CodeGenTypes.cpp revision 8dd5cdfc462026648b480adaf774e24bc620f7c3
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" 16f16aa103d3afd42fbca2ab346f191bf745cec092John McCall#include "CGCXXABI.h" 172924ade97ee4228fcf3518d89cd4bd1653236b48Daniel Dunbar#include "CGRecordLayout.h" 18de7fb8413b13651fd85b7125d08b3c9ac2816d9dDaniel Dunbar#include "clang/AST/ASTContext.h" 19c4a1dea2dc56bd1357ec91b829a0b9e68229a13eDaniel Dunbar#include "clang/AST/DeclObjC.h" 20742cd1b7bb86b52b23b335d47abbd842dac0e1bfFariborz Jahanian#include "clang/AST/DeclCXX.h" 21de7fb8413b13651fd85b7125d08b3c9ac2816d9dDaniel Dunbar#include "clang/AST/Expr.h" 2219cc4abea06a9b49e0e16a50d335c064cd723572Anders Carlsson#include "clang/AST/RecordLayout.h" 235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "llvm/DerivedTypes.h" 244e533287e6a9adac78c9ac370612581aad9b8c5eAnders Carlsson#include "llvm/Module.h" 25d9e9ede6b1703849da739629904dad197306e527Devang Patel#include "llvm/Target/TargetData.h" 265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace clang; 275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace CodeGen; 285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 297a4718e813e5e99d478567a482217c7eef8572c5Devang PatelCodeGenTypes::CodeGenTypes(ASTContext &Ctx, llvm::Module& M, 30f16aa103d3afd42fbca2ab346f191bf745cec092John McCall const llvm::TargetData &TD, const ABIInfo &Info, 3108d4792bb5d9e0e7f122c6273636807029c06aaaDaniel Dunbar CGCXXABI &CXXABI, const CodeGenOptions &CGO) 326b1da0ea19c12346192f5ea4d70872c13bfcc82aDaniel Dunbar : Context(Ctx), Target(Ctx.Target), TheModule(M), TheTargetData(TD), 3308d4792bb5d9e0e7f122c6273636807029c06aaaDaniel Dunbar TheABIInfo(Info), TheCXXABI(CXXABI), CodeGenOpts(CGO) { 34d2d2a11a91d7ddf468bfb70f66362d24806ed601Chris Lattner} 355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 36b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang PatelCodeGenTypes::~CodeGenTypes() { 371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (llvm::DenseMap<const Type *, CGRecordLayout *>::iterator 381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump I = CGRecordLayouts.begin(), E = CGRecordLayouts.end(); 39b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang Patel I != E; ++I) 40b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang Patel delete I->second; 416f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner 426f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner for (llvm::FoldingSet<CGFunctionInfo>::iterator 436f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner I = FunctionInfos.begin(), E = FunctionInfos.end(); I != E; ) 446f41c17ae854c8a26126e5ea1c3cd53bd746b7baChris Lattner delete &*I++; 45b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang Patel} 46b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang Patel 479cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattnervoid CodeGenTypes::addRecordTypeName(const RecordDecl *RD, 489cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::StructType *Ty, 49e0047b13f0025fa1588f1b776592ed3458b226d6Anders Carlsson llvm::StringRef suffix) { 50e9742b0f7281d0a21b79e661ec8879e01c4a02e4Anders Carlsson llvm::SmallString<256> TypeName; 51e9742b0f7281d0a21b79e661ec8879e01c4a02e4Anders Carlsson llvm::raw_svector_ostream OS(TypeName); 52e0047b13f0025fa1588f1b776592ed3458b226d6Anders Carlsson OS << RD->getKindName() << '.'; 53e9742b0f7281d0a21b79e661ec8879e01c4a02e4Anders Carlsson 54e9742b0f7281d0a21b79e661ec8879e01c4a02e4Anders Carlsson // Name the codegen type after the typedef name 55e9742b0f7281d0a21b79e661ec8879e01c4a02e4Anders Carlsson // if there is no tag type name available 56e0047b13f0025fa1588f1b776592ed3458b226d6Anders Carlsson if (RD->getIdentifier()) { 57e9742b0f7281d0a21b79e661ec8879e01c4a02e4Anders Carlsson // FIXME: We should not have to check for a null decl context here. 58e9742b0f7281d0a21b79e661ec8879e01c4a02e4Anders Carlsson // Right now we do it because the implicit Obj-C decls don't have one. 59e0047b13f0025fa1588f1b776592ed3458b226d6Anders Carlsson if (RD->getDeclContext()) 60e0047b13f0025fa1588f1b776592ed3458b226d6Anders Carlsson OS << RD->getQualifiedNameAsString(); 61e9742b0f7281d0a21b79e661ec8879e01c4a02e4Anders Carlsson else 62e0047b13f0025fa1588f1b776592ed3458b226d6Anders Carlsson RD->printName(OS); 63e0047b13f0025fa1588f1b776592ed3458b226d6Anders Carlsson } else if (const TypedefNameDecl *TDD = RD->getTypedefNameForAnonDecl()) { 64e9742b0f7281d0a21b79e661ec8879e01c4a02e4Anders Carlsson // FIXME: We should not have to check for a null decl context here. 65e9742b0f7281d0a21b79e661ec8879e01c4a02e4Anders Carlsson // Right now we do it because the implicit Obj-C decls don't have one. 66e9742b0f7281d0a21b79e661ec8879e01c4a02e4Anders Carlsson if (TDD->getDeclContext()) 67e9742b0f7281d0a21b79e661ec8879e01c4a02e4Anders Carlsson OS << TDD->getQualifiedNameAsString(); 68e9742b0f7281d0a21b79e661ec8879e01c4a02e4Anders Carlsson else 69e9742b0f7281d0a21b79e661ec8879e01c4a02e4Anders Carlsson TDD->printName(OS); 70e9742b0f7281d0a21b79e661ec8879e01c4a02e4Anders Carlsson } else 71e9742b0f7281d0a21b79e661ec8879e01c4a02e4Anders Carlsson OS << "anon"; 72e9742b0f7281d0a21b79e661ec8879e01c4a02e4Anders Carlsson 73e9742b0f7281d0a21b79e661ec8879e01c4a02e4Anders Carlsson if (!suffix.empty()) 74e9742b0f7281d0a21b79e661ec8879e01c4a02e4Anders Carlsson OS << suffix; 75e9742b0f7281d0a21b79e661ec8879e01c4a02e4Anders Carlsson 769cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner Ty->setName(OS.str()); 7730ec9972be5a5af1f7a2277360dfa3aa1540b4faDevang Patel} 7830ec9972be5a5af1f7a2277360dfa3aa1540b4faDevang Patel 794581fff8af09a156a9dcc4de62587385c5da9574Chris Lattner/// ConvertTypeForMem - Convert type T into a llvm::Type. This differs from 804581fff8af09a156a9dcc4de62587385c5da9574Chris Lattner/// ConvertType in that it is used to convert to the memory representation for 814581fff8af09a156a9dcc4de62587385c5da9574Chris Lattner/// a type. For example, the scalar representation for _Bool is i1, but the 824581fff8af09a156a9dcc4de62587385c5da9574Chris Lattner/// memory representation is usually i8 or i32, depending on the target. 839cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattnerllvm::Type *CodeGenTypes::ConvertTypeForMem(QualType T){ 849cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *R = ConvertType(T); 851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8619009e6fe7e0f51d2e49f4c94928a048c11c5281Chris Lattner // If this is a non-bool type, don't map it. 87f177d9d6c27fbbcee8c00fd90b8306985c03c54aDuncan Sands if (!R->isIntegerTy(1)) 8819009e6fe7e0f51d2e49f4c94928a048c11c5281Chris Lattner return R; 891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9019009e6fe7e0f51d2e49f4c94928a048c11c5281Chris Lattner // Otherwise, return an integer of the target-specified size. 910032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::IntegerType::get(getLLVMContext(), 920032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson (unsigned)Context.getTypeSize(T)); 931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9419009e6fe7e0f51d2e49f4c94928a048c11c5281Chris Lattner} 9519009e6fe7e0f51d2e49f4c94928a048c11c5281Chris Lattner 96b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman// Code to verify a given function type is complete, i.e. the return type 97b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman// and all of the argument types are complete. 98c00129a08c829bb34f22dc13727043c994c85644Eli Friedmanconst TagType *CodeGenTypes::VerifyFuncTypeComplete(const Type* T) { 99b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman const FunctionType *FT = cast<FunctionType>(T); 1006217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek if (const TagType* TT = FT->getResultType()->getAs<TagType>()) 101b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman if (!TT->getDecl()->isDefinition()) 102b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman return TT; 103b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman if (const FunctionProtoType *FPT = dyn_cast<FunctionProtoType>(T)) 1049cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner for (unsigned i = 0, e = FPT->getNumArgs(); i != e; i++) 1059cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner if (const TagType *TT = FPT->getArgType(i)->getAs<TagType>()) 106b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman if (!TT->getDecl()->isDefinition()) 107b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman return TT; 108b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman return 0; 109b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman} 110b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman 111c5b8806cda286cf41866176ef98011fdaa68da01Chris Lattner/// UpdateCompletedType - When we find the full definition for a TagDecl, 112c5b8806cda286cf41866176ef98011fdaa68da01Chris Lattner/// replace the 'opaque' type we previously made for it if applicable. 113c5b8806cda286cf41866176ef98011fdaa68da01Chris Lattnervoid CodeGenTypes::UpdateCompletedType(const TagDecl *TD) { 1149cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner // If this is an enum being completed, then we flush all non-struct types from 1159cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner // the cache. This allows function types and other things that may be derived 1169cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner // from the enum to be recomputed. 1178dd5cdfc462026648b480adaf774e24bc620f7c3Chris Lattner if (const EnumDecl *ED = dyn_cast<EnumDecl>(TD)) { 1188dd5cdfc462026648b480adaf774e24bc620f7c3Chris Lattner // Only flush the cache if we've actually already converted this type. 1198dd5cdfc462026648b480adaf774e24bc620f7c3Chris Lattner if (TypeCache.count(ED->getTypeForDecl())) 1208dd5cdfc462026648b480adaf774e24bc620f7c3Chris Lattner TypeCache.clear(); 1219cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner return; 122b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman } 1239cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner 1249cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner const RecordDecl *RD = cast<RecordDecl>(TD); 1259cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner if (!RD->isDependentType()) 1269cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ConvertRecordDeclType(RD); 127d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner} 128d86e6bc7ab4388a578daf46e7c76be9122a25072Chris Lattner 1299cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattnerstatic llvm::Type *getTypeForFormat(llvm::LLVMContext &VMContext, 1309cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner const llvm::fltSemantics &format) { 131b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner if (&format == &llvm::APFloat::IEEEsingle) 1320032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::Type::getFloatTy(VMContext); 133b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner if (&format == &llvm::APFloat::IEEEdouble) 1340032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::Type::getDoubleTy(VMContext); 135b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner if (&format == &llvm::APFloat::IEEEquad) 1360032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::Type::getFP128Ty(VMContext); 137b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner if (&format == &llvm::APFloat::PPCDoubleDouble) 1380032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::Type::getPPC_FP128Ty(VMContext); 139b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner if (&format == &llvm::APFloat::x87DoubleExtended) 1400032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson return llvm::Type::getX86_FP80Ty(VMContext); 141b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner assert(0 && "Unknown float format!"); 142f6a943e047f541619a2202f9e43b20b3d7c0a96dEli Friedman return 0; 143f6a943e047f541619a2202f9e43b20b3d7c0a96dEli Friedman} 144f6a943e047f541619a2202f9e43b20b3d7c0a96dEli Friedman 1459cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner/// ConvertType - Convert the specified type to its LLVM form. 1469cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattnerllvm::Type *CodeGenTypes::ConvertType(QualType T) { 1479cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner T = Context.getCanonicalType(T); 1489cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner 1499cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner const Type *Ty = T.getTypePtr(); 1501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1519cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner // RecordTypes are cached and processed specially. 1529cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner if (const RecordType *RT = dyn_cast<RecordType>(Ty)) 1539cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner return ConvertRecordDeclType(RT->getDecl()); 1549cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner 1559cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner // See if type is already cached. 1569cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::DenseMap<const Type *, llvm::Type *>::iterator TCI = TypeCache.find(Ty); 1579cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner // If type is found in map then use it. Otherwise, convert type T. 1589cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner if (TCI != TypeCache.end()) 1599cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner return TCI->second; 1609cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner 1619cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner // If we don't have it in the cache, convert it now. 1629cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *ResultType = 0; 1639cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner switch (Ty->getTypeClass()) { 1649cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner case Type::Record: // Handled above. 16572564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor#define TYPE(Class, Base) 16672564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor#define ABSTRACT_TYPE(Class, Base) 16772564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor#define NON_CANONICAL_TYPE(Class, Base) case Type::Class: 16872564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor#define DEPENDENT_TYPE(Class, Base) case Type::Class: 169ad5e73887052193afda72db8efcb812bd083a4a8John McCall#define NON_CANONICAL_UNLESS_DEPENDENT_TYPE(Class, Base) case Type::Class: 17072564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor#include "clang/AST/TypeNodes.def" 171864c041e118155c2b1ce0ba36942a3da5a4a055eJohn McCall llvm_unreachable("Non-canonical or dependent types aren't possible."); 17272564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor break; 17372564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor 1745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Type::Builtin: { 1759cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner switch (cast<BuiltinType>(Ty)->getKind()) { 1765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::Void: 177de2e22d33afec98324a66a358dfe0951b3c7259aSteve Naroff case BuiltinType::ObjCId: 178de2e22d33afec98324a66a358dfe0951b3c7259aSteve Naroff case BuiltinType::ObjCClass: 17913dcd00615de5c4279d97bdf63cd5f0a14fd9dccFariborz Jahanian case BuiltinType::ObjCSel: 1805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // LLVM void type can only be used as the result of a function call. Just 1815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // map to the same as char. 1829cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ResultType = llvm::Type::getInt8Ty(getLLVMContext()); 1839cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner break; 1845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::Bool: 18619009e6fe7e0f51d2e49f4c94928a048c11c5281Chris Lattner // Note that we always return bool as i1 for use as a scalar type. 1879cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ResultType = llvm::Type::getInt1Ty(getLLVMContext()); 1889cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner break; 1891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 190d2d2a11a91d7ddf468bfb70f66362d24806ed601Chris Lattner case BuiltinType::Char_S: 191d2d2a11a91d7ddf468bfb70f66362d24806ed601Chris Lattner case BuiltinType::Char_U: 192d2d2a11a91d7ddf468bfb70f66362d24806ed601Chris Lattner case BuiltinType::SChar: 193d2d2a11a91d7ddf468bfb70f66362d24806ed601Chris Lattner case BuiltinType::UChar: 1945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::Short: 1955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::UShort: 1965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::Int: 1975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::UInt: 1985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::Long: 1995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::ULong: 2005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::LongLong: 2015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::ULongLong: 2023f59c975aa5d047f7edd1b900b5e885c38af0ef7Chris Lattner case BuiltinType::WChar_S: 2033f59c975aa5d047f7edd1b900b5e885c38af0ef7Chris Lattner case BuiltinType::WChar_U: 204f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith case BuiltinType::Char16: 205f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith case BuiltinType::Char32: 2069cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ResultType = llvm::IntegerType::get(getLLVMContext(), 2079cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner static_cast<unsigned>(Context.getTypeSize(T))); 2089cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner break; 2091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 210f6a943e047f541619a2202f9e43b20b3d7c0a96dEli Friedman case BuiltinType::Float: 211c8b1227fa8c17d9881815e40c04e19334be536f8Nate Begeman case BuiltinType::Double: 2125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case BuiltinType::LongDouble: 2139cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ResultType = getTypeForFormat(getLLVMContext(), 2149cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner Context.getFloatTypeSemantics(T)); 2159cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner break; 2161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2179cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner case BuiltinType::NullPtr: 218c1eb14a66fdd955aff3f957a5843295f27952bddAnders Carlsson // Model std::nullptr_t as i8* 2199cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ResultType = llvm::Type::getInt8PtrTy(getLLVMContext()); 2209cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner break; 221c1eb14a66fdd955aff3f957a5843295f27952bddAnders Carlsson 2222df9ced9fd1e8c7d7b38443db07e0e811de22571Chris Lattner case BuiltinType::UInt128: 2232df9ced9fd1e8c7d7b38443db07e0e811de22571Chris Lattner case BuiltinType::Int128: 2249cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ResultType = llvm::IntegerType::get(getLLVMContext(), 128); 2259cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner break; 2268c69235d21dfb067efb530a8cf1f35d633394270Eli Friedman 2278c69235d21dfb067efb530a8cf1f35d633394270Eli Friedman case BuiltinType::Overload: 2288c69235d21dfb067efb530a8cf1f35d633394270Eli Friedman case BuiltinType::Dependent: 229864c041e118155c2b1ce0ba36942a3da5a4a055eJohn McCall case BuiltinType::BoundMember: 2301de4d4e8cb2e9c88809fea8092bc6e835a5473d2John McCall case BuiltinType::UnknownAny: 231864c041e118155c2b1ce0ba36942a3da5a4a055eJohn McCall llvm_unreachable("Unexpected placeholder builtin type!"); 2328c69235d21dfb067efb530a8cf1f35d633394270Eli Friedman break; 2335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Type::Complex: { 2371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::Type *EltTy = 2389cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ConvertType(cast<ComplexType>(Ty)->getElementType()); 2399cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ResultType = llvm::StructType::get(EltTy, EltTy, NULL); 2409cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner break; 2415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2427c80bd64032e610c0dbd74fc0ef6ea334447f2fdSebastian Redl case Type::LValueReference: 2437c80bd64032e610c0dbd74fc0ef6ea334447f2fdSebastian Redl case Type::RValueReference: { 2449cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner RecursionStatePointerRAII X(RecursionState); 2459cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner const ReferenceType *RTy = cast<ReferenceType>(Ty); 2469cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner QualType ETy = RTy->getPointeeType(); 2479cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *PointeeType = ConvertTypeForMem(ETy); 248207f4d8543529221932af82836016a2ef066c917Peter Collingbourne unsigned AS = Context.getTargetAddressSpace(ETy); 2499cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ResultType = llvm::PointerType::get(PointeeType, AS); 2509cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner break; 2516aeae7fa9cfaacba3a4077d62c01c2531d88a63eDaniel Dunbar } 2525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Type::Pointer: { 2539cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner RecursionStatePointerRAII X(RecursionState); 2549cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner const PointerType *PTy = cast<PointerType>(Ty); 2559cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner QualType ETy = PTy->getPointeeType(); 2569cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *PointeeType = ConvertTypeForMem(ETy); 2579cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner if (PointeeType->isVoidTy()) 2589cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner PointeeType = llvm::Type::getInt8Ty(getLLVMContext()); 259207f4d8543529221932af82836016a2ef066c917Peter Collingbourne unsigned AS = Context.getTargetAddressSpace(ETy); 2609cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ResultType = llvm::PointerType::get(PointeeType, AS); 2619cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner break; 2625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 264fb22d96692c5240fb8d611290dbf7eeed3759c73Steve Naroff case Type::VariableArray: { 2659cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner const VariableArrayType *A = cast<VariableArrayType>(Ty); 2669cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner assert(A->getIndexTypeCVRQualifiers() == 0 && 2675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "FIXME: We only handle trivial array types so far!"); 268c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman // VLAs resolve to the innermost element type; this matches 269c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman // the return of alloca, and there isn't any obviously better choice. 2709cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ResultType = ConvertTypeForMem(A->getElementType()); 2719cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner break; 272c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman } 273c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman case Type::IncompleteArray: { 2749cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner const IncompleteArrayType *A = cast<IncompleteArrayType>(Ty); 2759cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner assert(A->getIndexTypeCVRQualifiers() == 0 && 276c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman "FIXME: We only handle trivial array types so far!"); 277c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman // int X[] -> [0 x int] 2789cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ResultType = llvm::ArrayType::get(ConvertTypeForMem(A->getElementType()),0); 2799cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner break; 2805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 281fb22d96692c5240fb8d611290dbf7eeed3759c73Steve Naroff case Type::ConstantArray: { 2829cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner const ConstantArrayType *A = cast<ConstantArrayType>(Ty); 2839cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner const llvm::Type *EltTy = ConvertTypeForMem(A->getElementType()); 2849cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ResultType = llvm::ArrayType::get(EltTy, A->getSize().getZExtValue()); 2859cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner break; 286fb22d96692c5240fb8d611290dbf7eeed3759c73Steve Naroff } 287213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman case Type::ExtVector: 2885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Type::Vector: { 2899cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner const VectorType *VT = cast<VectorType>(Ty); 2909cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ResultType = llvm::VectorType::get(ConvertType(VT->getElementType()), 2919cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner VT->getNumElements()); 2929cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner break; 2935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case Type::FunctionNoProto: 295bb36d331f439f49859efcfb4435c61762fbba6f9Daniel Dunbar case Type::FunctionProto: { 296bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner // First, check whether we can build the full function type. If the 297bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner // function type depends on an incomplete type (e.g. a struct or enum), we 2989cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner // cannot lower the function type. 2999cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner if (VerifyFuncTypeComplete(Ty)) { 3009cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner // This function's type depends on an incomplete tag type. 3019cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner // Return a placeholder type. 3029cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ResultType = llvm::StructType::get(getLLVMContext()); 3039cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner break; 304b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman } 3059cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner 306b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // The function type can be built; call the appropriate routines to 307b3b6b9b27ab8bdb2a435a5a92ce62e74e3399377Eli Friedman // build it. 308bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner const CGFunctionInfo *FI; 309bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner bool isVariadic; 3109cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner if (const FunctionProtoType *FPT = dyn_cast<FunctionProtoType>(Ty)) { 311bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner FI = &getFunctionInfo( 3129cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner CanQual<FunctionProtoType>::CreateUnsafe(QualType(FPT, 0))); 313bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner isVariadic = FPT->isVariadic(); 314bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner } else { 3159cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner const FunctionNoProtoType *FNPT = cast<FunctionNoProtoType>(Ty); 316bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner FI = &getFunctionInfo( 3179cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner CanQual<FunctionNoProtoType>::CreateUnsafe(QualType(FNPT, 0))); 318bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner isVariadic = true; 319bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner } 320bcaedaed309ce453a992fdeef4a4c908cc7d9dfbChris Lattner 3219cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ResultType = GetFunctionType(*FI, isVariadic); 3229cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner break; 323bb36d331f439f49859efcfb4435c61762fbba6f9Daniel Dunbar } 3241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 325c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall case Type::ObjCObject: 3269cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ResultType = ConvertType(cast<ObjCObjectType>(Ty)->getBaseType()); 3279cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner break; 328c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall 329391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner case Type::ObjCInterface: { 330412f59b23fc502b199b9ca96c72ef5d5ad21d62bDaniel Dunbar // Objective-C interfaces are always opaque (outside of the 331412f59b23fc502b199b9ca96c72ef5d5ad21d62bDaniel Dunbar // runtime, which can do whatever it likes); we never refine 332412f59b23fc502b199b9ca96c72ef5d5ad21d62bDaniel Dunbar // these. 3339cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *&T = InterfaceTypes[cast<ObjCInterfaceType>(Ty)]; 334412f59b23fc502b199b9ca96c72ef5d5ad21d62bDaniel Dunbar if (!T) 3359cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner T = llvm::StructType::createNamed(getLLVMContext(), ""); 3369cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ResultType = T; 3379cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner break; 338391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner } 3391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 34014108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff case Type::ObjCObjectPointer: { 3419cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner RecursionStatePointerRAII X(RecursionState); 34228e478010eb4d789da85c6378dbfa9d66b95830bDaniel Dunbar // Protocol qualifications do not influence the LLVM type, we just return a 34328e478010eb4d789da85c6378dbfa9d66b95830bDaniel Dunbar // pointer to the underlying interface type. We don't need to worry about 34428e478010eb4d789da85c6378dbfa9d66b95830bDaniel Dunbar // recursive conversion. 3451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::Type *T = 3469cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ConvertType(cast<ObjCObjectPointerType>(Ty)->getPointeeType()); 3479cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ResultType = T->getPointerTo(); 3489cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner break; 34914108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff } 35028e478010eb4d789da85c6378dbfa9d66b95830bDaniel Dunbar 3519cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner case Type::Enum: { 3529cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner const EnumDecl *ED = cast<EnumType>(Ty)->getDecl(); 3539cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner if (ED->isDefinition() || ED->isFixed()) 3549cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner return ConvertType(ED->getIntegerType()); 3559cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner // Return a placeholder '{}' type. 3569cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ResultType = llvm::StructType::get(getLLVMContext()); 3579cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner break; 358de0efb3b6eac36bdeae0e60f753a974cc4118a31Chris Lattner } 3599048891ff983d0681c116c6e8f1073aa31bdd6e8Daniel Dunbar 3609048891ff983d0681c116c6e8f1073aa31bdd6e8Daniel Dunbar case Type::BlockPointer: { 3619cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner RecursionStatePointerRAII X(RecursionState); 3629cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner const QualType FTy = cast<BlockPointerType>(Ty)->getPointeeType(); 3639cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *PointeeType = ConvertTypeForMem(FTy); 364207f4d8543529221932af82836016a2ef066c917Peter Collingbourne unsigned AS = Context.getTargetAddressSpace(FTy); 3659cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ResultType = llvm::PointerType::get(PointeeType, AS); 3669cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner break; 3679048891ff983d0681c116c6e8f1073aa31bdd6e8Daniel Dunbar } 368424c51d3d4bea87291919b75e73ca59386702ad5Sebastian Redl 3690e650017acdbbeb0c590e77bbea88c200ea1caefAnders Carlsson case Type::MemberPointer: { 3709cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ResultType = 3719cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner getCXXABI().ConvertMemberPointerType(cast<MemberPointerType>(Ty)); 3729cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner break; 3730e650017acdbbeb0c590e77bbea88c200ea1caefAnders Carlsson } 3745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3759cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner 3769cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner assert(ResultType && "Didn't convert a type?"); 3779cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner 3789cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner TypeCache[Ty] = ResultType; 3799cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner return ResultType; 3805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3829cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner/// ConvertRecordDeclType - Lay out a tagged decl type like struct or union. 3839cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattnerllvm::StructType *CodeGenTypes::ConvertRecordDeclType(const RecordDecl *RD) { 384efb6d0dc3eafbcf4f8cd053138bd1abed1dda8d4Daniel Dunbar // TagDecl's are not necessarily unique, instead use the (clang) 385efb6d0dc3eafbcf4f8cd053138bd1abed1dda8d4Daniel Dunbar // type connected to the decl. 3869cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner const Type *Key = Context.getTagDeclType(RD).getTypePtr(); 3871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3889cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::StructType *&Entry = RecordDeclTypes[Key]; 3891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3909cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner // If we don't have a StructType at all yet, create the forward declaration. 3919cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner if (Entry == 0) 3929cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner Entry = llvm::StructType::createNamed(getLLVMContext(), 3939cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner std::string(RD->getKindName()) + "." + 3949cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner RD->getQualifiedNameAsString()); 3959cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::StructType *Ty = Entry; 3965de00fcf7c923a14bb79bdbaabb2faeb5633d85aChris Lattner 3979cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner // If this is still a forward declaration, or the LLVM type is already 3989cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner // complete, there's nothing more to do. 3999cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner if (!RD->isDefinition() || !Ty->isOpaque()) 4009cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner return Ty; 4019cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner 4029cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner // If we're recursively nested inside the conversion of a pointer inside the 4039cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner // struct, defer conversion. 4049cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner if (RecursionState == RS_StructPointer) { 4059cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner DeferredRecords.push_back(RD); 4069cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner return Ty; 4079cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner } 4081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4099cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner // Okay, this is a definition of a type. Compile the implementation now. 4109cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner RecursionStateTy SavedRecursionState = RecursionState; 4119cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner RecursionState = RS_Struct; 412ae287239879386b9abf6da50a67bbb7fe81897f1Daniel Dunbar 41386ff308724171494395a840fd2efbe25e62f352eJohn McCall // Force conversion of non-virtual base classes recursively. 4149cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner if (const CXXRecordDecl *CRD = dyn_cast<CXXRecordDecl>(RD)) { 4159cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner for (CXXRecordDecl::base_class_const_iterator i = CRD->bases_begin(), 4169cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner e = CRD->bases_end(); i != e; ++i) { 41786ff308724171494395a840fd2efbe25e62f352eJohn McCall if (!i->isVirtual()) { 41886ff308724171494395a840fd2efbe25e62f352eJohn McCall const CXXRecordDecl *Base = 41986ff308724171494395a840fd2efbe25e62f352eJohn McCall cast<CXXRecordDecl>(i->getType()->getAs<RecordType>()->getDecl()); 4209cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ConvertRecordDeclType(Base); 42186ff308724171494395a840fd2efbe25e62f352eJohn McCall } 42286ff308724171494395a840fd2efbe25e62f352eJohn McCall } 42386ff308724171494395a840fd2efbe25e62f352eJohn McCall } 42486ff308724171494395a840fd2efbe25e62f352eJohn McCall 425696798febaf1f69020cdf7474b91e71736c5aa69Anders Carlsson // Layout fields. 4269cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner CGRecordLayout *Layout = ComputeRecordLayout(RD, Ty); 427696798febaf1f69020cdf7474b91e71736c5aa69Anders Carlsson CGRecordLayouts[Key] = Layout; 4281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4299cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner 4309cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner // Restore our recursion state. If we're done converting the outer-most 4319cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner // record, then convert any deferred structs as well. 4329cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner RecursionState = SavedRecursionState; 4339cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner if (RecursionState == RS_Normal) 4349cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner while (!DeferredRecords.empty()) 4359cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ConvertRecordDeclType(DeferredRecords.pop_back_val()); 4369cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner 4379cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner return Ty; 4381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} 439fc3b8e9c1381d5e6ec361591d649c56a870ff971Chris Lattner 4402d987772c2ba3bff93b9fbe7b73bf06eed2b1607Anders Carlsson/// getCGRecordLayout - Return record layout info for the given record decl. 441ad3e7118c40711faf5f51f08d599dbd525d3408aAnders Carlssonconst CGRecordLayout & 4422d987772c2ba3bff93b9fbe7b73bf06eed2b1607Anders CarlssonCodeGenTypes::getCGRecordLayout(const RecordDecl *RD) { 4432d987772c2ba3bff93b9fbe7b73bf06eed2b1607Anders Carlsson const Type *Key = Context.getTagDeclType(RD).getTypePtr(); 44482926963cccbc54bc707d5dcf79389166046ef08Anders Carlsson 445270e203b50ed8791e61afd357596bcf050cf2bfdDaniel Dunbar const CGRecordLayout *Layout = CGRecordLayouts.lookup(Key); 446c8f01ebbce3c874b43ee78535f7d179517f5f436Anders Carlsson if (!Layout) { 4472d987772c2ba3bff93b9fbe7b73bf06eed2b1607Anders Carlsson // Compute the type information. 4489cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ConvertRecordDeclType(RD); 449c8f01ebbce3c874b43ee78535f7d179517f5f436Anders Carlsson 450c8f01ebbce3c874b43ee78535f7d179517f5f436Anders Carlsson // Now try again. 451c8f01ebbce3c874b43ee78535f7d179517f5f436Anders Carlsson Layout = CGRecordLayouts.lookup(Key); 452c8f01ebbce3c874b43ee78535f7d179517f5f436Anders Carlsson } 453c8f01ebbce3c874b43ee78535f7d179517f5f436Anders Carlsson 454270e203b50ed8791e61afd357596bcf050cf2bfdDaniel Dunbar assert(Layout && "Unable to find record layout information for type"); 455270e203b50ed8791e61afd357596bcf050cf2bfdDaniel Dunbar return *Layout; 456b84a06e68ffd71da22e3c75b6e4bbdba37816413Devang Patel} 4573e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson 458f16aa103d3afd42fbca2ab346f191bf745cec092John McCallbool CodeGenTypes::isZeroInitializable(QualType T) { 4593e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson // No need to check for member pointers when not compiling C++. 4603e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson if (!Context.getLangOptions().CPlusPlus) 461f16aa103d3afd42fbca2ab346f191bf745cec092John McCall return true; 4623e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson 4633e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson T = Context.getBaseElementType(T); 4643e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson 465f16aa103d3afd42fbca2ab346f191bf745cec092John McCall // Records are non-zero-initializable if they contain any 466f16aa103d3afd42fbca2ab346f191bf745cec092John McCall // non-zero-initializable subobjects. 4673e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson if (const RecordType *RT = T->getAs<RecordType>()) { 4683e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson const CXXRecordDecl *RD = cast<CXXRecordDecl>(RT->getDecl()); 469f16aa103d3afd42fbca2ab346f191bf745cec092John McCall return isZeroInitializable(RD); 4703e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson } 471f16aa103d3afd42fbca2ab346f191bf745cec092John McCall 472f16aa103d3afd42fbca2ab346f191bf745cec092John McCall // We have to ask the ABI about member pointers. 4733e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson if (const MemberPointerType *MPT = T->getAs<MemberPointerType>()) 474f16aa103d3afd42fbca2ab346f191bf745cec092John McCall return getCXXABI().isZeroInitializable(MPT); 4753e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson 476f16aa103d3afd42fbca2ab346f191bf745cec092John McCall // Everything else is okay. 477f16aa103d3afd42fbca2ab346f191bf745cec092John McCall return true; 4783e5af908ebf4c56b657c488bb2ca22f418e0868bAnders Carlsson} 479c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson 480f16aa103d3afd42fbca2ab346f191bf745cec092John McCallbool CodeGenTypes::isZeroInitializable(const CXXRecordDecl *RD) { 4813379e9bd71c0e0051bd97e90d4f2ec964078091dAnders Carlsson return getCGRecordLayout(RD).isZeroInitializable(); 482c39211d2aef5b8ca2bc69c9fb81ca3dfb3711eb0Anders Carlsson} 483