | [diff] [blame] | 37 | template <typename> class CanQual; |
Anders Carlsson | f6c56e2 | 2009-11-25 03:15:49 +0000 | [diff] [blame] | 38 | class CXXConstructorDecl; |
| 39 | class CXXDestructorDecl; |
Anders Carlsson | f6f8ae5 | 2009-04-03 22:48:58 +0000 | [diff] [blame] | 40 | class CXXMethodDecl; |
Devang Patel | b1e3989 | 2007-10-23 23:26:46 +0000 | [diff] [blame] | 41 | class FieldDecl; |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 42 | class FunctionProtoType; |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 43 | class ObjCInterfaceDecl; |
| 44 | class ObjCIvarDecl; |
Daniel Dunbar | 45c25ba | 2008-09-10 04:01:49 +0000 | [diff] [blame] | 45 | class PointerType; |
| 46 | class QualType; |
| 47 | class RecordDecl; |
| 48 | class TagDecl; |
| 49 | class TargetInfo; |
| 50 | class Type; |
John McCall | ead608a | 2010-02-26 00:48:12 +0000 | [diff] [blame] | 51 | typedef CanQual<Type> CanQualType; |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 52 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 53 | namespace CodeGen { |
Daniel Dunbar | 2924ade | 2010-03-30 22:26:10 +0000 | [diff] [blame] | 54 | class CGRecordLayout; |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 55 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 56 | /// CodeGenTypes - This class organizes the cross-module state that is used |
| 57 | /// while lowering AST types to LLVM types. |
| 58 | class CodeGenTypes { |
Chris Lattner | d2d2a11 | 2007-07-14 01:29:45 +0000 | [diff] [blame] | 59 | ASTContext &Context; |
Daniel Dunbar | 444be73 | 2009-11-13 05:51:54 +0000 | [diff] [blame] | 60 | const TargetInfo &Target; |
Anders Carlsson | 4e53328 | 2007-08-17 22:00:32 +0000 | [diff] [blame] | 61 | llvm::Module& TheModule; |
Devang Patel | 7a4718e | 2007-10-31 20:01:01 +0000 | [diff] [blame] | 62 | const llvm::TargetData& TheTargetData; |
Anton Korobeynikov | 82d0a41 | 2010-01-10 12:58:08 +0000 | [diff] [blame] | 63 | const ABIInfo& TheABIInfo; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 64 | |
Daniel Dunbar | 6aeae7f | 2009-02-26 19:48:14 +0000 | [diff] [blame] | 65 | llvm::SmallVector<std::pair<QualType, |
Chris Lattner | fce71b8 | 2008-04-03 05:50:42 +0000 | [diff] [blame] | 66 | llvm::OpaqueType *>, 8> PointersToResolve; |
| 67 | |
Daniel Dunbar | efb6d0d | 2008-09-06 02:26:43 +0000 | [diff] [blame] | 68 | llvm::DenseMap<const Type*, llvm::PATypeHolder> TagDeclTypes; |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 69 | |
Eli Friedman | b3b6b9b | 2009-03-05 03:16:41 +0000 | [diff] [blame] | 70 | llvm::DenseMap<const Type*, llvm::PATypeHolder> FunctionTypes; |
| 71 | |
Daniel Dunbar | 412f59b | 2009-04-22 10:28:39 +0000 | [diff] [blame] | 72 | /// The opaque type map for Objective-C interfaces. All direct |
| 73 | /// manipulation is done by the runtime interfaces, which are |
| 74 | /// responsible for coercing to the appropriate type; these opaque |
| 75 | /// types are never refined. |
| 76 | llvm::DenseMap<const ObjCInterfaceType*, const llvm::Type *> InterfaceTypes; |
| 77 | |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 78 | /// CGRecordLayouts - This maps llvm struct type with corresponding |
| 79 | /// record layout info. |
Daniel Dunbar | efb6d0d | 2008-09-06 02:26:43 +0000 | [diff] [blame] | 80 | llvm::DenseMap<const Type*, CGRecordLayout *> CGRecordLayouts; |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 81 | |
Daniel Dunbar | 40a6be6 | 2009-02-03 00:07:12 +0000 | [diff] [blame] | 82 | /// FunctionInfos - Hold memoized CGFunctionInfo results. |
| 83 | llvm::FoldingSet<CGFunctionInfo> FunctionInfos; |
| 84 | |
Lauro Ramos Venancio | 3b8c22d | 2008-01-22 20:17:04 +0000 | [diff] [blame] | 85 | private: |
Chris Lattner | 4581fff | 2008-02-06 05:21:55 +0000 | [diff] [blame] | 86 | /// TypeCache - This map keeps cache of llvm::Types (through PATypeHolder) |
Devang Patel | 30ec997 | 2007-10-25 18:32:36 +0000 | [diff] [blame] | 87 | /// and maps llvm::Types to corresponding clang::Type. llvm::PATypeHolder is |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 88 | /// used instead of llvm::Type because it allows us to bypass potential |
Devang Patel | 30ec997 | 2007-10-25 18:32:36 +0000 | [diff] [blame] | 89 | /// dangling type pointers due to type refinement on llvm side. |
Chris Lattner | 4581fff | 2008-02-06 05:21:55 +0000 | [diff] [blame] | 90 | llvm::DenseMap<Type *, llvm::PATypeHolder> TypeCache; |
Devang Patel | 5825ac2 | 2007-10-25 21:40:12 +0000 | [diff] [blame] | 91 | |
| 92 | /// ConvertNewType - Convert type T into a llvm::Type. Do not use this |
| 93 | /// method directly because it does not do any type caching. This method |
| 94 | /// is available only for ConvertType(). CovertType() is preferred |
| 95 | /// interface to convert type T into a llvm::Type. |
| 96 | const llvm::Type *ConvertNewType(QualType T); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 97 | public: |
Anton Korobeynikov | 82d0a41 | 2010-01-10 12:58:08 +0000 | [diff] [blame] | 98 | CodeGenTypes(ASTContext &Ctx, llvm::Module &M, const llvm::TargetData &TD, |
| 99 | const ABIInfo &Info); |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 100 | ~CodeGenTypes(); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 101 | |
Devang Patel | d9e9ede | 2007-10-31 20:08:22 +0000 | [diff] [blame] | 102 | const llvm::TargetData &getTargetData() const { return TheTargetData; } |
Daniel Dunbar | 444be73 | 2009-11-13 05:51:54 +0000 | [diff] [blame] | 103 | const TargetInfo &getTarget() const { return Target; } |
Devang Patel | 86522b9 | 2007-10-29 20:50:19 +0000 | [diff] [blame] | 104 | ASTContext &getContext() const { return Context; } |
Anton Korobeynikov | 82d0a41 | 2010-01-10 12:58:08 +0000 | [diff] [blame] | 105 | const ABIInfo &getABIInfo() const { return TheABIInfo; } |
Owen Anderson | 47a434f | 2009-08-05 23:18:46 +0000 | [diff] [blame] | 106 | llvm::LLVMContext &getLLVMContext() { return TheModule.getContext(); } |
Devang Patel | 5825ac2 | 2007-10-25 21:40:12 +0000 | [diff] [blame] | 107 | |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 108 | /// ConvertType - Convert type T into a llvm::Type. |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 109 | const llvm::Type *ConvertType(QualType T); |
Chris Lattner | fce71b8 | 2008-04-03 05:50:42 +0000 | [diff] [blame] | 110 | const llvm::Type *ConvertTypeRecursive(QualType T); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 111 | |
Chris Lattner | 4581fff | 2008-02-06 05:21:55 +0000 | [diff] [blame] | 112 | /// ConvertTypeForMem - Convert type T into a llvm::Type. This differs from |
| 113 | /// ConvertType in that it is used to convert to the memory representation for |
| 114 | /// a type. For example, the scalar representation for _Bool is i1, but the |
| 115 | /// memory representation is usually i8 or i32, depending on the target. |
Chris Lattner | 19009e6 | 2008-01-09 18:47:25 +0000 | [diff] [blame] | 116 | const llvm::Type *ConvertTypeForMem(QualType T); |
Eli Friedman | 57a84fb | 2009-03-03 04:48:01 +0000 | [diff] [blame] | 117 | const llvm::Type *ConvertTypeForMemRecursive(QualType T); |
Daniel Dunbar | 45c25ba | 2008-09-10 04:01:49 +0000 | [diff] [blame] | 118 | |
Daniel Dunbar | 36b5f5e | 2009-01-31 03:05:44 +0000 | [diff] [blame] | 119 | /// GetFunctionType - Get the LLVM function type for \arg Info. |
Daniel Dunbar | bb36d33 | 2009-02-02 21:43:58 +0000 | [diff] [blame] | 120 | const llvm::FunctionType *GetFunctionType(const CGFunctionInfo &Info, |
| 121 | bool IsVariadic); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 122 | |
John McCall | c0bf462 | 2010-02-23 00:48:20 +0000 | [diff] [blame] | 123 | const llvm::FunctionType *GetFunctionType(GlobalDecl GD); |
| 124 | |
Anders Carlsson | ecf282b | 2009-11-24 05:08:52 +0000 | [diff] [blame] | 125 | |
Anders Carlsson | 046c294 | 2010-04-17 20:15:18 +0000 | [diff] [blame^] | 126 | /// GetFunctionTypeForVTable - Get the LLVM function type for use in a vtable, |
Anders Carlsson | ecf282b | 2009-11-24 05:08:52 +0000 | [diff] [blame] | 127 | /// given a CXXMethodDecl. If the method to has an incomplete return type, |
| 128 | /// and/or incomplete argument types, this will return the opaque type. |
Anders Carlsson | 046c294 | 2010-04-17 20:15:18 +0000 | [diff] [blame^] | 129 | const llvm::Type *GetFunctionTypeForVTable(const CXXMethodDecl *MD); |
Anders Carlsson | ecf282b | 2009-11-24 05:08:52 +0000 | [diff] [blame] | 130 | |
Daniel Dunbar | 7c465b9 | 2010-03-30 22:26:12 +0000 | [diff] [blame] | 131 | const CGRecordLayout &getCGRecordLayout(const RecordDecl*) const; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 132 | |
Chris Lattner | c5b8806 | 2008-02-06 05:08:19 +0000 | [diff] [blame] | 133 | /// UpdateCompletedType - When we find the full definition for a TagDecl, |
| 134 | /// replace the 'opaque' type we previously made for it if applicable. |
| 135 | void UpdateCompletedType(const TagDecl *TD); |
Daniel Dunbar | 541b63b | 2009-02-02 23:23:47 +0000 | [diff] [blame] | 136 | |
Daniel Dunbar | bac7c25 | 2009-09-11 22:24:53 +0000 | [diff] [blame] | 137 | /// getFunctionInfo - Get the function info for the specified function decl. |
Anders Carlsson | b2bcf1c | 2010-02-06 02:44:09 +0000 | [diff] [blame] | 138 | const CGFunctionInfo &getFunctionInfo(GlobalDecl GD); |
| 139 | |
Daniel Dunbar | 541b63b | 2009-02-02 23:23:47 +0000 | [diff] [blame] | 140 | const CGFunctionInfo &getFunctionInfo(const FunctionDecl *FD); |
Anders Carlsson | f6f8ae5 | 2009-04-03 22:48:58 +0000 | [diff] [blame] | 141 | const CGFunctionInfo &getFunctionInfo(const CXXMethodDecl *MD); |
Daniel Dunbar | 541b63b | 2009-02-02 23:23:47 +0000 | [diff] [blame] | 142 | const CGFunctionInfo &getFunctionInfo(const ObjCMethodDecl *MD); |
Anders Carlsson | f6c56e2 | 2009-11-25 03:15:49 +0000 | [diff] [blame] | 143 | const CGFunctionInfo &getFunctionInfo(const CXXConstructorDecl *D, |
| 144 | CXXCtorType Type); |
| 145 | const CGFunctionInfo &getFunctionInfo(const CXXDestructorDecl *D, |
| 146 | CXXDtorType Type); |
| 147 | |
John McCall | 04a67a6 | 2010-02-05 21:31:56 +0000 | [diff] [blame] | 148 | const CGFunctionInfo &getFunctionInfo(const CallArgList &Args, |
| 149 | const FunctionType *Ty) { |
| 150 | return getFunctionInfo(Ty->getResultType(), Args, |
Rafael Espindola | 264ba48 | 2010-03-30 20:24:48 +0000 | [diff] [blame] | 151 | Ty->getExtInfo()); |
John McCall | 04a67a6 | 2010-02-05 21:31:56 +0000 | [diff] [blame] | 152 | } |
John McCall | ead608a | 2010-02-26 00:48:12 +0000 | [diff] [blame] | 153 | const CGFunctionInfo &getFunctionInfo(CanQual<FunctionProtoType> Ty); |
| 154 | const CGFunctionInfo &getFunctionInfo(CanQual<FunctionNoProtoType> Ty); |
John McCall | 04a67a6 | 2010-02-05 21:31:56 +0000 | [diff] [blame] | 155 | |
Anders Carlsson | 375c31c | 2009-10-03 19:43:08 +0000 | [diff] [blame] | 156 | // getFunctionInfo - Get the function info for a member function. |
| 157 | const CGFunctionInfo &getFunctionInfo(const CXXRecordDecl *RD, |
| 158 | const FunctionProtoType *FTP); |
| 159 | |
Daniel Dunbar | bac7c25 | 2009-09-11 22:24:53 +0000 | [diff] [blame] | 160 | /// getFunctionInfo - Get the function info for a function described by a |
| 161 | /// return type and argument types. If the calling convention is not |
| 162 | /// specified, the "C" calling convention will be used. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 163 | const CGFunctionInfo &getFunctionInfo(QualType ResTy, |
Daniel Dunbar | bac7c25 | 2009-09-11 22:24:53 +0000 | [diff] [blame] | 164 | const CallArgList &Args, |
Rafael Espindola | 264ba48 | 2010-03-30 20:24:48 +0000 | [diff] [blame] | 165 | const FunctionType::ExtInfo &Info); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 166 | const CGFunctionInfo &getFunctionInfo(QualType ResTy, |
Daniel Dunbar | bac7c25 | 2009-09-11 22:24:53 +0000 | [diff] [blame] | 167 | const FunctionArgList &Args, |
Rafael Espindola | 264ba48 | 2010-03-30 20:24:48 +0000 | [diff] [blame] | 168 | const FunctionType::ExtInfo &Info); |
John McCall | ead608a | 2010-02-26 00:48:12 +0000 | [diff] [blame] | 169 | |
| 170 | /// Retrieves the ABI information for the given function signature. |
| 171 | /// |
| 172 | /// \param ArgTys - must all actually be canonical as params |
| 173 | const CGFunctionInfo &getFunctionInfo(CanQualType RetTy, |
| 174 | const llvm::SmallVectorImpl<CanQualType> &ArgTys, |
Rafael Espindola | 264ba48 | 2010-03-30 20:24:48 +0000 | [diff] [blame] | 175 | const FunctionType::ExtInfo &Info); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 176 | |
Daniel Dunbar | 270e203 | 2010-03-31 00:11:27 +0000 | [diff] [blame] | 177 | /// \brief Compute a new LLVM record layout object for the given record. |
| 178 | CGRecordLayout *ComputeRecordLayout(const RecordDecl *D); |
| 179 | |
Chris Lattner | 19009e6 | 2008-01-09 18:47:25 +0000 | [diff] [blame] | 180 | public: // These are internal details of CGT that shouldn't be used externally. |
Chris Lattner | fc3b8e9 | 2008-02-06 05:18:32 +0000 | [diff] [blame] | 181 | /// ConvertTagDeclType - Lay out a tagged decl type like struct or union or |
| 182 | /// enum. |
Chris Lattner | 8fb1dd0 | 2008-02-06 06:06:49 +0000 | [diff] [blame] | 183 | const llvm::Type *ConvertTagDeclType(const TagDecl *TD); |
Daniel Dunbar | 5627377 | 2008-09-17 00:51:38 +0000 | [diff] [blame] | 184 | |
| 185 | /// GetExpandedTypes - Expand the type \arg Ty into the LLVM |
| 186 | /// argument types it would be passed as on the provided vector \arg |
| 187 | /// ArgTys. See ABIArgInfo::Expand. |
| 188 | void GetExpandedTypes(QualType Ty, std::vector<const llvm::Type*> &ArgTys); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 189 | }; |
Chris Lattner | a7674d8 | 2007-07-13 22:13:22 +0000 | [diff] [blame] | 190 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 191 | } // end namespace CodeGen |
| 192 | } // end namespace clang |
| 193 | |
| 194 | #endif |