CodeGenTypes.cpp revision a9fa85841102e81daaa23650d89b120fe9dacedc
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 45a9fa85841102e81daaa23650d89b120fe9dacedcChris Lattner/// HandleLateResolvedPointers - For top-level ConvertType calls, this handles 46a9fa85841102e81daaa23650d89b120fe9dacedcChris Lattner/// pointers that are referenced but have not been converted yet. This is used 47a9fa85841102e81daaa23650d89b120fe9dacedcChris Lattner/// to handle cyclic structures properly. 48a9fa85841102e81daaa23650d89b120fe9dacedcChris Lattnervoid CodeGenTypes::HandleLateResolvedPointers() { 49a9fa85841102e81daaa23650d89b120fe9dacedcChris Lattner assert(!PointersToResolve.empty() && "No pointers to resolve!"); 50bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner 51bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner // Any pointers that were converted deferred evaluation of their pointee type, 52fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner // creating an opaque type instead. This is in order to avoid problems with 53fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner // circular types. Loop through all these defered pointees, if any, and 54fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner // resolve them now. 55fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner while (!PointersToResolve.empty()) { 566f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner std::pair<QualType, llvm::OpaqueType*> P = PointersToResolve.pop_back_val(); 576f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner 58fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner // We can handle bare pointers here because we know that the only pointers 59fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner // to the Opaque type are P.second and from other types. Refining the 60fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner // opqaue type away will invalidate P.second, but we don't mind :). 6157a84fb51de4f3de50debcf12dd194af8c6aaa58Eli Friedman const llvm::Type *NT = ConvertTypeForMemRecursive(P.first); 62fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner P.second->refineAbstractTypeTo(NT); 63fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner } 64a9fa85841102e81daaa23650d89b120fe9dacedcChris Lattner} 65fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner 66a9fa85841102e81daaa23650d89b120fe9dacedcChris Lattner 67a9fa85841102e81daaa23650d89b120fe9dacedcChris Lattner/// ConvertType - Convert the specified type to its LLVM form. 68a9fa85841102e81daaa23650d89b120fe9dacedcChris Lattnerconst llvm::Type *CodeGenTypes::ConvertType(QualType T, bool IsRecursive) { 69a9fa85841102e81daaa23650d89b120fe9dacedcChris Lattner const llvm::Type *Result = ConvertTypeRecursive(T); 70a9fa85841102e81daaa23650d89b120fe9dacedcChris Lattner 71a9fa85841102e81daaa23650d89b120fe9dacedcChris Lattner // If this is a top-level call to ConvertType and sub-conversions caused 72a9fa85841102e81daaa23650d89b120fe9dacedcChris Lattner // pointers to get lazily built as opaque types, resolve the pointers, which 73a9fa85841102e81daaa23650d89b120fe9dacedcChris Lattner // might cause Result to be merged away. 74a9fa85841102e81daaa23650d89b120fe9dacedcChris Lattner if (!IsRecursive && !PointersToResolve.empty()) { 75a9fa85841102e81daaa23650d89b120fe9dacedcChris Lattner llvm::PATypeHolder ResultHandle = Result; 76a9fa85841102e81daaa23650d89b120fe9dacedcChris Lattner HandleLateResolvedPointers(); 77a9fa85841102e81daaa23650d89b120fe9dacedcChris Lattner Result = ResultHandle; 78a9fa85841102e81daaa23650d89b120fe9dacedcChris Lattner } 79fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner return Result; 80fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner} 81fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner 82fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattnerconst llvm::Type *CodeGenTypes::ConvertTypeRecursive(QualType T) { 8309dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner T = Context.getCanonicalType(T); 841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8530ec9972be5a5af1f7a2277360dfa3aa1540b4faDevang Patel // See if type is already cached. 860ffe89ab1e4890899e0e11a6f68223567a69b38aDevang Patel llvm::DenseMap<Type *, llvm::PATypeHolder>::iterator 879619662a1d42e2008b865d3459c0677e149dad1bChris Lattner I = TypeCache.find(T.getTypePtr()); 883c40085b373d8e6e4523812e06f73a0cb9d5142cDevang Patel // If type is found in map and this is not a definition for a opaque 89fae6e2994a51d8ec1e61b6eb68765247c83b1ccfChris Lattner // place holder type then use it. Otherwise, convert type T. 904581fff8af09a156a9dcc4de62587385c5da9574Chris Lattner if (I != TypeCache.end()) 9147c87b4b160d45285b24b1b7f4e3cbaaed3dc464Devang Patel return I->second.get(); 9230ec9972be5a5af1f7a2277360dfa3aa1540b4faDevang Patel 9330ec9972be5a5af1f7a2277360dfa3aa1540b4faDevang Patel const llvm::Type *ResultType = ConvertNewType(T); 941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TypeCache.insert(std::make_pair(T.getTypePtr(), 954581fff8af09a156a9dcc4de62587385c5da9574Chris Lattner llvm::PATypeHolder(ResultType))); 9630ec9972be5a5af1f7a2277360dfa3aa1540b4faDevang Patel return ResultType; 9730ec9972be5a5af1f7a2277360dfa3aa1540b4faDevang Patel} 9830ec9972be5a5af1f7a2277360dfa3aa1540b4faDevang Patel 994581fff8af09a156a9dcc4de62587385c5da9574Chris Lattner/// ConvertTypeForMem - Convert type T into a llvm::Type. This differs from 1004581fff8af09a156a9dcc4de62587385c5da9574Chris Lattner/// ConvertType in that it is used to convert to the memory representation for 1014581fff8af09a156a9dcc4de62587385c5da9574Chris Lattner/// a type. For example, the scalar representation for _Bool is i1, but the 1024581fff8af09a156a9dcc4de62587385c5da9574Chris Lattner/// memory representation is usually i8 or i32, depending on the target. 103bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattnerconst llvm::Type *CodeGenTypes::ConvertTypeForMem(QualType T, bool IsRecursive){ 104bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner const llvm::Type *R = ConvertType(T, IsRecursive); 1051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10619009e6fe7e0f51d2e49f4c94928a048c11c5281Chris Lattner // If this is a non-bool type, don't map it. 107f177d9d6c27fbbcee8c00fd90b8306985c03c54aDuncan Sands if (!R->isIntegerTy(1)) 10819009e6fe7e0f51d2e49f4c94928a048c11c5281Chris Lattner return R; 1091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11019009e6fe7e0f51d2e49f4c94928a048c11c5281Chris Lattner // Otherwise, return an integer of the target-specified size. 1110032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::IntegerType::get(getLLVMContext(), 1120032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson (unsigned)Context.getTypeSize(T)); 1131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11419009e6fe7e0f51d2e49f4c94928a048c11c5281Chris Lattner} 11519009e6fe7e0f51d2e49f4c94928a048c11c5281Chris Lattner 116b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman// Code to verify a given function type is complete, i.e. the return type 117b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman// and all of the argument types are complete. 118c00129a08c829bb34f22dc13727043c994c85644Eli Friedmanconst TagType *CodeGenTypes::VerifyFuncTypeComplete(const Type* T) { 119b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman const FunctionType *FT = cast<FunctionType>(T); 1206217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek if (const TagType* TT = FT->getResultType()->getAs<TagType>()) 121b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman if (!TT->getDecl()->isDefinition()) 122b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman return TT; 123b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman if (const FunctionProtoType *FPT = dyn_cast<FunctionProtoType>(T)) 124b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman for (unsigned i = 0; i < FPT->getNumArgs(); i++) 1256217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek if (const TagType* TT = FPT->getArgType(i)->getAs<TagType>()) 126b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman if (!TT->getDecl()->isDefinition()) 127b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman return TT; 128b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman return 0; 129b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman} 130b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman 131c5b8806cda286cf41866176ef98011fdaa68da01Chris Lattner/// UpdateCompletedType - When we find the full definition for a TagDecl, 132c5b8806cda286cf41866176ef98011fdaa68da01Chris Lattner/// replace the 'opaque' type we previously made for it if applicable. 133c5b8806cda286cf41866176ef98011fdaa68da01Chris Lattnervoid CodeGenTypes::UpdateCompletedType(const TagDecl *TD) { 134e607ed068334bacb8d7b093996b4671c6ca79e25Mike Stump const Type *Key = Context.getTagDeclType(TD).getTypePtr(); 1351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::DenseMap<const Type*, llvm::PATypeHolder>::iterator TDTI = 136efb6d0dc3eafbcf4f8cd053138bd1abed1dda8d4Daniel Dunbar TagDeclTypes.find(Key); 1376ef58e36bbbfa232fe8b50309361e841985abfc6Chris Lattner if (TDTI == TagDeclTypes.end()) return; 1381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1396ef58e36bbbfa232fe8b50309361e841985abfc6Chris Lattner // Remember the opaque LLVM type for this tagdecl. 140d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner llvm::PATypeHolder OpaqueHolder = TDTI->second; 141d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner assert(isa<llvm::OpaqueType>(OpaqueHolder.get()) && 1426ef58e36bbbfa232fe8b50309361e841985abfc6Chris Lattner "Updating compilation of an already non-opaque type?"); 1431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 144d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner // Remove it from TagDeclTypes so that it will be regenerated. 145d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner TagDeclTypes.erase(TDTI); 146d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner 1478fb1dd005f4cb530bca11d622362d39727294420Chris Lattner // Generate the new type. 1488fb1dd005f4cb530bca11d622362d39727294420Chris Lattner const llvm::Type *NT = ConvertTagDeclType(TD); 149d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner 1508fb1dd005f4cb530bca11d622362d39727294420Chris Lattner // Refine the old opaque type to its new definition. 1518fb1dd005f4cb530bca11d622362d39727294420Chris Lattner cast<llvm::OpaqueType>(OpaqueHolder.get())->refineAbstractTypeTo(NT); 152b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman 153b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // Since we just completed a tag type, check to see if any function types 154b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // were completed along with the tag type. 155b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // FIXME: This is very inefficient; if we track which function types depend 156b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // on which tag types, though, it should be reasonably efficient. 157b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman llvm::DenseMap<const Type*, llvm::PATypeHolder>::iterator i; 158b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman for (i = FunctionTypes.begin(); i != FunctionTypes.end(); ++i) { 159b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman if (const TagType* TT = VerifyFuncTypeComplete(i->first)) { 160b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // This function type still depends on an incomplete tag type; make sure 161b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // that tag type has an associated opaque type. 162b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman ConvertTagDeclType(TT->getDecl()); 163b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman } else { 164b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // This function no longer depends on an incomplete tag type; create the 165b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // function type, and refine the opaque type to the new function type. 166b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman llvm::PATypeHolder OpaqueHolder = i->second; 167b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman const llvm::Type *NFT = ConvertNewType(QualType(i->first, 0)); 168b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman cast<llvm::OpaqueType>(OpaqueHolder.get())->refineAbstractTypeTo(NFT); 169b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman FunctionTypes.erase(i); 170b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman } 171b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman } 172d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner} 173d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner 1741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpstatic const llvm::Type* getTypeForFormat(llvm::LLVMContext &VMContext, 1750032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson const llvm::fltSemantics &format) { 176b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner if (&format == &llvm::APFloat::IEEEsingle) 1770032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::Type::getFloatTy(VMContext); 178b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner if (&format == &llvm::APFloat::IEEEdouble) 1790032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::Type::getDoubleTy(VMContext); 180b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner if (&format == &llvm::APFloat::IEEEquad) 1810032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::Type::getFP128Ty(VMContext); 182b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner if (&format == &llvm::APFloat::PPCDoubleDouble) 1830032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::Type::getPPC_FP128Ty(VMContext); 184b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner if (&format == &llvm::APFloat::x87DoubleExtended) 1850032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::Type::getX86_FP80Ty(VMContext); 186b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner assert(0 && "Unknown float format!"); 187f6a943e047f541619a2202f9e43b20b3d7c0a96dEli Friedman return 0; 188f6a943e047f541619a2202f9e43b20b3d7c0a96dEli Friedman} 189f6a943e047f541619a2202f9e43b20b3d7c0a96dEli Friedman 19030ec9972be5a5af1f7a2277360dfa3aa1540b4faDevang Patelconst llvm::Type *CodeGenTypes::ConvertNewType(QualType T) { 191e27ec8ad56dbf1efb2de004b90fbbb86f740e3f1John McCall const clang::Type &Ty = *Context.getCanonicalType(T).getTypePtr(); 1921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Ty.getTypeClass()) { 19472564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor#define TYPE(Class, Base) 19572564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor#define ABSTRACT_TYPE(Class, Base) 19672564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor#define NON_CANONICAL_TYPE(Class, Base) case Type::Class: 19772564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor#define DEPENDENT_TYPE(Class, Base) case Type::Class: 198ad5e73887052193afda72db8efcb812bd083a4a8John McCall#define NON_CANONICAL_UNLESS_DEPENDENT_TYPE(Class, Base) case Type::Class: 19972564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor#include "clang/AST/TypeNodes.def" 20072564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor assert(false && "Non-canonical or dependent types aren't possible."); 20172564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor break; 20272564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor 2035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Type::Builtin: { 2045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (cast<BuiltinType>(Ty).getKind()) { 2055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::Void: 206de2e22d33afec98324a66a358dfe0951b3c7259aSteve Naroff case BuiltinType::ObjCId: 207de2e22d33afec98324a66a358dfe0951b3c7259aSteve Naroff case BuiltinType::ObjCClass: 20813dcd00615de5c4279d97bdf63cd5f0a14fd9dccFariborz Jahanian case BuiltinType::ObjCSel: 2095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // LLVM void type can only be used as the result of a function call. Just 2105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // map to the same as char. 21177b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner return llvm::Type::getInt8Ty(getLLVMContext()); 2125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::Bool: 21419009e6fe7e0f51d2e49f4c94928a048c11c5281Chris Lattner // Note that we always return bool as i1 for use as a scalar type. 2150032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::Type::getInt1Ty(getLLVMContext()); 2161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 217d2d2a11a91d7ddf468bfb70f66362d24806ed601Chris Lattner case BuiltinType::Char_S: 218d2d2a11a91d7ddf468bfb70f66362d24806ed601Chris Lattner case BuiltinType::Char_U: 219d2d2a11a91d7ddf468bfb70f66362d24806ed601Chris Lattner case BuiltinType::SChar: 220d2d2a11a91d7ddf468bfb70f66362d24806ed601Chris Lattner case BuiltinType::UChar: 2215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::Short: 2225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::UShort: 2235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::Int: 2245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::UInt: 2255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::Long: 2265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::ULong: 2275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::LongLong: 2285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::ULongLong: 229afef76e43a30380b3c612a674738f2f574c8f166Argyrios Kyrtzidis case BuiltinType::WChar: 230f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith case BuiltinType::Char16: 231f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith case BuiltinType::Char32: 2320032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::IntegerType::get(getLLVMContext(), 23398be4943e8dc4f3905629a7102668960873cf863Chris Lattner static_cast<unsigned>(Context.getTypeSize(T))); 2341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 235f6a943e047f541619a2202f9e43b20b3d7c0a96dEli Friedman case BuiltinType::Float: 236c8b1227fa8c17d9881815e40c04e19334be536f8Nate Begeman case BuiltinType::Double: 2375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::LongDouble: 2381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return getTypeForFormat(getLLVMContext(), 2390032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson Context.getFloatTypeSemantics(T)); 2401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 241c1eb14a66fdd955aff3f957a5843295f27952bddAnders Carlsson case BuiltinType::NullPtr: { 242c1eb14a66fdd955aff3f957a5843295f27952bddAnders Carlsson // Model std::nullptr_t as i8* 24377b89b87c3b9220fea1bc80f6d6598d2003cc8a8Chris Lattner const llvm::Type *Ty = llvm::Type::getInt8Ty(getLLVMContext()); 244c1eb14a66fdd955aff3f957a5843295f27952bddAnders Carlsson return llvm::PointerType::getUnqual(Ty); 245c1eb14a66fdd955aff3f957a5843295f27952bddAnders Carlsson } 246c1eb14a66fdd955aff3f957a5843295f27952bddAnders Carlsson 2472df9ced9fd1e8c7d7b38443db07e0e811de22571Chris Lattner case BuiltinType::UInt128: 2482df9ced9fd1e8c7d7b38443db07e0e811de22571Chris Lattner case BuiltinType::Int128: 2490032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::IntegerType::get(getLLVMContext(), 128); 2508c69235d21dfb067efb530a8cf1f35d633394270Eli Friedman 2518c69235d21dfb067efb530a8cf1f35d633394270Eli Friedman case BuiltinType::Overload: 2528c69235d21dfb067efb530a8cf1f35d633394270Eli Friedman case BuiltinType::Dependent: 2538c69235d21dfb067efb530a8cf1f35d633394270Eli Friedman case BuiltinType::UndeducedAuto: 2548c69235d21dfb067efb530a8cf1f35d633394270Eli Friedman assert(0 && "Unexpected builtin type!"); 2558c69235d21dfb067efb530a8cf1f35d633394270Eli Friedman break; 2565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2578c69235d21dfb067efb530a8cf1f35d633394270Eli Friedman assert(0 && "Unknown builtin type!"); 2585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Type::Complex: { 2611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::Type *EltTy = 262fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner ConvertTypeRecursive(cast<ComplexType>(Ty).getElementType()); 26347a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson return llvm::StructType::get(TheModule.getContext(), EltTy, EltTy, NULL); 2645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2657c80bd64032e610c0dbd74fc0ef6ea334447f2fdSebastian Redl case Type::LValueReference: 2667c80bd64032e610c0dbd74fc0ef6ea334447f2fdSebastian Redl case Type::RValueReference: { 2676aeae7fa9cfaacba3a4077d62c01c2531d88a63eDaniel Dunbar const ReferenceType &RTy = cast<ReferenceType>(Ty); 2686aeae7fa9cfaacba3a4077d62c01c2531d88a63eDaniel Dunbar QualType ETy = RTy.getPointeeType(); 2698c8f69ec1477424e11faef6b235505584d61e522Owen Anderson llvm::OpaqueType *PointeeType = llvm::OpaqueType::get(getLLVMContext()); 2706aeae7fa9cfaacba3a4077d62c01c2531d88a63eDaniel Dunbar PointersToResolve.push_back(std::make_pair(ETy, PointeeType)); 2716aeae7fa9cfaacba3a4077d62c01c2531d88a63eDaniel Dunbar return llvm::PointerType::get(PointeeType, ETy.getAddressSpace()); 2726aeae7fa9cfaacba3a4077d62c01c2531d88a63eDaniel Dunbar } 2735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Type::Pointer: { 2746aeae7fa9cfaacba3a4077d62c01c2531d88a63eDaniel Dunbar const PointerType &PTy = cast<PointerType>(Ty); 275fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner QualType ETy = PTy.getPointeeType(); 2768c8f69ec1477424e11faef6b235505584d61e522Owen Anderson llvm::OpaqueType *PointeeType = llvm::OpaqueType::get(getLLVMContext()); 2776aeae7fa9cfaacba3a4077d62c01c2531d88a63eDaniel Dunbar PointersToResolve.push_back(std::make_pair(ETy, PointeeType)); 278fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner return llvm::PointerType::get(PointeeType, ETy.getAddressSpace()); 2795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 281fb22d96692c5240fb8d611290dbf7eeed3759c73Steve Naroff case Type::VariableArray: { 282fb22d96692c5240fb8d611290dbf7eeed3759c73Steve Naroff const VariableArrayType &A = cast<VariableArrayType>(Ty); 2830953e767ff7817f97b3ab20896b229891eeff45bJohn McCall assert(A.getIndexTypeCVRQualifiers() == 0 && 2845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "FIXME: We only handle trivial array types so far!"); 285c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman // VLAs resolve to the innermost element type; this matches 286c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman // the return of alloca, and there isn't any obviously better choice. 28757a84fb51de4f3de50debcf12dd194af8c6aaa58Eli Friedman return ConvertTypeForMemRecursive(A.getElementType()); 288c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman } 289c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman case Type::IncompleteArray: { 290c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman const IncompleteArrayType &A = cast<IncompleteArrayType>(Ty); 2910953e767ff7817f97b3ab20896b229891eeff45bJohn McCall assert(A.getIndexTypeCVRQualifiers() == 0 && 292c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman "FIXME: We only handle trivial array types so far!"); 293c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman // int X[] -> [0 x int] 294bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner return llvm::ArrayType::get(ConvertTypeForMemRecursive(A.getElementType()), 295bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner 0); 2965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 297fb22d96692c5240fb8d611290dbf7eeed3759c73Steve Naroff case Type::ConstantArray: { 298fb22d96692c5240fb8d611290dbf7eeed3759c73Steve Naroff const ConstantArrayType &A = cast<ConstantArrayType>(Ty); 29957a84fb51de4f3de50debcf12dd194af8c6aaa58Eli Friedman const llvm::Type *EltTy = ConvertTypeForMemRecursive(A.getElementType()); 300fb22d96692c5240fb8d611290dbf7eeed3759c73Steve Naroff return llvm::ArrayType::get(EltTy, A.getSize().getZExtValue()); 301fb22d96692c5240fb8d611290dbf7eeed3759c73Steve Naroff } 302213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman case Type::ExtVector: 3035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Type::Vector: { 3045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const VectorType &VT = cast<VectorType>(Ty); 305fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner return llvm::VectorType::get(ConvertTypeRecursive(VT.getElementType()), 3065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer VT.getNumElements()); 3075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Type::FunctionNoProto: 309bb36d331f439f49859efcfb4435c61762fbba6f9Daniel Dunbar case Type::FunctionProto: { 310bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner // First, check whether we can build the full function type. If the 311bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner // function type depends on an incomplete type (e.g. a struct or enum), we 312bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner // cannot lower the function type. Instead, turn it into an Opaque pointer 313bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner // and have UpdateCompletedType revisit the function type when/if the opaque 314bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner // argument type is defined. 315ce93399f26f23735b8e291321f18ad54f64cb58aChris Lattner if (const TagType *TT = VerifyFuncTypeComplete(&Ty)) { 316b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // This function's type depends on an incomplete tag type; make sure 317b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // we have an opaque type corresponding to the tag type. 318b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman ConvertTagDeclType(TT->getDecl()); 319b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // Create an opaque type for this function type, save it, and return it. 3208c8f69ec1477424e11faef6b235505584d61e522Owen Anderson llvm::Type *ResultType = llvm::OpaqueType::get(getLLVMContext()); 321b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman FunctionTypes.insert(std::make_pair(&Ty, ResultType)); 322b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman return ResultType; 323b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman } 324bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner 325b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // The function type can be built; call the appropriate routines to 326b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // build it. 327bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner const CGFunctionInfo *FI; 328bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner bool isVariadic; 329bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner if (const FunctionProtoType *FPT = dyn_cast<FunctionProtoType>(&Ty)) { 330bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner FI = &getFunctionInfo( 331bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner CanQual<FunctionProtoType>::CreateUnsafe(QualType(FPT, 0)), 332bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner true /*Recursive*/); 333bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner isVariadic = FPT->isVariadic(); 334bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner } else { 335bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner const FunctionNoProtoType *FNPT = cast<FunctionNoProtoType>(&Ty); 336bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner FI = &getFunctionInfo( 337bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner CanQual<FunctionNoProtoType>::CreateUnsafe(QualType(FNPT, 0)), 338bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner true /*Recursive*/); 339bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner isVariadic = true; 340bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner } 341bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner 342bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner return GetFunctionType(*FI, isVariadic, true); 343bb36d331f439f49859efcfb4435c61762fbba6f9Daniel Dunbar } 3441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 345c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall case Type::ObjCObject: 346c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall return ConvertTypeRecursive(cast<ObjCObjectType>(Ty).getBaseType()); 347c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall 348391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner case Type::ObjCInterface: { 349412f59b23fc502b199b9ca96c72ef5d5ad21d62bDaniel Dunbar // Objective-C interfaces are always opaque (outside of the 350412f59b23fc502b199b9ca96c72ef5d5ad21d62bDaniel Dunbar // runtime, which can do whatever it likes); we never refine 351412f59b23fc502b199b9ca96c72ef5d5ad21d62bDaniel Dunbar // these. 352412f59b23fc502b199b9ca96c72ef5d5ad21d62bDaniel Dunbar const llvm::Type *&T = InterfaceTypes[cast<ObjCInterfaceType>(&Ty)]; 353412f59b23fc502b199b9ca96c72ef5d5ad21d62bDaniel Dunbar if (!T) 3548c8f69ec1477424e11faef6b235505584d61e522Owen Anderson T = llvm::OpaqueType::get(getLLVMContext()); 355412f59b23fc502b199b9ca96c72ef5d5ad21d62bDaniel Dunbar return T; 356391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner } 3571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 35814108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff case Type::ObjCObjectPointer: { 35928e478010eb4d789da85c6378dbfa9d66b95830bDaniel Dunbar // Protocol qualifications do not influence the LLVM type, we just return a 36028e478010eb4d789da85c6378dbfa9d66b95830bDaniel Dunbar // pointer to the underlying interface type. We don't need to worry about 36128e478010eb4d789da85c6378dbfa9d66b95830bDaniel Dunbar // recursive conversion. 3621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::Type *T = 36328e478010eb4d789da85c6378dbfa9d66b95830bDaniel Dunbar ConvertTypeRecursive(cast<ObjCObjectPointerType>(Ty).getPointeeType()); 36428e478010eb4d789da85c6378dbfa9d66b95830bDaniel Dunbar return llvm::PointerType::getUnqual(T); 36514108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff } 36628e478010eb4d789da85c6378dbfa9d66b95830bDaniel Dunbar 36772564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor case Type::Record: 36872564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor case Type::Enum: { 369de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner const TagDecl *TD = cast<TagType>(Ty).getDecl(); 3708fb1dd005f4cb530bca11d622362d39727294420Chris Lattner const llvm::Type *Res = ConvertTagDeclType(TD); 3711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 372de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner std::string TypeName(TD->getKindName()); 373de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner TypeName += '.'; 3741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 375de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner // Name the codegen type after the typedef name 376de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner // if there is no tag type name available 377de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner if (TD->getIdentifier()) 3786b7fc1344d440b2378d7a1825046c60617cadae2Anders Carlsson // FIXME: We should not have to check for a null decl context here. 3796b7fc1344d440b2378d7a1825046c60617cadae2Anders Carlsson // Right now we do it because the implicit Obj-C decls don't have one. 3806b7fc1344d440b2378d7a1825046c60617cadae2Anders Carlsson TypeName += TD->getDeclContext() ? TD->getQualifiedNameAsString() : 3816b7fc1344d440b2378d7a1825046c60617cadae2Anders Carlsson TD->getNameAsString(); 382de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner else if (const TypedefType *TdT = dyn_cast<TypedefType>(T)) 3836b7fc1344d440b2378d7a1825046c60617cadae2Anders Carlsson // FIXME: We should not have to check for a null decl context here. 3846b7fc1344d440b2378d7a1825046c60617cadae2Anders Carlsson // Right now we do it because the implicit Obj-C decls don't have one. 3856b7fc1344d440b2378d7a1825046c60617cadae2Anders Carlsson TypeName += TdT->getDecl()->getDeclContext() ? 3866b7fc1344d440b2378d7a1825046c60617cadae2Anders Carlsson TdT->getDecl()->getQualifiedNameAsString() : 3876b7fc1344d440b2378d7a1825046c60617cadae2Anders Carlsson TdT->getDecl()->getNameAsString(); 388de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner else 389de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner TypeName += "anon"; 3901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TheModule.addTypeName(TypeName, Res); 392de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner return Res; 393de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner } 3949048891ff983d0681c116c6e8f1073aa31bdd6e8Daniel Dunbar 3959048891ff983d0681c116c6e8f1073aa31bdd6e8Daniel Dunbar case Type::BlockPointer: { 3964e174f1b1e95faacc21da2eac70f7853807f3ea3Daniel Dunbar const QualType FTy = cast<BlockPointerType>(Ty).getPointeeType(); 3978c8f69ec1477424e11faef6b235505584d61e522Owen Anderson llvm::OpaqueType *PointeeType = llvm::OpaqueType::get(getLLVMContext()); 398209bb438042ef7652b2b046e43d4ffb5a00d9725Fariborz Jahanian PointersToResolve.push_back(std::make_pair(FTy, PointeeType)); 399209bb438042ef7652b2b046e43d4ffb5a00d9725Fariborz Jahanian return llvm::PointerType::get(PointeeType, FTy.getAddressSpace()); 4009048891ff983d0681c116c6e8f1073aa31bdd6e8Daniel Dunbar } 401424c51d3d4bea87291919b75e73ca59386702ad5Sebastian Redl 4020e650017acdbbeb0c590e77bbea88c200ea1caefAnders Carlsson case Type::MemberPointer: { 4030e650017acdbbeb0c590e77bbea88c200ea1caefAnders Carlsson // FIXME: This is ABI dependent. We use the Itanium C++ ABI. 4040e650017acdbbeb0c590e77bbea88c200ea1caefAnders Carlsson // http://www.codesourcery.com/public/cxx-abi/abi.html#member-pointers 4050e650017acdbbeb0c590e77bbea88c200ea1caefAnders Carlsson // If we ever want to support other ABIs this needs to be abstracted. 4060e650017acdbbeb0c590e77bbea88c200ea1caefAnders Carlsson 4070e650017acdbbeb0c590e77bbea88c200ea1caefAnders Carlsson QualType ETy = cast<MemberPointerType>(Ty).getPointeeType(); 4084a2251bb06a03166e34b509ca840b36f816c4081Eli Friedman const llvm::Type *PtrDiffTy = 4094a2251bb06a03166e34b509ca840b36f816c4081Eli Friedman ConvertTypeRecursive(Context.getPointerDiffType()); 4106f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner if (ETy->isFunctionType()) 4114a2251bb06a03166e34b509ca840b36f816c4081Eli Friedman return llvm::StructType::get(TheModule.getContext(), PtrDiffTy, PtrDiffTy, 4120e650017acdbbeb0c590e77bbea88c200ea1caefAnders Carlsson NULL); 4136f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner return PtrDiffTy; 4140e650017acdbbeb0c590e77bbea88c200ea1caefAnders Carlsson } 4155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 4161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // FIXME: implement. 4188c8f69ec1477424e11faef6b235505584d61e522Owen Anderson return llvm::OpaqueType::get(getLLVMContext()); 4195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 4205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 421fc3b8e9c1381d5e6ec361591d649c56a870ff971Chris Lattner/// ConvertTagDeclType - Lay out a tagged decl type like struct or union or 422fc3b8e9c1381d5e6ec361591d649c56a870ff971Chris Lattner/// enum. 4238fb1dd005f4cb530bca11d622362d39727294420Chris Lattnerconst llvm::Type *CodeGenTypes::ConvertTagDeclType(const TagDecl *TD) { 424efb6d0dc3eafbcf4f8cd053138bd1abed1dda8d4Daniel Dunbar // TagDecl's are not necessarily unique, instead use the (clang) 425efb6d0dc3eafbcf4f8cd053138bd1abed1dda8d4Daniel Dunbar // type connected to the decl. 4261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const Type *Key = 427e607ed068334bacb8d7b093996b4671c6ca79e25Mike Stump Context.getTagDeclType(TD).getTypePtr(); 4281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::DenseMap<const Type*, llvm::PATypeHolder>::iterator TDTI = 429efb6d0dc3eafbcf4f8cd053138bd1abed1dda8d4Daniel Dunbar TagDeclTypes.find(Key); 4301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4315de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner // If we've already compiled this tag type, use the previous definition. 4325de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner if (TDTI != TagDeclTypes.end()) 433fc3b8e9c1381d5e6ec361591d649c56a870ff971Chris Lattner return TDTI->second; 4341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4355cfa011e61e14e6f2e1659047d809706c0e4c6a3John McCall // If this is still a forward declaration, just define an opaque 4365cfa011e61e14e6f2e1659047d809706c0e4c6a3John McCall // type to use for this tagged decl. 437fc3b8e9c1381d5e6ec361591d649c56a870ff971Chris Lattner if (!TD->isDefinition()) { 4388c8f69ec1477424e11faef6b235505584d61e522Owen Anderson llvm::Type *ResultType = llvm::OpaqueType::get(getLLVMContext()); 439efb6d0dc3eafbcf4f8cd053138bd1abed1dda8d4Daniel Dunbar TagDeclTypes.insert(std::make_pair(Key, ResultType)); 4405de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner return ResultType; 4415de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner } 4421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4435de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner // Okay, this is a definition of a type. Compile the implementation now. 4441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4456f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner if (TD->isEnum()) // Don't bother storing enums in TagDeclTypes. 446fce71b8ea53b6eb9c1630da24659289bc848f837Chris Lattner return ConvertTypeRecursive(cast<EnumDecl>(TD)->getIntegerType()); 4471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4485de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner // This decl could well be recursive. In this case, insert an opaque 4495de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner // definition of this type, which the recursive uses will get. We will then 4505de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner // refine this opaque version later. 4515de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner 4525de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner // Create new OpaqueType now for later use in case this is a recursive 4535de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner // type. This will later be refined to the actual type. 4548c8f69ec1477424e11faef6b235505584d61e522Owen Anderson llvm::PATypeHolder ResultHolder = llvm::OpaqueType::get(getLLVMContext()); 455efb6d0dc3eafbcf4f8cd053138bd1abed1dda8d4Daniel Dunbar TagDeclTypes.insert(std::make_pair(Key, ResultHolder)); 4561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4575de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner const RecordDecl *RD = cast<const RecordDecl>(TD); 458ae287239879386b9abf6da50a67bbb7fe81897f1Daniel Dunbar 45986ff308724171494395a840fd2efbe25e62f352eJohn McCall // Force conversion of non-virtual base classes recursively. 46086ff308724171494395a840fd2efbe25e62f352eJohn McCall if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(TD)) { 46186ff308724171494395a840fd2efbe25e62f352eJohn McCall for (CXXRecordDecl::base_class_const_iterator i = RD->bases_begin(), 46286ff308724171494395a840fd2efbe25e62f352eJohn McCall e = RD->bases_end(); i != e; ++i) { 46386ff308724171494395a840fd2efbe25e62f352eJohn McCall if (!i->isVirtual()) { 46486ff308724171494395a840fd2efbe25e62f352eJohn McCall const CXXRecordDecl *Base = 46586ff308724171494395a840fd2efbe25e62f352eJohn McCall cast<CXXRecordDecl>(i->getType()->getAs<RecordType>()->getDecl()); 46686ff308724171494395a840fd2efbe25e62f352eJohn McCall ConvertTagDeclType(Base); 46786ff308724171494395a840fd2efbe25e62f352eJohn McCall } 46886ff308724171494395a840fd2efbe25e62f352eJohn McCall } 46986ff308724171494395a840fd2efbe25e62f352eJohn McCall } 47086ff308724171494395a840fd2efbe25e62f352eJohn McCall 471696798febaf1f69020cdf7474b91e71736c5aa69Anders Carlsson // Layout fields. 472270e203b50ed8791e61afd357596bcf050cf2bfdDaniel Dunbar CGRecordLayout *Layout = ComputeRecordLayout(RD); 4731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 474696798febaf1f69020cdf7474b91e71736c5aa69Anders Carlsson CGRecordLayouts[Key] = Layout; 4756f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner const llvm::Type *ResultType = Layout->getLLVMType(); 4761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4775de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner // Refine our Opaque type to ResultType. This can invalidate ResultType, so 4785de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner // make sure to read the result out of the holder. 4795de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner cast<llvm::OpaqueType>(ResultHolder.get()) 4805de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner ->refineAbstractTypeTo(ResultType); 4811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4825de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner return ResultHolder.get(); 4831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} 484fc3b8e9c1381d5e6ec361591d649c56a870ff971Chris Lattner 48588a981b47c7face1b1fdaa9074256245107b9ca9Devang Patel/// getCGRecordLayout - Return record layout info for the given llvm::Type. 486ad3e7118c40711faf5f51f08d599dbd525d3408aAnders Carlssonconst CGRecordLayout & 4877c465b9e19453789e8be470ee0ddfba3d74b6310Daniel DunbarCodeGenTypes::getCGRecordLayout(const RecordDecl *TD) const { 4886f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner const Type *Key = Context.getTagDeclType(TD).getTypePtr(); 489270e203b50ed8791e61afd357596bcf050cf2bfdDaniel Dunbar const CGRecordLayout *Layout = CGRecordLayouts.lookup(Key); 490270e203b50ed8791e61afd357596bcf050cf2bfdDaniel Dunbar assert(Layout && "Unable to find record layout information for type"); 491270e203b50ed8791e61afd357596bcf050cf2bfdDaniel Dunbar return *Layout; 492b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang Patel} 4933e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson 4943e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlssonbool CodeGenTypes::ContainsPointerToDataMember(QualType T) { 4953e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson // No need to check for member pointers when not compiling C++. 4963e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson if (!Context.getLangOptions().CPlusPlus) 4973e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson return false; 4983e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson 4993e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson T = Context.getBaseElementType(T); 5003e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson 5013e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson if (const RecordType *RT = T->getAs<RecordType>()) { 5023e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson const CXXRecordDecl *RD = cast<CXXRecordDecl>(RT->getDecl()); 5033e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson 504c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson return ContainsPointerToDataMember(RD); 5053e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson } 5063e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson 5073e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson if (const MemberPointerType *MPT = T->getAs<MemberPointerType>()) 5083e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson return !MPT->getPointeeType()->isFunctionType(); 5093e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson 5103e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson return false; 5113e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson} 512c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson 513c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlssonbool CodeGenTypes::ContainsPointerToDataMember(const CXXRecordDecl *RD) { 514c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson 515c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson // FIXME: It would be better if there was a way to explicitly compute the 516c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson // record layout instead of converting to a type. 517c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson ConvertTagDeclType(RD); 518c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson 519c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson const CGRecordLayout &Layout = getCGRecordLayout(RD); 520c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson return Layout.containsPointerToDataMember(); 521c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson} 522