Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 1 | //===--- CodeGenTypes.cpp - Type translation for LLVM CodeGen -------------===// |
| 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 | |
| 14 | #include "CodeGenTypes.h" |
Daniel Dunbar | de7fb84 | 2008-08-11 05:00:27 +0000 | [diff] [blame] | 15 | #include "clang/AST/ASTContext.h" |
Daniel Dunbar | c4a1dea | 2008-08-11 05:35:13 +0000 | [diff] [blame] | 16 | #include "clang/AST/DeclObjC.h" |
Fariborz Jahanian | 742cd1b | 2009-07-25 21:12:28 +0000 | [diff] [blame] | 17 | #include "clang/AST/DeclCXX.h" |
Daniel Dunbar | de7fb84 | 2008-08-11 05:00:27 +0000 | [diff] [blame] | 18 | #include "clang/AST/Expr.h" |
Anders Carlsson | 19cc4ab | 2009-07-18 19:43:29 +0000 | [diff] [blame] | 19 | #include "clang/AST/RecordLayout.h" |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 20 | #include "llvm/DerivedTypes.h" |
Anders Carlsson | 4e53328 | 2007-08-17 22:00:32 +0000 | [diff] [blame] | 21 | #include "llvm/Module.h" |
Devang Patel | d9e9ede | 2007-10-31 20:08:22 +0000 | [diff] [blame] | 22 | #include "llvm/Target/TargetData.h" |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 23 | |
Daniel Dunbar | 45c25ba | 2008-09-10 04:01:49 +0000 | [diff] [blame] | 24 | #include "CGCall.h" |
Anders Carlsson | 45372a6 | 2009-07-23 03:17:50 +0000 | [diff] [blame] | 25 | #include "CGRecordLayoutBuilder.h" |
Daniel Dunbar | 45c25ba | 2008-09-10 04:01:49 +0000 | [diff] [blame] | 26 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 27 | using namespace clang; |
| 28 | using namespace CodeGen; |
| 29 | |
Devang Patel | 7a4718e | 2007-10-31 20:01:01 +0000 | [diff] [blame] | 30 | CodeGenTypes::CodeGenTypes(ASTContext &Ctx, llvm::Module& M, |
| 31 | const llvm::TargetData &TD) |
Daniel Dunbar | 6b1da0e | 2008-10-13 17:02:26 +0000 | [diff] [blame] | 32 | : Context(Ctx), Target(Ctx.Target), TheModule(M), TheTargetData(TD), |
| 33 | TheABIInfo(0) { |
Chris Lattner | d2d2a11 | 2007-07-14 01:29:45 +0000 | [diff] [blame] | 34 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 35 | |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 36 | CodeGenTypes::~CodeGenTypes() { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 37 | for (llvm::DenseMap<const Type *, CGRecordLayout *>::iterator |
| 38 | I = CGRecordLayouts.begin(), E = CGRecordLayouts.end(); |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 39 | I != E; ++I) |
| 40 | delete I->second; |
Eli Friedman | f8f1893 | 2009-11-20 05:53:06 +0000 | [diff] [blame] | 41 | { |
| 42 | llvm::FoldingSet<CGFunctionInfo>::iterator |
| 43 | I = FunctionInfos.begin(), E = FunctionInfos.end(); |
| 44 | while (I != E) |
| 45 | delete &*I++; |
| 46 | } |
| 47 | delete TheABIInfo; |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 48 | } |
| 49 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 50 | /// ConvertType - Convert the specified type to its LLVM form. |
| 51 | const llvm::Type *CodeGenTypes::ConvertType(QualType T) { |
Chris Lattner | fce71b8 | 2008-04-03 05:50:42 +0000 | [diff] [blame] | 52 | llvm::PATypeHolder Result = ConvertTypeRecursive(T); |
| 53 | |
| 54 | // Any pointers that were converted defered evaluation of their pointee type, |
| 55 | // creating an opaque type instead. This is in order to avoid problems with |
| 56 | // circular types. Loop through all these defered pointees, if any, and |
| 57 | // resolve them now. |
| 58 | while (!PointersToResolve.empty()) { |
Daniel Dunbar | 6aeae7f | 2009-02-26 19:48:14 +0000 | [diff] [blame] | 59 | std::pair<QualType, llvm::OpaqueType*> P = |
Chris Lattner | fce71b8 | 2008-04-03 05:50:42 +0000 | [diff] [blame] | 60 | PointersToResolve.back(); |
| 61 | PointersToResolve.pop_back(); |
| 62 | // We can handle bare pointers here because we know that the only pointers |
| 63 | // to the Opaque type are P.second and from other types. Refining the |
| 64 | // opqaue type away will invalidate P.second, but we don't mind :). |
Eli Friedman | 57a84fb | 2009-03-03 04:48:01 +0000 | [diff] [blame] | 65 | const llvm::Type *NT = ConvertTypeForMemRecursive(P.first); |
Chris Lattner | fce71b8 | 2008-04-03 05:50:42 +0000 | [diff] [blame] | 66 | P.second->refineAbstractTypeTo(NT); |
| 67 | } |
| 68 | |
| 69 | return Result; |
| 70 | } |
| 71 | |
| 72 | const llvm::Type *CodeGenTypes::ConvertTypeRecursive(QualType T) { |
Chris Lattner | 09dc666 | 2009-04-01 02:00:48 +0000 | [diff] [blame] | 73 | T = Context.getCanonicalType(T); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 74 | |
Devang Patel | 30ec997 | 2007-10-25 18:32:36 +0000 | [diff] [blame] | 75 | // See if type is already cached. |
Devang Patel | 0ffe89a | 2007-10-30 20:46:47 +0000 | [diff] [blame] | 76 | llvm::DenseMap<Type *, llvm::PATypeHolder>::iterator |
Chris Lattner | 9619662 | 2008-07-26 22:37:01 +0000 | [diff] [blame] | 77 | I = TypeCache.find(T.getTypePtr()); |
Devang Patel | 3c40085 | 2007-12-21 19:35:28 +0000 | [diff] [blame] | 78 | // If type is found in map and this is not a definition for a opaque |
Chris Lattner | fae6e29 | 2008-02-06 05:29:46 +0000 | [diff] [blame] | 79 | // place holder type then use it. Otherwise, convert type T. |
Chris Lattner | 4581fff | 2008-02-06 05:21:55 +0000 | [diff] [blame] | 80 | if (I != TypeCache.end()) |
Devang Patel | 47c87b4 | 2007-10-30 23:22:14 +0000 | [diff] [blame] | 81 | return I->second.get(); |
Devang Patel | 30ec997 | 2007-10-25 18:32:36 +0000 | [diff] [blame] | 82 | |
| 83 | const llvm::Type *ResultType = ConvertNewType(T); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 84 | TypeCache.insert(std::make_pair(T.getTypePtr(), |
Chris Lattner | 4581fff | 2008-02-06 05:21:55 +0000 | [diff] [blame] | 85 | llvm::PATypeHolder(ResultType))); |
Devang Patel | 30ec997 | 2007-10-25 18:32:36 +0000 | [diff] [blame] | 86 | return ResultType; |
| 87 | } |
| 88 | |
Eli Friedman | 57a84fb | 2009-03-03 04:48:01 +0000 | [diff] [blame] | 89 | const llvm::Type *CodeGenTypes::ConvertTypeForMemRecursive(QualType T) { |
| 90 | const llvm::Type *ResultType = ConvertTypeRecursive(T); |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 91 | if (ResultType == llvm::Type::getInt1Ty(getLLVMContext())) |
| 92 | return llvm::IntegerType::get(getLLVMContext(), |
| 93 | (unsigned)Context.getTypeSize(T)); |
Eli Friedman | 57a84fb | 2009-03-03 04:48:01 +0000 | [diff] [blame] | 94 | return ResultType; |
| 95 | } |
| 96 | |
Chris Lattner | 4581fff | 2008-02-06 05:21:55 +0000 | [diff] [blame] | 97 | /// ConvertTypeForMem - Convert type T into a llvm::Type. This differs from |
| 98 | /// ConvertType in that it is used to convert to the memory representation for |
| 99 | /// a type. For example, the scalar representation for _Bool is i1, but the |
| 100 | /// memory representation is usually i8 or i32, depending on the target. |
Chris Lattner | 19009e6 | 2008-01-09 18:47:25 +0000 | [diff] [blame] | 101 | const llvm::Type *CodeGenTypes::ConvertTypeForMem(QualType T) { |
| 102 | const llvm::Type *R = ConvertType(T); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 103 | |
Chris Lattner | 19009e6 | 2008-01-09 18:47:25 +0000 | [diff] [blame] | 104 | // If this is a non-bool type, don't map it. |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 105 | if (R != llvm::Type::getInt1Ty(getLLVMContext())) |
Chris Lattner | 19009e6 | 2008-01-09 18:47:25 +0000 | [diff] [blame] | 106 | return R; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 107 | |
Chris Lattner | 19009e6 | 2008-01-09 18:47:25 +0000 | [diff] [blame] | 108 | // Otherwise, return an integer of the target-specified size. |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 109 | return llvm::IntegerType::get(getLLVMContext(), |
| 110 | (unsigned)Context.getTypeSize(T)); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 111 | |
Chris Lattner | 19009e6 | 2008-01-09 18:47:25 +0000 | [diff] [blame] | 112 | } |
| 113 | |
Eli Friedman | b3b6b9b | 2009-03-05 03:16:41 +0000 | [diff] [blame] | 114 | // Code to verify a given function type is complete, i.e. the return type |
| 115 | // and all of the argument types are complete. |
| 116 | static const TagType *VerifyFuncTypeComplete(const Type* T) { |
| 117 | const FunctionType *FT = cast<FunctionType>(T); |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 118 | if (const TagType* TT = FT->getResultType()->getAs<TagType>()) |
Eli Friedman | b3b6b9b | 2009-03-05 03:16:41 +0000 | [diff] [blame] | 119 | if (!TT->getDecl()->isDefinition()) |
| 120 | return TT; |
| 121 | if (const FunctionProtoType *FPT = dyn_cast<FunctionProtoType>(T)) |
| 122 | for (unsigned i = 0; i < FPT->getNumArgs(); i++) |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 123 | if (const TagType* TT = FPT->getArgType(i)->getAs<TagType>()) |
Eli Friedman | b3b6b9b | 2009-03-05 03:16:41 +0000 | [diff] [blame] | 124 | if (!TT->getDecl()->isDefinition()) |
| 125 | return TT; |
| 126 | return 0; |
| 127 | } |
| 128 | |
Chris Lattner | c5b8806 | 2008-02-06 05:08:19 +0000 | [diff] [blame] | 129 | /// UpdateCompletedType - When we find the full definition for a TagDecl, |
| 130 | /// replace the 'opaque' type we previously made for it if applicable. |
| 131 | void CodeGenTypes::UpdateCompletedType(const TagDecl *TD) { |
Mike Stump | e607ed0 | 2009-08-07 18:05:12 +0000 | [diff] [blame] | 132 | const Type *Key = Context.getTagDeclType(TD).getTypePtr(); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 133 | llvm::DenseMap<const Type*, llvm::PATypeHolder>::iterator TDTI = |
Daniel Dunbar | efb6d0d | 2008-09-06 02:26:43 +0000 | [diff] [blame] | 134 | TagDeclTypes.find(Key); |
Chris Lattner | 6ef58e3 | 2008-02-06 05:12:09 +0000 | [diff] [blame] | 135 | if (TDTI == TagDeclTypes.end()) return; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 136 | |
Chris Lattner | 6ef58e3 | 2008-02-06 05:12:09 +0000 | [diff] [blame] | 137 | // Remember the opaque LLVM type for this tagdecl. |
Chris Lattner | d86e6bc | 2008-02-05 08:06:13 +0000 | [diff] [blame] | 138 | llvm::PATypeHolder OpaqueHolder = TDTI->second; |
| 139 | assert(isa<llvm::OpaqueType>(OpaqueHolder.get()) && |
Chris Lattner | 6ef58e3 | 2008-02-06 05:12:09 +0000 | [diff] [blame] | 140 | "Updating compilation of an already non-opaque type?"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 141 | |
Chris Lattner | d86e6bc | 2008-02-05 08:06:13 +0000 | [diff] [blame] | 142 | // Remove it from TagDeclTypes so that it will be regenerated. |
| 143 | TagDeclTypes.erase(TDTI); |
| 144 | |
Chris Lattner | 8fb1dd0 | 2008-02-06 06:06:49 +0000 | [diff] [blame] | 145 | // Generate the new type. |
| 146 | const llvm::Type *NT = ConvertTagDeclType(TD); |
Chris Lattner | d86e6bc | 2008-02-05 08:06:13 +0000 | [diff] [blame] | 147 | |
Chris Lattner | 8fb1dd0 | 2008-02-06 06:06:49 +0000 | [diff] [blame] | 148 | // Refine the old opaque type to its new definition. |
| 149 | cast<llvm::OpaqueType>(OpaqueHolder.get())->refineAbstractTypeTo(NT); |
Eli Friedman | b3b6b9b | 2009-03-05 03:16:41 +0000 | [diff] [blame] | 150 | |
| 151 | // Since we just completed a tag type, check to see if any function types |
| 152 | // were completed along with the tag type. |
| 153 | // FIXME: This is very inefficient; if we track which function types depend |
| 154 | // on which tag types, though, it should be reasonably efficient. |
| 155 | llvm::DenseMap<const Type*, llvm::PATypeHolder>::iterator i; |
| 156 | for (i = FunctionTypes.begin(); i != FunctionTypes.end(); ++i) { |
| 157 | if (const TagType* TT = VerifyFuncTypeComplete(i->first)) { |
| 158 | // This function type still depends on an incomplete tag type; make sure |
| 159 | // that tag type has an associated opaque type. |
| 160 | ConvertTagDeclType(TT->getDecl()); |
| 161 | } else { |
| 162 | // This function no longer depends on an incomplete tag type; create the |
| 163 | // function type, and refine the opaque type to the new function type. |
| 164 | llvm::PATypeHolder OpaqueHolder = i->second; |
| 165 | const llvm::Type *NFT = ConvertNewType(QualType(i->first, 0)); |
| 166 | cast<llvm::OpaqueType>(OpaqueHolder.get())->refineAbstractTypeTo(NFT); |
| 167 | FunctionTypes.erase(i); |
| 168 | } |
| 169 | } |
Chris Lattner | d86e6bc | 2008-02-05 08:06:13 +0000 | [diff] [blame] | 170 | } |
| 171 | |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 172 | static const llvm::Type* getTypeForFormat(llvm::LLVMContext &VMContext, |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 173 | const llvm::fltSemantics &format) { |
Chris Lattner | b7cfe88 | 2008-06-30 18:32:54 +0000 | [diff] [blame] | 174 | if (&format == &llvm::APFloat::IEEEsingle) |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 175 | return llvm::Type::getFloatTy(VMContext); |
Chris Lattner | b7cfe88 | 2008-06-30 18:32:54 +0000 | [diff] [blame] | 176 | if (&format == &llvm::APFloat::IEEEdouble) |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 177 | return llvm::Type::getDoubleTy(VMContext); |
Chris Lattner | b7cfe88 | 2008-06-30 18:32:54 +0000 | [diff] [blame] | 178 | if (&format == &llvm::APFloat::IEEEquad) |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 179 | return llvm::Type::getFP128Ty(VMContext); |
Chris Lattner | b7cfe88 | 2008-06-30 18:32:54 +0000 | [diff] [blame] | 180 | if (&format == &llvm::APFloat::PPCDoubleDouble) |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 181 | return llvm::Type::getPPC_FP128Ty(VMContext); |
Chris Lattner | b7cfe88 | 2008-06-30 18:32:54 +0000 | [diff] [blame] | 182 | if (&format == &llvm::APFloat::x87DoubleExtended) |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 183 | return llvm::Type::getX86_FP80Ty(VMContext); |
Chris Lattner | b7cfe88 | 2008-06-30 18:32:54 +0000 | [diff] [blame] | 184 | assert(0 && "Unknown float format!"); |
Eli Friedman | f6a943e | 2008-05-27 04:20:05 +0000 | [diff] [blame] | 185 | return 0; |
| 186 | } |
| 187 | |
Devang Patel | 30ec997 | 2007-10-25 18:32:36 +0000 | [diff] [blame] | 188 | const llvm::Type *CodeGenTypes::ConvertNewType(QualType T) { |
John McCall | e27ec8a | 2009-10-23 23:03:21 +0000 | [diff] [blame] | 189 | const clang::Type &Ty = *Context.getCanonicalType(T).getTypePtr(); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 190 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 191 | switch (Ty.getTypeClass()) { |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 192 | #define TYPE(Class, Base) |
| 193 | #define ABSTRACT_TYPE(Class, Base) |
| 194 | #define NON_CANONICAL_TYPE(Class, Base) case Type::Class: |
| 195 | #define DEPENDENT_TYPE(Class, Base) case Type::Class: |
| 196 | #include "clang/AST/TypeNodes.def" |
| 197 | assert(false && "Non-canonical or dependent types aren't possible."); |
| 198 | break; |
| 199 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 200 | case Type::Builtin: { |
| 201 | switch (cast<BuiltinType>(Ty).getKind()) { |
Argyrios Kyrtzidis | afef76e | 2008-08-09 22:01:55 +0000 | [diff] [blame] | 202 | default: assert(0 && "Unknown builtin type!"); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 203 | case BuiltinType::Void: |
Steve Naroff | de2e22d | 2009-07-15 18:40:39 +0000 | [diff] [blame] | 204 | case BuiltinType::ObjCId: |
| 205 | case BuiltinType::ObjCClass: |
Fariborz Jahanian | 13dcd00 | 2009-11-21 19:53:08 +0000 | [diff] [blame] | 206 | case BuiltinType::ObjCSel: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 207 | // LLVM void type can only be used as the result of a function call. Just |
| 208 | // map to the same as char. |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 209 | return llvm::IntegerType::get(getLLVMContext(), 8); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 210 | |
| 211 | case BuiltinType::Bool: |
Chris Lattner | 19009e6 | 2008-01-09 18:47:25 +0000 | [diff] [blame] | 212 | // Note that we always return bool as i1 for use as a scalar type. |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 213 | return llvm::Type::getInt1Ty(getLLVMContext()); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 214 | |
Chris Lattner | d2d2a11 | 2007-07-14 01:29:45 +0000 | [diff] [blame] | 215 | case BuiltinType::Char_S: |
| 216 | case BuiltinType::Char_U: |
| 217 | case BuiltinType::SChar: |
| 218 | case BuiltinType::UChar: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 219 | case BuiltinType::Short: |
| 220 | case BuiltinType::UShort: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 221 | case BuiltinType::Int: |
| 222 | case BuiltinType::UInt: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 223 | case BuiltinType::Long: |
| 224 | case BuiltinType::ULong: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 225 | case BuiltinType::LongLong: |
| 226 | case BuiltinType::ULongLong: |
Argyrios Kyrtzidis | afef76e | 2008-08-09 22:01:55 +0000 | [diff] [blame] | 227 | case BuiltinType::WChar: |
Alisdair Meredith | f5c209d | 2009-07-14 06:30:34 +0000 | [diff] [blame] | 228 | case BuiltinType::Char16: |
| 229 | case BuiltinType::Char32: |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 230 | return llvm::IntegerType::get(getLLVMContext(), |
Chris Lattner | 98be494 | 2008-03-05 18:54:05 +0000 | [diff] [blame] | 231 | static_cast<unsigned>(Context.getTypeSize(T))); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 232 | |
Eli Friedman | f6a943e | 2008-05-27 04:20:05 +0000 | [diff] [blame] | 233 | case BuiltinType::Float: |
Nate Begeman | c8b1227 | 2008-04-18 05:41:31 +0000 | [diff] [blame] | 234 | case BuiltinType::Double: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 235 | case BuiltinType::LongDouble: |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 236 | return getTypeForFormat(getLLVMContext(), |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 237 | Context.getFloatTypeSemantics(T)); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 238 | |
Anders Carlsson | c1eb14a | 2009-09-15 04:39:46 +0000 | [diff] [blame] | 239 | case BuiltinType::NullPtr: { |
| 240 | // Model std::nullptr_t as i8* |
| 241 | const llvm::Type *Ty = llvm::IntegerType::get(getLLVMContext(), 8); |
| 242 | return llvm::PointerType::getUnqual(Ty); |
| 243 | } |
| 244 | |
Chris Lattner | 2df9ced | 2009-04-30 02:43:43 +0000 | [diff] [blame] | 245 | case BuiltinType::UInt128: |
| 246 | case BuiltinType::Int128: |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 247 | return llvm::IntegerType::get(getLLVMContext(), 128); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 248 | } |
| 249 | break; |
| 250 | } |
Eli Friedman | f98aba3 | 2009-02-13 02:31:07 +0000 | [diff] [blame] | 251 | case Type::FixedWidthInt: |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 252 | return llvm::IntegerType::get(getLLVMContext(), |
Owen Anderson | 0032b27 | 2009-08-13 21:57:51 +0000 | [diff] [blame] | 253 | cast<FixedWidthIntType>(T)->getWidth()); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 254 | case Type::Complex: { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 255 | const llvm::Type *EltTy = |
Chris Lattner | fce71b8 | 2008-04-03 05:50:42 +0000 | [diff] [blame] | 256 | ConvertTypeRecursive(cast<ComplexType>(Ty).getElementType()); |
Owen Anderson | 47a434f | 2009-08-05 23:18:46 +0000 | [diff] [blame] | 257 | return llvm::StructType::get(TheModule.getContext(), EltTy, EltTy, NULL); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 258 | } |
Sebastian Redl | 7c80bd6 | 2009-03-16 23:22:08 +0000 | [diff] [blame] | 259 | case Type::LValueReference: |
| 260 | case Type::RValueReference: { |
Daniel Dunbar | 6aeae7f | 2009-02-26 19:48:14 +0000 | [diff] [blame] | 261 | const ReferenceType &RTy = cast<ReferenceType>(Ty); |
| 262 | QualType ETy = RTy.getPointeeType(); |
Owen Anderson | 8c8f69e | 2009-08-13 23:27:53 +0000 | [diff] [blame] | 263 | llvm::OpaqueType *PointeeType = llvm::OpaqueType::get(getLLVMContext()); |
Daniel Dunbar | 6aeae7f | 2009-02-26 19:48:14 +0000 | [diff] [blame] | 264 | PointersToResolve.push_back(std::make_pair(ETy, PointeeType)); |
| 265 | return llvm::PointerType::get(PointeeType, ETy.getAddressSpace()); |
| 266 | } |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 267 | case Type::Pointer: { |
Daniel Dunbar | 6aeae7f | 2009-02-26 19:48:14 +0000 | [diff] [blame] | 268 | const PointerType &PTy = cast<PointerType>(Ty); |
Chris Lattner | fce71b8 | 2008-04-03 05:50:42 +0000 | [diff] [blame] | 269 | QualType ETy = PTy.getPointeeType(); |
Owen Anderson | 8c8f69e | 2009-08-13 23:27:53 +0000 | [diff] [blame] | 270 | llvm::OpaqueType *PointeeType = llvm::OpaqueType::get(getLLVMContext()); |
Daniel Dunbar | 6aeae7f | 2009-02-26 19:48:14 +0000 | [diff] [blame] | 271 | PointersToResolve.push_back(std::make_pair(ETy, PointeeType)); |
Chris Lattner | fce71b8 | 2008-04-03 05:50:42 +0000 | [diff] [blame] | 272 | return llvm::PointerType::get(PointeeType, ETy.getAddressSpace()); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 273 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 274 | |
Steve Naroff | fb22d96 | 2007-08-30 01:06:46 +0000 | [diff] [blame] | 275 | case Type::VariableArray: { |
| 276 | const VariableArrayType &A = cast<VariableArrayType>(Ty); |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 277 | assert(A.getIndexTypeCVRQualifiers() == 0 && |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 278 | "FIXME: We only handle trivial array types so far!"); |
Eli Friedman | c5773c4 | 2008-02-15 18:16:39 +0000 | [diff] [blame] | 279 | // VLAs resolve to the innermost element type; this matches |
| 280 | // the return of alloca, and there isn't any obviously better choice. |
Eli Friedman | 57a84fb | 2009-03-03 04:48:01 +0000 | [diff] [blame] | 281 | return ConvertTypeForMemRecursive(A.getElementType()); |
Eli Friedman | c5773c4 | 2008-02-15 18:16:39 +0000 | [diff] [blame] | 282 | } |
| 283 | case Type::IncompleteArray: { |
| 284 | const IncompleteArrayType &A = cast<IncompleteArrayType>(Ty); |
John McCall | 0953e76 | 2009-09-24 19:53:00 +0000 | [diff] [blame] | 285 | assert(A.getIndexTypeCVRQualifiers() == 0 && |
Eli Friedman | c5773c4 | 2008-02-15 18:16:39 +0000 | [diff] [blame] | 286 | "FIXME: We only handle trivial array types so far!"); |
| 287 | // int X[] -> [0 x int] |
Eli Friedman | 57a84fb | 2009-03-03 04:48:01 +0000 | [diff] [blame] | 288 | return llvm::ArrayType::get(ConvertTypeForMemRecursive(A.getElementType()), 0); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 289 | } |
Steve Naroff | fb22d96 | 2007-08-30 01:06:46 +0000 | [diff] [blame] | 290 | case Type::ConstantArray: { |
| 291 | const ConstantArrayType &A = cast<ConstantArrayType>(Ty); |
Eli Friedman | 57a84fb | 2009-03-03 04:48:01 +0000 | [diff] [blame] | 292 | const llvm::Type *EltTy = ConvertTypeForMemRecursive(A.getElementType()); |
Steve Naroff | fb22d96 | 2007-08-30 01:06:46 +0000 | [diff] [blame] | 293 | return llvm::ArrayType::get(EltTy, A.getSize().getZExtValue()); |
| 294 | } |
Nate Begeman | 213541a | 2008-04-18 23:10:10 +0000 | [diff] [blame] | 295 | case Type::ExtVector: |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 296 | case Type::Vector: { |
| 297 | const VectorType &VT = cast<VectorType>(Ty); |
Chris Lattner | fce71b8 | 2008-04-03 05:50:42 +0000 | [diff] [blame] | 298 | return llvm::VectorType::get(ConvertTypeRecursive(VT.getElementType()), |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 299 | VT.getNumElements()); |
| 300 | } |
| 301 | case Type::FunctionNoProto: |
Daniel Dunbar | bb36d33 | 2009-02-02 21:43:58 +0000 | [diff] [blame] | 302 | case Type::FunctionProto: { |
Eli Friedman | b3b6b9b | 2009-03-05 03:16:41 +0000 | [diff] [blame] | 303 | // First, check whether we can build the full function type. |
| 304 | if (const TagType* TT = VerifyFuncTypeComplete(&Ty)) { |
| 305 | // This function's type depends on an incomplete tag type; make sure |
| 306 | // we have an opaque type corresponding to the tag type. |
| 307 | ConvertTagDeclType(TT->getDecl()); |
| 308 | // Create an opaque type for this function type, save it, and return it. |
Owen Anderson | 8c8f69e | 2009-08-13 23:27:53 +0000 | [diff] [blame] | 309 | llvm::Type *ResultType = llvm::OpaqueType::get(getLLVMContext()); |
Eli Friedman | b3b6b9b | 2009-03-05 03:16:41 +0000 | [diff] [blame] | 310 | FunctionTypes.insert(std::make_pair(&Ty, ResultType)); |
| 311 | return ResultType; |
| 312 | } |
| 313 | // The function type can be built; call the appropriate routines to |
| 314 | // build it. |
Chris Lattner | 9a1a9c4 | 2009-03-31 08:55:07 +0000 | [diff] [blame] | 315 | if (const FunctionProtoType *FPT = dyn_cast<FunctionProtoType>(&Ty)) |
Eli Friedman | b3b6b9b | 2009-03-05 03:16:41 +0000 | [diff] [blame] | 316 | return GetFunctionType(getFunctionInfo(FPT), FPT->isVariadic()); |
Chris Lattner | 9a1a9c4 | 2009-03-31 08:55:07 +0000 | [diff] [blame] | 317 | |
| 318 | const FunctionNoProtoType *FNPT = cast<FunctionNoProtoType>(&Ty); |
| 319 | return GetFunctionType(getFunctionInfo(FNPT), true); |
Daniel Dunbar | bb36d33 | 2009-02-02 21:43:58 +0000 | [diff] [blame] | 320 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 321 | |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 322 | case Type::ObjCInterface: { |
Daniel Dunbar | 412f59b | 2009-04-22 10:28:39 +0000 | [diff] [blame] | 323 | // Objective-C interfaces are always opaque (outside of the |
| 324 | // runtime, which can do whatever it likes); we never refine |
| 325 | // these. |
| 326 | const llvm::Type *&T = InterfaceTypes[cast<ObjCInterfaceType>(&Ty)]; |
| 327 | if (!T) |
Owen Anderson | 8c8f69e | 2009-08-13 23:27:53 +0000 | [diff] [blame] | 328 | T = llvm::OpaqueType::get(getLLVMContext()); |
Daniel Dunbar | 412f59b | 2009-04-22 10:28:39 +0000 | [diff] [blame] | 329 | return T; |
Chris Lattner | 391d77a | 2008-03-30 23:03:07 +0000 | [diff] [blame] | 330 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 331 | |
Steve Naroff | 14108da | 2009-07-10 23:34:53 +0000 | [diff] [blame] | 332 | case Type::ObjCObjectPointer: { |
Daniel Dunbar | 28e4780 | 2009-07-11 21:12:14 +0000 | [diff] [blame] | 333 | // Protocol qualifications do not influence the LLVM type, we just return a |
| 334 | // pointer to the underlying interface type. We don't need to worry about |
| 335 | // recursive conversion. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 336 | const llvm::Type *T = |
Daniel Dunbar | 28e4780 | 2009-07-11 21:12:14 +0000 | [diff] [blame] | 337 | ConvertTypeRecursive(cast<ObjCObjectPointerType>(Ty).getPointeeType()); |
| 338 | return llvm::PointerType::getUnqual(T); |
Steve Naroff | 14108da | 2009-07-10 23:34:53 +0000 | [diff] [blame] | 339 | } |
Daniel Dunbar | 28e4780 | 2009-07-11 21:12:14 +0000 | [diff] [blame] | 340 | |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 341 | case Type::Record: |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 342 | case Type::Enum: { |
Chris Lattner | de0efb3 | 2008-02-06 05:48:29 +0000 | [diff] [blame] | 343 | const TagDecl *TD = cast<TagType>(Ty).getDecl(); |
Chris Lattner | 8fb1dd0 | 2008-02-06 06:06:49 +0000 | [diff] [blame] | 344 | const llvm::Type *Res = ConvertTagDeclType(TD); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 345 | |
Chris Lattner | de0efb3 | 2008-02-06 05:48:29 +0000 | [diff] [blame] | 346 | std::string TypeName(TD->getKindName()); |
| 347 | TypeName += '.'; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 348 | |
Chris Lattner | de0efb3 | 2008-02-06 05:48:29 +0000 | [diff] [blame] | 349 | // Name the codegen type after the typedef name |
| 350 | // if there is no tag type name available |
| 351 | if (TD->getIdentifier()) |
Anders Carlsson | 6b7fc13 | 2009-09-26 19:03:24 +0000 | [diff] [blame] | 352 | // FIXME: We should not have to check for a null decl context here. |
| 353 | // Right now we do it because the implicit Obj-C decls don't have one. |
| 354 | TypeName += TD->getDeclContext() ? TD->getQualifiedNameAsString() : |
| 355 | TD->getNameAsString(); |
Chris Lattner | de0efb3 | 2008-02-06 05:48:29 +0000 | [diff] [blame] | 356 | else if (const TypedefType *TdT = dyn_cast<TypedefType>(T)) |
Anders Carlsson | 6b7fc13 | 2009-09-26 19:03:24 +0000 | [diff] [blame] | 357 | // FIXME: We should not have to check for a null decl context here. |
| 358 | // Right now we do it because the implicit Obj-C decls don't have one. |
| 359 | TypeName += TdT->getDecl()->getDeclContext() ? |
| 360 | TdT->getDecl()->getQualifiedNameAsString() : |
| 361 | TdT->getDecl()->getNameAsString(); |
Chris Lattner | de0efb3 | 2008-02-06 05:48:29 +0000 | [diff] [blame] | 362 | else |
| 363 | TypeName += "anon"; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 364 | |
| 365 | TheModule.addTypeName(TypeName, Res); |
Chris Lattner | de0efb3 | 2008-02-06 05:48:29 +0000 | [diff] [blame] | 366 | return Res; |
| 367 | } |
Daniel Dunbar | 9048891 | 2008-08-28 18:02:04 +0000 | [diff] [blame] | 368 | |
| 369 | case Type::BlockPointer: { |
Daniel Dunbar | 4e174f1 | 2009-01-09 02:48:46 +0000 | [diff] [blame] | 370 | const QualType FTy = cast<BlockPointerType>(Ty).getPointeeType(); |
Owen Anderson | 8c8f69e | 2009-08-13 23:27:53 +0000 | [diff] [blame] | 371 | llvm::OpaqueType *PointeeType = llvm::OpaqueType::get(getLLVMContext()); |
Fariborz Jahanian | 209bb43 | 2009-03-13 20:36:41 +0000 | [diff] [blame] | 372 | PointersToResolve.push_back(std::make_pair(FTy, PointeeType)); |
| 373 | return llvm::PointerType::get(PointeeType, FTy.getAddressSpace()); |
Daniel Dunbar | 9048891 | 2008-08-28 18:02:04 +0000 | [diff] [blame] | 374 | } |
Sebastian Redl | 424c51d | 2009-01-25 13:35:30 +0000 | [diff] [blame] | 375 | |
Anders Carlsson | 0e65001 | 2009-05-17 17:41:20 +0000 | [diff] [blame] | 376 | case Type::MemberPointer: { |
| 377 | // FIXME: This is ABI dependent. We use the Itanium C++ ABI. |
| 378 | // http://www.codesourcery.com/public/cxx-abi/abi.html#member-pointers |
| 379 | // If we ever want to support other ABIs this needs to be abstracted. |
| 380 | |
| 381 | QualType ETy = cast<MemberPointerType>(Ty).getPointeeType(); |
| 382 | if (ETy->isFunctionType()) { |
Owen Anderson | 47a434f | 2009-08-05 23:18:46 +0000 | [diff] [blame] | 383 | return llvm::StructType::get(TheModule.getContext(), |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 384 | ConvertType(Context.getPointerDiffType()), |
Anders Carlsson | 0e65001 | 2009-05-17 17:41:20 +0000 | [diff] [blame] | 385 | ConvertType(Context.getPointerDiffType()), |
| 386 | NULL); |
| 387 | } else |
| 388 | return ConvertType(Context.getPointerDiffType()); |
| 389 | } |
Douglas Gregor | 7532dc6 | 2009-03-30 22:58:21 +0000 | [diff] [blame] | 390 | |
| 391 | case Type::TemplateSpecialization: |
| 392 | assert(false && "Dependent types can't get here"); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 393 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 394 | |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 395 | // FIXME: implement. |
Owen Anderson | 8c8f69e | 2009-08-13 23:27:53 +0000 | [diff] [blame] | 396 | return llvm::OpaqueType::get(getLLVMContext()); |
Reid Spencer | 5f016e2 | 2007-07-11 17:01:13 +0000 | [diff] [blame] | 397 | } |
| 398 | |
Chris Lattner | fc3b8e9 | 2008-02-06 05:18:32 +0000 | [diff] [blame] | 399 | /// ConvertTagDeclType - Lay out a tagged decl type like struct or union or |
| 400 | /// enum. |
Chris Lattner | 8fb1dd0 | 2008-02-06 06:06:49 +0000 | [diff] [blame] | 401 | const llvm::Type *CodeGenTypes::ConvertTagDeclType(const TagDecl *TD) { |
Fariborz Jahanian | cad8665 | 2009-07-27 20:57:45 +0000 | [diff] [blame] | 402 | |
| 403 | // FIXME. This may have to move to a better place. |
| 404 | if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(TD)) { |
Fariborz Jahanian | cad8665 | 2009-07-27 20:57:45 +0000 | [diff] [blame] | 405 | for (CXXRecordDecl::base_class_const_iterator i = RD->bases_begin(), |
| 406 | e = RD->bases_end(); i != e; ++i) { |
| 407 | if (!i->isVirtual()) { |
| 408 | const CXXRecordDecl *Base = |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 409 | cast<CXXRecordDecl>(i->getType()->getAs<RecordType>()->getDecl()); |
Fariborz Jahanian | cad8665 | 2009-07-27 20:57:45 +0000 | [diff] [blame] | 410 | ConvertTagDeclType(Base); |
| 411 | } |
| 412 | } |
| 413 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 414 | |
Daniel Dunbar | efb6d0d | 2008-09-06 02:26:43 +0000 | [diff] [blame] | 415 | // TagDecl's are not necessarily unique, instead use the (clang) |
| 416 | // type connected to the decl. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 417 | const Type *Key = |
Mike Stump | e607ed0 | 2009-08-07 18:05:12 +0000 | [diff] [blame] | 418 | Context.getTagDeclType(TD).getTypePtr(); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 419 | llvm::DenseMap<const Type*, llvm::PATypeHolder>::iterator TDTI = |
Daniel Dunbar | efb6d0d | 2008-09-06 02:26:43 +0000 | [diff] [blame] | 420 | TagDeclTypes.find(Key); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 421 | |
Chris Lattner | 5de00fc | 2008-02-06 06:03:51 +0000 | [diff] [blame] | 422 | // If we've already compiled this tag type, use the previous definition. |
| 423 | if (TDTI != TagDeclTypes.end()) |
Chris Lattner | fc3b8e9 | 2008-02-06 05:18:32 +0000 | [diff] [blame] | 424 | return TDTI->second; |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 425 | |
Chris Lattner | 5de00fc | 2008-02-06 06:03:51 +0000 | [diff] [blame] | 426 | // If this is still a forward definition, just define an opaque type to use |
| 427 | // for this tagged decl. |
Chris Lattner | fc3b8e9 | 2008-02-06 05:18:32 +0000 | [diff] [blame] | 428 | if (!TD->isDefinition()) { |
Owen Anderson | 8c8f69e | 2009-08-13 23:27:53 +0000 | [diff] [blame] | 429 | llvm::Type *ResultType = llvm::OpaqueType::get(getLLVMContext()); |
Daniel Dunbar | efb6d0d | 2008-09-06 02:26:43 +0000 | [diff] [blame] | 430 | TagDeclTypes.insert(std::make_pair(Key, ResultType)); |
Chris Lattner | 5de00fc | 2008-02-06 06:03:51 +0000 | [diff] [blame] | 431 | return ResultType; |
| 432 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 433 | |
Chris Lattner | 5de00fc | 2008-02-06 06:03:51 +0000 | [diff] [blame] | 434 | // Okay, this is a definition of a type. Compile the implementation now. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 435 | |
Argyrios Kyrtzidis | 39ba4ae | 2008-06-09 23:19:58 +0000 | [diff] [blame] | 436 | if (TD->isEnum()) { |
Chris Lattner | fc3b8e9 | 2008-02-06 05:18:32 +0000 | [diff] [blame] | 437 | // Don't bother storing enums in TagDeclTypes. |
Chris Lattner | fce71b8 | 2008-04-03 05:50:42 +0000 | [diff] [blame] | 438 | return ConvertTypeRecursive(cast<EnumDecl>(TD)->getIntegerType()); |
Chris Lattner | 5de00fc | 2008-02-06 06:03:51 +0000 | [diff] [blame] | 439 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 440 | |
Chris Lattner | 5de00fc | 2008-02-06 06:03:51 +0000 | [diff] [blame] | 441 | // This decl could well be recursive. In this case, insert an opaque |
| 442 | // definition of this type, which the recursive uses will get. We will then |
| 443 | // refine this opaque version later. |
| 444 | |
| 445 | // Create new OpaqueType now for later use in case this is a recursive |
| 446 | // type. This will later be refined to the actual type. |
Owen Anderson | 8c8f69e | 2009-08-13 23:27:53 +0000 | [diff] [blame] | 447 | llvm::PATypeHolder ResultHolder = llvm::OpaqueType::get(getLLVMContext()); |
Daniel Dunbar | efb6d0d | 2008-09-06 02:26:43 +0000 | [diff] [blame] | 448 | TagDeclTypes.insert(std::make_pair(Key, ResultHolder)); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 449 | |
Chris Lattner | 5de00fc | 2008-02-06 06:03:51 +0000 | [diff] [blame] | 450 | const llvm::Type *ResultType; |
| 451 | const RecordDecl *RD = cast<const RecordDecl>(TD); |
Daniel Dunbar | ae28723 | 2009-04-22 08:50:59 +0000 | [diff] [blame] | 452 | |
Anders Carlsson | 696798f | 2009-07-27 17:10:54 +0000 | [diff] [blame] | 453 | // Layout fields. |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 454 | CGRecordLayout *Layout = |
Anders Carlsson | 696798f | 2009-07-27 17:10:54 +0000 | [diff] [blame] | 455 | CGRecordLayoutBuilder::ComputeLayout(*this, RD); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 456 | |
Anders Carlsson | 696798f | 2009-07-27 17:10:54 +0000 | [diff] [blame] | 457 | CGRecordLayouts[Key] = Layout; |
| 458 | ResultType = Layout->getLLVMType(); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 459 | |
Chris Lattner | 5de00fc | 2008-02-06 06:03:51 +0000 | [diff] [blame] | 460 | // Refine our Opaque type to ResultType. This can invalidate ResultType, so |
| 461 | // make sure to read the result out of the holder. |
| 462 | cast<llvm::OpaqueType>(ResultHolder.get()) |
| 463 | ->refineAbstractTypeTo(ResultType); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 464 | |
Chris Lattner | 5de00fc | 2008-02-06 06:03:51 +0000 | [diff] [blame] | 465 | return ResultHolder.get(); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 466 | } |
Chris Lattner | fc3b8e9 | 2008-02-06 05:18:32 +0000 | [diff] [blame] | 467 | |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 468 | /// getLLVMFieldNo - Return llvm::StructType element number |
| 469 | /// that corresponds to the field FD. |
| 470 | unsigned CodeGenTypes::getLLVMFieldNo(const FieldDecl *FD) { |
Anders Carlsson | 8330cee | 2009-07-23 17:01:21 +0000 | [diff] [blame] | 471 | assert(!FD->isBitField() && "Don't use getLLVMFieldNo on bit fields!"); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 472 | |
Chris Lattner | ce5605e | 2008-03-30 23:25:33 +0000 | [diff] [blame] | 473 | llvm::DenseMap<const FieldDecl*, unsigned>::iterator I = FieldInfo.find(FD); |
Hartmut Kaiser | 21fdf41 | 2007-10-24 00:07:36 +0000 | [diff] [blame] | 474 | assert (I != FieldInfo.end() && "Unable to find field info"); |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 475 | return I->second; |
| 476 | } |
| 477 | |
Devang Patel | c4c429a | 2007-10-24 00:56:23 +0000 | [diff] [blame] | 478 | /// addFieldInfo - Assign field number to field FD. |
Lauro Ramos Venancio | 2c46ce8 | 2008-01-21 22:54:57 +0000 | [diff] [blame] | 479 | void CodeGenTypes::addFieldInfo(const FieldDecl *FD, unsigned No) { |
| 480 | FieldInfo[FD] = No; |
| 481 | } |
| 482 | |
| 483 | /// getBitFieldInfo - Return the BitFieldInfo that corresponds to the field FD. |
| 484 | CodeGenTypes::BitFieldInfo CodeGenTypes::getBitFieldInfo(const FieldDecl *FD) { |
| 485 | llvm::DenseMap<const FieldDecl *, BitFieldInfo>::iterator |
| 486 | I = BitFields.find(FD); |
| 487 | assert (I != BitFields.end() && "Unable to find bitfield info"); |
| 488 | return I->second; |
| 489 | } |
| 490 | |
| 491 | /// addBitFieldInfo - Assign a start bit and a size to field FD. |
Anders Carlsson | 8330cee | 2009-07-23 17:01:21 +0000 | [diff] [blame] | 492 | void CodeGenTypes::addBitFieldInfo(const FieldDecl *FD, unsigned FieldNo, |
| 493 | unsigned Start, unsigned Size) { |
| 494 | BitFields.insert(std::make_pair(FD, BitFieldInfo(FieldNo, Start, Size))); |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 495 | } |
| 496 | |
Devang Patel | 88a981b | 2007-11-01 19:11:01 +0000 | [diff] [blame] | 497 | /// getCGRecordLayout - Return record layout info for the given llvm::Type. |
Anders Carlsson | ad3e711 | 2009-08-24 17:16:23 +0000 | [diff] [blame] | 498 | const CGRecordLayout & |
Chris Lattner | af31913 | 2008-02-05 06:55:31 +0000 | [diff] [blame] | 499 | CodeGenTypes::getCGRecordLayout(const TagDecl *TD) const { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 500 | const Type *Key = |
Mike Stump | e607ed0 | 2009-08-07 18:05:12 +0000 | [diff] [blame] | 501 | Context.getTagDeclType(TD).getTypePtr(); |
Jeffrey Yasskin | 3958b50 | 2009-11-10 01:17:45 +0000 | [diff] [blame] | 502 | llvm::DenseMap<const Type*, CGRecordLayout *>::const_iterator I |
Daniel Dunbar | efb6d0d | 2008-09-06 02:26:43 +0000 | [diff] [blame] | 503 | = CGRecordLayouts.find(Key); |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 504 | assert (I != CGRecordLayouts.end() |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 505 | && "Unable to find record layout information for type"); |
Anders Carlsson | ad3e711 | 2009-08-24 17:16:23 +0000 | [diff] [blame] | 506 | return *I->second; |
Devang Patel | b84a06e | 2007-10-23 02:10:49 +0000 | [diff] [blame] | 507 | } |