CodeGenTypes.cpp revision c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0
15f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===--- CodeGenTypes.cpp - Type translation for LLVM CodeGen -------------===// 25f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 35f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// The LLVM Compiler Infrastructure 45f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 50bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// This file is distributed under the University of Illinois Open Source 60bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// License. See LICENSE.TXT for details. 75f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 85f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 95f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump// This is the code that handles AST -> LLVM type lowering. 115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "CodeGenTypes.h" 15270e203b50ed8791e61afd357596bcf050cf2bfdDaniel Dunbar#include "CGCall.h" 162924ade97ee4228fcf3518d89cd4bd1653236b48Daniel Dunbar#include "CGRecordLayout.h" 17de7fb8413b13651fd85b7125d08b3c9ac2816d9dDaniel Dunbar#include "clang/AST/ASTContext.h" 18c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar#include "clang/AST/DeclObjC.h" 19742cd1b7bb86b52b23b335d47abbd842dac0e1bfFariborz Jahanian#include "clang/AST/DeclCXX.h" 20de7fb8413b13651fd85b7125d08b3c9ac2816d9dDaniel Dunbar#include "clang/AST/Expr.h" 2119cc4abea06a9b49e0e16a50d335c064cd723572Anders Carlsson#include "clang/AST/RecordLayout.h" 225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "llvm/DerivedTypes.h" 234e533287e6a9adac78c9ac370612581aad9b8c5eAnders Carlsson#include "llvm/Module.h" 24d9e9ede6b1703849da739629904dad197306e527Devang Patel#include "llvm/Target/TargetData.h" 255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace clang; 265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace CodeGen; 275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 287a4718e813e5e99d478567a482217c7eef8572c5Devang PatelCodeGenTypes::CodeGenTypes(ASTContext &Ctx, llvm::Module& M, 2982d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov const llvm::TargetData &TD, const ABIInfo &Info) 306b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar : Context(Ctx), Target(Ctx.Target), TheModule(M), TheTargetData(TD), 3182d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov TheABIInfo(Info) { 32d2d2a11a91d7ddf468bfb70f66362d24806ed601Chris Lattner} 335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 34b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang PatelCodeGenTypes::~CodeGenTypes() { 351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (llvm::DenseMap<const Type *, CGRecordLayout *>::iterator 361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump I = CGRecordLayouts.begin(), E = CGRecordLayouts.end(); 37b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang Patel I != E; ++I) 38b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang Patel delete I->second; 396f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner 406f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner for (llvm::FoldingSet<CGFunctionInfo>::iterator 416f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner I = FunctionInfos.begin(), E = FunctionInfos.end(); I != E; ) 426f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner delete &*I++; 43b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang Patel} 44b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang Patel 455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ConvertType - Convert the specified type to its LLVM form. 465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerconst llvm::Type *CodeGenTypes::ConvertType(QualType T) { 47fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner llvm::PATypeHolder Result = ConvertTypeRecursive(T); 48fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner 49fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner // Any pointers that were converted defered evaluation of their pointee type, 50fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner // creating an opaque type instead. This is in order to avoid problems with 51fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner // circular types. Loop through all these defered pointees, if any, and 52fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner // resolve them now. 53fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner while (!PointersToResolve.empty()) { 546f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner std::pair<QualType, llvm::OpaqueType*> P = PointersToResolve.pop_back_val(); 556f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner 56fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner // We can handle bare pointers here because we know that the only pointers 57fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner // to the Opaque type are P.second and from other types. Refining the 58fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner // opqaue type away will invalidate P.second, but we don't mind :). 5957a84fb51de4f3de50debcf12dd194af8c6aaa58Eli Friedman const llvm::Type *NT = ConvertTypeForMemRecursive(P.first); 60fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner P.second->refineAbstractTypeTo(NT); 61fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner } 62fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner 63fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner return Result; 64fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner} 65fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner 66fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattnerconst llvm::Type *CodeGenTypes::ConvertTypeRecursive(QualType T) { 6709dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner T = Context.getCanonicalType(T); 681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6930ec9972be5a5af1f7a2277360dfa3aa1540b4faDevang Patel // See if type is already cached. 700ffe89ab1e4890899e0e11a6f68223567a69b38aDevang Patel llvm::DenseMap<Type *, llvm::PATypeHolder>::iterator 719619662a1d42e2008b865d3459c0677e149dad1bChris Lattner I = TypeCache.find(T.getTypePtr()); 723c40085b373d8e6e4523812e06f73a0cb9d5142cDevang Patel // If type is found in map and this is not a definition for a opaque 73fae6e2994a51d8ec1e61b6eb68765247c83b1ccfChris Lattner // place holder type then use it. Otherwise, convert type T. 744581fff8af09a156a9dcc4de62587385c5da9574Chris Lattner if (I != TypeCache.end()) 7547c87b4b160d45285b24b1b7f4e3cbaaed3dc464Devang Patel return I->second.get(); 7630ec9972be5a5af1f7a2277360dfa3aa1540b4faDevang Patel 7730ec9972be5a5af1f7a2277360dfa3aa1540b4faDevang Patel const llvm::Type *ResultType = ConvertNewType(T); 781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TypeCache.insert(std::make_pair(T.getTypePtr(), 794581fff8af09a156a9dcc4de62587385c5da9574Chris Lattner llvm::PATypeHolder(ResultType))); 8030ec9972be5a5af1f7a2277360dfa3aa1540b4faDevang Patel return ResultType; 8130ec9972be5a5af1f7a2277360dfa3aa1540b4faDevang Patel} 8230ec9972be5a5af1f7a2277360dfa3aa1540b4faDevang Patel 8357a84fb51de4f3de50debcf12dd194af8c6aaa58Eli Friedmanconst llvm::Type *CodeGenTypes::ConvertTypeForMemRecursive(QualType T) { 8457a84fb51de4f3de50debcf12dd194af8c6aaa58Eli Friedman const llvm::Type *ResultType = ConvertTypeRecursive(T); 85f177d9d6c27fbbcee8c00fd90b8306985c03c54aDuncan Sands if (ResultType->isIntegerTy(1)) 860032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::IntegerType::get(getLLVMContext(), 870032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson (unsigned)Context.getTypeSize(T)); 886f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner // FIXME: Should assert that the llvm type and AST type has the same size. 8957a84fb51de4f3de50debcf12dd194af8c6aaa58Eli Friedman return ResultType; 9057a84fb51de4f3de50debcf12dd194af8c6aaa58Eli Friedman} 9157a84fb51de4f3de50debcf12dd194af8c6aaa58Eli Friedman 924581fff8af09a156a9dcc4de62587385c5da9574Chris Lattner/// ConvertTypeForMem - Convert type T into a llvm::Type. This differs from 934581fff8af09a156a9dcc4de62587385c5da9574Chris Lattner/// ConvertType in that it is used to convert to the memory representation for 944581fff8af09a156a9dcc4de62587385c5da9574Chris Lattner/// a type. For example, the scalar representation for _Bool is i1, but the 954581fff8af09a156a9dcc4de62587385c5da9574Chris Lattner/// memory representation is usually i8 or i32, depending on the target. 9619009e6fe7e0f51d2e49f4c94928a048c11c5281Chris Lattnerconst llvm::Type *CodeGenTypes::ConvertTypeForMem(QualType T) { 9719009e6fe7e0f51d2e49f4c94928a048c11c5281Chris Lattner const llvm::Type *R = ConvertType(T); 981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9919009e6fe7e0f51d2e49f4c94928a048c11c5281Chris Lattner // If this is a non-bool type, don't map it. 100f177d9d6c27fbbcee8c00fd90b8306985c03c54aDuncan Sands if (!R->isIntegerTy(1)) 10119009e6fe7e0f51d2e49f4c94928a048c11c5281Chris Lattner return R; 1021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10319009e6fe7e0f51d2e49f4c94928a048c11c5281Chris Lattner // Otherwise, return an integer of the target-specified size. 1040032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::IntegerType::get(getLLVMContext(), 1050032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson (unsigned)Context.getTypeSize(T)); 1061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10719009e6fe7e0f51d2e49f4c94928a048c11c5281Chris Lattner} 10819009e6fe7e0f51d2e49f4c94928a048c11c5281Chris Lattner 109b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman// Code to verify a given function type is complete, i.e. the return type 110b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman// and all of the argument types are complete. 111b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedmanstatic const TagType *VerifyFuncTypeComplete(const Type* T) { 112b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman const FunctionType *FT = cast<FunctionType>(T); 1136217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek if (const TagType* TT = FT->getResultType()->getAs<TagType>()) 114b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman if (!TT->getDecl()->isDefinition()) 115b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman return TT; 116b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman if (const FunctionProtoType *FPT = dyn_cast<FunctionProtoType>(T)) 117b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman for (unsigned i = 0; i < FPT->getNumArgs(); i++) 1186217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek if (const TagType* TT = FPT->getArgType(i)->getAs<TagType>()) 119b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman if (!TT->getDecl()->isDefinition()) 120b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman return TT; 121b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman return 0; 122b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman} 123b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman 124c5b8806cda286cf41866176ef98011fdaa68da01Chris Lattner/// UpdateCompletedType - When we find the full definition for a TagDecl, 125c5b8806cda286cf41866176ef98011fdaa68da01Chris Lattner/// replace the 'opaque' type we previously made for it if applicable. 126c5b8806cda286cf41866176ef98011fdaa68da01Chris Lattnervoid CodeGenTypes::UpdateCompletedType(const TagDecl *TD) { 127e607ed068334bacb8d7b093996b4671c6ca79e25Mike Stump const Type *Key = Context.getTagDeclType(TD).getTypePtr(); 1281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::DenseMap<const Type*, llvm::PATypeHolder>::iterator TDTI = 129efb6d0dc3eafbcf4f8cd053138bd1abed1dda8d4Daniel Dunbar TagDeclTypes.find(Key); 1306ef58e36bbbfa232fe8b50309361e841985abfc6Chris Lattner if (TDTI == TagDeclTypes.end()) return; 1311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1326ef58e36bbbfa232fe8b50309361e841985abfc6Chris Lattner // Remember the opaque LLVM type for this tagdecl. 133d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner llvm::PATypeHolder OpaqueHolder = TDTI->second; 134d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner assert(isa<llvm::OpaqueType>(OpaqueHolder.get()) && 1356ef58e36bbbfa232fe8b50309361e841985abfc6Chris Lattner "Updating compilation of an already non-opaque type?"); 1361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 137d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner // Remove it from TagDeclTypes so that it will be regenerated. 138d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner TagDeclTypes.erase(TDTI); 139d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner 1408fb1dd005f4cb530bca11d622362d39727294420Chris Lattner // Generate the new type. 1418fb1dd005f4cb530bca11d622362d39727294420Chris Lattner const llvm::Type *NT = ConvertTagDeclType(TD); 142d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner 1438fb1dd005f4cb530bca11d622362d39727294420Chris Lattner // Refine the old opaque type to its new definition. 1448fb1dd005f4cb530bca11d622362d39727294420Chris Lattner cast<llvm::OpaqueType>(OpaqueHolder.get())->refineAbstractTypeTo(NT); 145b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman 146b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // Since we just completed a tag type, check to see if any function types 147b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // were completed along with the tag type. 148b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // FIXME: This is very inefficient; if we track which function types depend 149b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // on which tag types, though, it should be reasonably efficient. 150b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman llvm::DenseMap<const Type*, llvm::PATypeHolder>::iterator i; 151b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman for (i = FunctionTypes.begin(); i != FunctionTypes.end(); ++i) { 152b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman if (const TagType* TT = VerifyFuncTypeComplete(i->first)) { 153b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // This function type still depends on an incomplete tag type; make sure 154b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // that tag type has an associated opaque type. 155b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman ConvertTagDeclType(TT->getDecl()); 156b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman } else { 157b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // This function no longer depends on an incomplete tag type; create the 158b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // function type, and refine the opaque type to the new function type. 159b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman llvm::PATypeHolder OpaqueHolder = i->second; 160b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman const llvm::Type *NFT = ConvertNewType(QualType(i->first, 0)); 161b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman cast<llvm::OpaqueType>(OpaqueHolder.get())->refineAbstractTypeTo(NFT); 162b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman FunctionTypes.erase(i); 163b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman } 164b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman } 165d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner} 166d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner 1671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpstatic const llvm::Type* getTypeForFormat(llvm::LLVMContext &VMContext, 1680032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson const llvm::fltSemantics &format) { 169b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner if (&format == &llvm::APFloat::IEEEsingle) 1700032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::Type::getFloatTy(VMContext); 171b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner if (&format == &llvm::APFloat::IEEEdouble) 1720032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::Type::getDoubleTy(VMContext); 173b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner if (&format == &llvm::APFloat::IEEEquad) 1740032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::Type::getFP128Ty(VMContext); 175b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner if (&format == &llvm::APFloat::PPCDoubleDouble) 1760032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::Type::getPPC_FP128Ty(VMContext); 177b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner if (&format == &llvm::APFloat::x87DoubleExtended) 1780032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::Type::getX86_FP80Ty(VMContext); 179b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner assert(0 && "Unknown float format!"); 180f6a943e047f541619a2202f9e43b20b3d7c0a96dEli Friedman return 0; 181f6a943e047f541619a2202f9e43b20b3d7c0a96dEli Friedman} 182f6a943e047f541619a2202f9e43b20b3d7c0a96dEli Friedman 18330ec9972be5a5af1f7a2277360dfa3aa1540b4faDevang Patelconst llvm::Type *CodeGenTypes::ConvertNewType(QualType T) { 184e27ec8ad56dbf1efb2de004b90fbbb86f740e3f1John McCall const clang::Type &Ty = *Context.getCanonicalType(T).getTypePtr(); 1851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Ty.getTypeClass()) { 18772564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor#define TYPE(Class, Base) 18872564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor#define ABSTRACT_TYPE(Class, Base) 18972564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor#define NON_CANONICAL_TYPE(Class, Base) case Type::Class: 19072564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor#define DEPENDENT_TYPE(Class, Base) case Type::Class: 191ad5e73887052193afda72db8efcb812bd083a4a8John McCall#define NON_CANONICAL_UNLESS_DEPENDENT_TYPE(Class, Base) case Type::Class: 19272564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor#include "clang/AST/TypeNodes.def" 19372564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor assert(false && "Non-canonical or dependent types aren't possible."); 19472564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor break; 19572564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor 1965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Type::Builtin: { 1975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (cast<BuiltinType>(Ty).getKind()) { 1985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::Void: 199de2e22d33afec98324a66a358dfe0951b3c7259aSteve Naroff case BuiltinType::ObjCId: 200de2e22d33afec98324a66a358dfe0951b3c7259aSteve Naroff case BuiltinType::ObjCClass: 20113dcd00615de5c4279d97bdf63cd5f0a14fd9dccFariborz Jahanian case BuiltinType::ObjCSel: 2025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // LLVM void type can only be used as the result of a function call. Just 2035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // map to the same as char. 2040032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::IntegerType::get(getLLVMContext(), 8); 2055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::Bool: 20719009e6fe7e0f51d2e49f4c94928a048c11c5281Chris Lattner // Note that we always return bool as i1 for use as a scalar type. 2080032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::Type::getInt1Ty(getLLVMContext()); 2091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 210d2d2a11a91d7ddf468bfb70f66362d24806ed601Chris Lattner case BuiltinType::Char_S: 211d2d2a11a91d7ddf468bfb70f66362d24806ed601Chris Lattner case BuiltinType::Char_U: 212d2d2a11a91d7ddf468bfb70f66362d24806ed601Chris Lattner case BuiltinType::SChar: 213d2d2a11a91d7ddf468bfb70f66362d24806ed601Chris Lattner case BuiltinType::UChar: 2145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::Short: 2155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::UShort: 2165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::Int: 2175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::UInt: 2185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::Long: 2195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::ULong: 2205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::LongLong: 2215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::ULongLong: 222afef76e43a30380b3c612a674738f2f574c8f166Argyrios Kyrtzidis case BuiltinType::WChar: 223f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith case BuiltinType::Char16: 224f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith case BuiltinType::Char32: 2250032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::IntegerType::get(getLLVMContext(), 22698be4943e8dc4f3905629a7102668960873cf863Chris Lattner static_cast<unsigned>(Context.getTypeSize(T))); 2271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 228f6a943e047f541619a2202f9e43b20b3d7c0a96dEli Friedman case BuiltinType::Float: 229c8b1227fa8c17d9881815e40c04e19334be536f8Nate Begeman case BuiltinType::Double: 2305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::LongDouble: 2311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return getTypeForFormat(getLLVMContext(), 2320032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson Context.getFloatTypeSemantics(T)); 2331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 234c1eb14a66fdd955aff3f957a5843295f27952bddAnders Carlsson case BuiltinType::NullPtr: { 235c1eb14a66fdd955aff3f957a5843295f27952bddAnders Carlsson // Model std::nullptr_t as i8* 236c1eb14a66fdd955aff3f957a5843295f27952bddAnders Carlsson const llvm::Type *Ty = llvm::IntegerType::get(getLLVMContext(), 8); 237c1eb14a66fdd955aff3f957a5843295f27952bddAnders Carlsson return llvm::PointerType::getUnqual(Ty); 238c1eb14a66fdd955aff3f957a5843295f27952bddAnders Carlsson } 239c1eb14a66fdd955aff3f957a5843295f27952bddAnders Carlsson 2402df9ced9fd1e8c7d7b38443db07e0e811de22571Chris Lattner case BuiltinType::UInt128: 2412df9ced9fd1e8c7d7b38443db07e0e811de22571Chris Lattner case BuiltinType::Int128: 2420032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::IntegerType::get(getLLVMContext(), 128); 2438c69235d21dfb067efb530a8cf1f35d633394270Eli Friedman 2448c69235d21dfb067efb530a8cf1f35d633394270Eli Friedman case BuiltinType::Overload: 2458c69235d21dfb067efb530a8cf1f35d633394270Eli Friedman case BuiltinType::Dependent: 2468c69235d21dfb067efb530a8cf1f35d633394270Eli Friedman case BuiltinType::UndeducedAuto: 2478c69235d21dfb067efb530a8cf1f35d633394270Eli Friedman assert(0 && "Unexpected builtin type!"); 2488c69235d21dfb067efb530a8cf1f35d633394270Eli Friedman break; 2495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2508c69235d21dfb067efb530a8cf1f35d633394270Eli Friedman assert(0 && "Unknown builtin type!"); 2515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Type::Complex: { 2541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::Type *EltTy = 255fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner ConvertTypeRecursive(cast<ComplexType>(Ty).getElementType()); 25647a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson return llvm::StructType::get(TheModule.getContext(), EltTy, EltTy, NULL); 2575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2587c80bd64032e610c0dbd74fc0ef6ea334447f2fdSebastian Redl case Type::LValueReference: 2597c80bd64032e610c0dbd74fc0ef6ea334447f2fdSebastian Redl case Type::RValueReference: { 2606aeae7fa9cfaacba3a4077d62c01c2531d88a63eDaniel Dunbar const ReferenceType &RTy = cast<ReferenceType>(Ty); 2616aeae7fa9cfaacba3a4077d62c01c2531d88a63eDaniel Dunbar QualType ETy = RTy.getPointeeType(); 2628c8f69ec1477424e11faef6b235505584d61e522Owen Anderson llvm::OpaqueType *PointeeType = llvm::OpaqueType::get(getLLVMContext()); 2636aeae7fa9cfaacba3a4077d62c01c2531d88a63eDaniel Dunbar PointersToResolve.push_back(std::make_pair(ETy, PointeeType)); 2646aeae7fa9cfaacba3a4077d62c01c2531d88a63eDaniel Dunbar return llvm::PointerType::get(PointeeType, ETy.getAddressSpace()); 2656aeae7fa9cfaacba3a4077d62c01c2531d88a63eDaniel Dunbar } 2665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Type::Pointer: { 2676aeae7fa9cfaacba3a4077d62c01c2531d88a63eDaniel Dunbar const PointerType &PTy = cast<PointerType>(Ty); 268fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner QualType ETy = PTy.getPointeeType(); 2698c8f69ec1477424e11faef6b235505584d61e522Owen Anderson llvm::OpaqueType *PointeeType = llvm::OpaqueType::get(getLLVMContext()); 2706aeae7fa9cfaacba3a4077d62c01c2531d88a63eDaniel Dunbar PointersToResolve.push_back(std::make_pair(ETy, PointeeType)); 271fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner return llvm::PointerType::get(PointeeType, ETy.getAddressSpace()); 2725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 274fb22d96692c5240fb8d611290dbf7eeed3759c73Steve Naroff case Type::VariableArray: { 275fb22d96692c5240fb8d611290dbf7eeed3759c73Steve Naroff const VariableArrayType &A = cast<VariableArrayType>(Ty); 2760953e767ff7817f97b3ab20896b229891eeff45bJohn McCall assert(A.getIndexTypeCVRQualifiers() == 0 && 2775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "FIXME: We only handle trivial array types so far!"); 278c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman // VLAs resolve to the innermost element type; this matches 279c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman // the return of alloca, and there isn't any obviously better choice. 28057a84fb51de4f3de50debcf12dd194af8c6aaa58Eli Friedman return ConvertTypeForMemRecursive(A.getElementType()); 281c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman } 282c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman case Type::IncompleteArray: { 283c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman const IncompleteArrayType &A = cast<IncompleteArrayType>(Ty); 2840953e767ff7817f97b3ab20896b229891eeff45bJohn McCall assert(A.getIndexTypeCVRQualifiers() == 0 && 285c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman "FIXME: We only handle trivial array types so far!"); 286c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman // int X[] -> [0 x int] 28757a84fb51de4f3de50debcf12dd194af8c6aaa58Eli Friedman return llvm::ArrayType::get(ConvertTypeForMemRecursive(A.getElementType()), 0); 2885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 289fb22d96692c5240fb8d611290dbf7eeed3759c73Steve Naroff case Type::ConstantArray: { 290fb22d96692c5240fb8d611290dbf7eeed3759c73Steve Naroff const ConstantArrayType &A = cast<ConstantArrayType>(Ty); 29157a84fb51de4f3de50debcf12dd194af8c6aaa58Eli Friedman const llvm::Type *EltTy = ConvertTypeForMemRecursive(A.getElementType()); 292fb22d96692c5240fb8d611290dbf7eeed3759c73Steve Naroff return llvm::ArrayType::get(EltTy, A.getSize().getZExtValue()); 293fb22d96692c5240fb8d611290dbf7eeed3759c73Steve Naroff } 294213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman case Type::ExtVector: 2955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Type::Vector: { 2965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const VectorType &VT = cast<VectorType>(Ty); 297fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner return llvm::VectorType::get(ConvertTypeRecursive(VT.getElementType()), 2985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer VT.getNumElements()); 2995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Type::FunctionNoProto: 301bb36d331f439f49859efcfb4435c61762fbba6f9Daniel Dunbar case Type::FunctionProto: { 302b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // First, check whether we can build the full function type. 303b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman if (const TagType* TT = VerifyFuncTypeComplete(&Ty)) { 304b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // This function's type depends on an incomplete tag type; make sure 305b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // we have an opaque type corresponding to the tag type. 306b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman ConvertTagDeclType(TT->getDecl()); 307b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // Create an opaque type for this function type, save it, and return it. 3088c8f69ec1477424e11faef6b235505584d61e522Owen Anderson llvm::Type *ResultType = llvm::OpaqueType::get(getLLVMContext()); 309b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman FunctionTypes.insert(std::make_pair(&Ty, ResultType)); 310b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman return ResultType; 311b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman } 312b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // The function type can be built; call the appropriate routines to 313b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // build it. 3149a1a9c41cf7e2735f059bb0c1d85f3207f637b22Chris Lattner if (const FunctionProtoType *FPT = dyn_cast<FunctionProtoType>(&Ty)) 315ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall return GetFunctionType(getFunctionInfo( 316ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall CanQual<FunctionProtoType>::CreateUnsafe(QualType(FPT,0))), 317ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall FPT->isVariadic()); 3189a1a9c41cf7e2735f059bb0c1d85f3207f637b22Chris Lattner 3199a1a9c41cf7e2735f059bb0c1d85f3207f637b22Chris Lattner const FunctionNoProtoType *FNPT = cast<FunctionNoProtoType>(&Ty); 320ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall return GetFunctionType(getFunctionInfo( 321ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall CanQual<FunctionNoProtoType>::CreateUnsafe(QualType(FNPT,0))), 322ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall true); 323bb36d331f439f49859efcfb4435c61762fbba6f9Daniel Dunbar } 3241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 325c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall case Type::ObjCObject: 326c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall return ConvertTypeRecursive(cast<ObjCObjectType>(Ty).getBaseType()); 327c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall 328391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner case Type::ObjCInterface: { 329412f59b23fc502b199b9ca96c72ef5d5ad21d62bDaniel Dunbar // Objective-C interfaces are always opaque (outside of the 330412f59b23fc502b199b9ca96c72ef5d5ad21d62bDaniel Dunbar // runtime, which can do whatever it likes); we never refine 331412f59b23fc502b199b9ca96c72ef5d5ad21d62bDaniel Dunbar // these. 332412f59b23fc502b199b9ca96c72ef5d5ad21d62bDaniel Dunbar const llvm::Type *&T = InterfaceTypes[cast<ObjCInterfaceType>(&Ty)]; 333412f59b23fc502b199b9ca96c72ef5d5ad21d62bDaniel Dunbar if (!T) 3348c8f69ec1477424e11faef6b235505584d61e522Owen Anderson T = llvm::OpaqueType::get(getLLVMContext()); 335412f59b23fc502b199b9ca96c72ef5d5ad21d62bDaniel Dunbar return T; 336391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner } 3371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 33814108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff case Type::ObjCObjectPointer: { 33928e478010eb4d789da85c6378dbfa9d66b95830bDaniel Dunbar // Protocol qualifications do not influence the LLVM type, we just return a 34028e478010eb4d789da85c6378dbfa9d66b95830bDaniel Dunbar // pointer to the underlying interface type. We don't need to worry about 34128e478010eb4d789da85c6378dbfa9d66b95830bDaniel Dunbar // recursive conversion. 3421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::Type *T = 34328e478010eb4d789da85c6378dbfa9d66b95830bDaniel Dunbar ConvertTypeRecursive(cast<ObjCObjectPointerType>(Ty).getPointeeType()); 34428e478010eb4d789da85c6378dbfa9d66b95830bDaniel Dunbar return llvm::PointerType::getUnqual(T); 34514108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff } 34628e478010eb4d789da85c6378dbfa9d66b95830bDaniel Dunbar 34772564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor case Type::Record: 34872564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor case Type::Enum: { 349de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner const TagDecl *TD = cast<TagType>(Ty).getDecl(); 3508fb1dd005f4cb530bca11d622362d39727294420Chris Lattner const llvm::Type *Res = ConvertTagDeclType(TD); 3511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 352de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner std::string TypeName(TD->getKindName()); 353de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner TypeName += '.'; 3541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 355de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner // Name the codegen type after the typedef name 356de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner // if there is no tag type name available 357de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner if (TD->getIdentifier()) 3586b7fc1344d440b2378d7a1825046c60617cadae2Anders Carlsson // FIXME: We should not have to check for a null decl context here. 3596b7fc1344d440b2378d7a1825046c60617cadae2Anders Carlsson // Right now we do it because the implicit Obj-C decls don't have one. 3606b7fc1344d440b2378d7a1825046c60617cadae2Anders Carlsson TypeName += TD->getDeclContext() ? TD->getQualifiedNameAsString() : 3616b7fc1344d440b2378d7a1825046c60617cadae2Anders Carlsson TD->getNameAsString(); 362de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner else if (const TypedefType *TdT = dyn_cast<TypedefType>(T)) 3636b7fc1344d440b2378d7a1825046c60617cadae2Anders Carlsson // FIXME: We should not have to check for a null decl context here. 3646b7fc1344d440b2378d7a1825046c60617cadae2Anders Carlsson // Right now we do it because the implicit Obj-C decls don't have one. 3656b7fc1344d440b2378d7a1825046c60617cadae2Anders Carlsson TypeName += TdT->getDecl()->getDeclContext() ? 3666b7fc1344d440b2378d7a1825046c60617cadae2Anders Carlsson TdT->getDecl()->getQualifiedNameAsString() : 3676b7fc1344d440b2378d7a1825046c60617cadae2Anders Carlsson TdT->getDecl()->getNameAsString(); 368de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner else 369de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner TypeName += "anon"; 3701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TheModule.addTypeName(TypeName, Res); 372de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner return Res; 373de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner } 3749048891ff983d0681c116c6e8f1073aa31bdd6e8Daniel Dunbar 3759048891ff983d0681c116c6e8f1073aa31bdd6e8Daniel Dunbar case Type::BlockPointer: { 3764e174f1b1e95faacc21da2eac70f7853807f3ea3Daniel Dunbar const QualType FTy = cast<BlockPointerType>(Ty).getPointeeType(); 3778c8f69ec1477424e11faef6b235505584d61e522Owen Anderson llvm::OpaqueType *PointeeType = llvm::OpaqueType::get(getLLVMContext()); 378209bb438042ef7652b2b046e43d4ffb5a00d9725Fariborz Jahanian PointersToResolve.push_back(std::make_pair(FTy, PointeeType)); 379209bb438042ef7652b2b046e43d4ffb5a00d9725Fariborz Jahanian return llvm::PointerType::get(PointeeType, FTy.getAddressSpace()); 3809048891ff983d0681c116c6e8f1073aa31bdd6e8Daniel Dunbar } 381424c51d3d4bea87291919b75e73ca59386702ad5Sebastian Redl 3820e650017acdbbeb0c590e77bbea88c200ea1caefAnders Carlsson case Type::MemberPointer: { 3830e650017acdbbeb0c590e77bbea88c200ea1caefAnders Carlsson // FIXME: This is ABI dependent. We use the Itanium C++ ABI. 3840e650017acdbbeb0c590e77bbea88c200ea1caefAnders Carlsson // http://www.codesourcery.com/public/cxx-abi/abi.html#member-pointers 3850e650017acdbbeb0c590e77bbea88c200ea1caefAnders Carlsson // If we ever want to support other ABIs this needs to be abstracted. 3860e650017acdbbeb0c590e77bbea88c200ea1caefAnders Carlsson 3870e650017acdbbeb0c590e77bbea88c200ea1caefAnders Carlsson QualType ETy = cast<MemberPointerType>(Ty).getPointeeType(); 3884a2251bb06a03166e34b509ca840b36f816c4081Eli Friedman const llvm::Type *PtrDiffTy = 3894a2251bb06a03166e34b509ca840b36f816c4081Eli Friedman ConvertTypeRecursive(Context.getPointerDiffType()); 3906f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner if (ETy->isFunctionType()) 3914a2251bb06a03166e34b509ca840b36f816c4081Eli Friedman return llvm::StructType::get(TheModule.getContext(), PtrDiffTy, PtrDiffTy, 3920e650017acdbbeb0c590e77bbea88c200ea1caefAnders Carlsson NULL); 3936f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner return PtrDiffTy; 3940e650017acdbbeb0c590e77bbea88c200ea1caefAnders Carlsson } 3955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // FIXME: implement. 3988c8f69ec1477424e11faef6b235505584d61e522Owen Anderson return llvm::OpaqueType::get(getLLVMContext()); 3995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 4005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 401fc3b8e9c1381d5e6ec361591d649c56a870ff971Chris Lattner/// ConvertTagDeclType - Lay out a tagged decl type like struct or union or 402fc3b8e9c1381d5e6ec361591d649c56a870ff971Chris Lattner/// enum. 4038fb1dd005f4cb530bca11d622362d39727294420Chris Lattnerconst llvm::Type *CodeGenTypes::ConvertTagDeclType(const TagDecl *TD) { 404efb6d0dc3eafbcf4f8cd053138bd1abed1dda8d4Daniel Dunbar // TagDecl's are not necessarily unique, instead use the (clang) 405efb6d0dc3eafbcf4f8cd053138bd1abed1dda8d4Daniel Dunbar // type connected to the decl. 4061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const Type *Key = 407e607ed068334bacb8d7b093996b4671c6ca79e25Mike Stump Context.getTagDeclType(TD).getTypePtr(); 4081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::DenseMap<const Type*, llvm::PATypeHolder>::iterator TDTI = 409efb6d0dc3eafbcf4f8cd053138bd1abed1dda8d4Daniel Dunbar TagDeclTypes.find(Key); 4101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4115de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner // If we've already compiled this tag type, use the previous definition. 4125de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner if (TDTI != TagDeclTypes.end()) 413fc3b8e9c1381d5e6ec361591d649c56a870ff971Chris Lattner return TDTI->second; 4141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4155cfa011e61e14e6f2e1659047d809706c0e4c6a3John McCall // If this is still a forward declaration, just define an opaque 4165cfa011e61e14e6f2e1659047d809706c0e4c6a3John McCall // type to use for this tagged decl. 417fc3b8e9c1381d5e6ec361591d649c56a870ff971Chris Lattner if (!TD->isDefinition()) { 4188c8f69ec1477424e11faef6b235505584d61e522Owen Anderson llvm::Type *ResultType = llvm::OpaqueType::get(getLLVMContext()); 419efb6d0dc3eafbcf4f8cd053138bd1abed1dda8d4Daniel Dunbar TagDeclTypes.insert(std::make_pair(Key, ResultType)); 4205de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner return ResultType; 4215de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner } 4221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4235de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner // Okay, this is a definition of a type. Compile the implementation now. 4241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4256f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner if (TD->isEnum()) // Don't bother storing enums in TagDeclTypes. 426fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner return ConvertTypeRecursive(cast<EnumDecl>(TD)->getIntegerType()); 4271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4285de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner // This decl could well be recursive. In this case, insert an opaque 4295de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner // definition of this type, which the recursive uses will get. We will then 4305de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner // refine this opaque version later. 4315de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner 4325de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner // Create new OpaqueType now for later use in case this is a recursive 4335de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner // type. This will later be refined to the actual type. 4348c8f69ec1477424e11faef6b235505584d61e522Owen Anderson llvm::PATypeHolder ResultHolder = llvm::OpaqueType::get(getLLVMContext()); 435efb6d0dc3eafbcf4f8cd053138bd1abed1dda8d4Daniel Dunbar TagDeclTypes.insert(std::make_pair(Key, ResultHolder)); 4361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4375de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner const RecordDecl *RD = cast<const RecordDecl>(TD); 438ae287239879386b9abf6da50a67bbb7fe81897f1Daniel Dunbar 43986ff308724171494395a840fd2efbe25e62f352eJohn McCall // Force conversion of non-virtual base classes recursively. 44086ff308724171494395a840fd2efbe25e62f352eJohn McCall if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(TD)) { 44186ff308724171494395a840fd2efbe25e62f352eJohn McCall for (CXXRecordDecl::base_class_const_iterator i = RD->bases_begin(), 44286ff308724171494395a840fd2efbe25e62f352eJohn McCall e = RD->bases_end(); i != e; ++i) { 44386ff308724171494395a840fd2efbe25e62f352eJohn McCall if (!i->isVirtual()) { 44486ff308724171494395a840fd2efbe25e62f352eJohn McCall const CXXRecordDecl *Base = 44586ff308724171494395a840fd2efbe25e62f352eJohn McCall cast<CXXRecordDecl>(i->getType()->getAs<RecordType>()->getDecl()); 44686ff308724171494395a840fd2efbe25e62f352eJohn McCall ConvertTagDeclType(Base); 44786ff308724171494395a840fd2efbe25e62f352eJohn McCall } 44886ff308724171494395a840fd2efbe25e62f352eJohn McCall } 44986ff308724171494395a840fd2efbe25e62f352eJohn McCall } 45086ff308724171494395a840fd2efbe25e62f352eJohn McCall 451696798febaf1f69020cdf7474b91e71736c5aa69Anders Carlsson // Layout fields. 452270e203b50ed8791e61afd357596bcf050cf2bfdDaniel Dunbar CGRecordLayout *Layout = ComputeRecordLayout(RD); 4531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 454696798febaf1f69020cdf7474b91e71736c5aa69Anders Carlsson CGRecordLayouts[Key] = Layout; 4556f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner const llvm::Type *ResultType = Layout->getLLVMType(); 4561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4575de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner // Refine our Opaque type to ResultType. This can invalidate ResultType, so 4585de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner // make sure to read the result out of the holder. 4595de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner cast<llvm::OpaqueType>(ResultHolder.get()) 4605de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner ->refineAbstractTypeTo(ResultType); 4611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4625de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner return ResultHolder.get(); 4631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} 464fc3b8e9c1381d5e6ec361591d649c56a870ff971Chris Lattner 46588a981b47c7face1b1fdaa9074256245107b9ca9Devang Patel/// getCGRecordLayout - Return record layout info for the given llvm::Type. 466ad3e7118c40711faf5f51f08d599dbd525d3408aAnders Carlssonconst CGRecordLayout & 4677c465b9e19453789e8be470ee0ddfba3d74b6310Daniel DunbarCodeGenTypes::getCGRecordLayout(const RecordDecl *TD) const { 4686f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner const Type *Key = Context.getTagDeclType(TD).getTypePtr(); 469270e203b50ed8791e61afd357596bcf050cf2bfdDaniel Dunbar const CGRecordLayout *Layout = CGRecordLayouts.lookup(Key); 470270e203b50ed8791e61afd357596bcf050cf2bfdDaniel Dunbar assert(Layout && "Unable to find record layout information for type"); 471270e203b50ed8791e61afd357596bcf050cf2bfdDaniel Dunbar return *Layout; 472b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang Patel} 4733e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson 4743e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlssonbool CodeGenTypes::ContainsPointerToDataMember(QualType T) { 4753e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson // No need to check for member pointers when not compiling C++. 4763e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson if (!Context.getLangOptions().CPlusPlus) 4773e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson return false; 4783e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson 4793e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson T = Context.getBaseElementType(T); 4803e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson 4813e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson if (const RecordType *RT = T->getAs<RecordType>()) { 4823e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson const CXXRecordDecl *RD = cast<CXXRecordDecl>(RT->getDecl()); 4833e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson 484c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson return ContainsPointerToDataMember(RD); 4853e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson } 4863e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson 4873e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson if (const MemberPointerType *MPT = T->getAs<MemberPointerType>()) 4883e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson return !MPT->getPointeeType()->isFunctionType(); 4893e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson 4903e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson return false; 4913e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson} 492c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson 493c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlssonbool CodeGenTypes::ContainsPointerToDataMember(const CXXRecordDecl *RD) { 494c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson 495c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson // FIXME: It would be better if there was a way to explicitly compute the 496c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson // record layout instead of converting to a type. 497c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson ConvertTagDeclType(RD); 498c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson 499c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson const CGRecordLayout &Layout = getCGRecordLayout(RD); 500c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson return Layout.containsPointerToDataMember(); 501c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson} 502