lib/CodeGen/CGRecordLayoutBuilder.cpp

26 #include "llvm/IR/Type.h"
35 /// llvm::Type.  Some of the lowering is straightforward, some is not.  Here we
38 ///   llvm::Type with correct size.  We choose a field via a specific heuristic
81     llvm::Type *Data;
86     MemberInfo(CharUnits Offset, InfoKind Kind, llvm::Type *Data,
89     MemberInfo(CharUnits Offset, InfoKind Kind, llvm::Type *Data,
98   /// \brief Constructs a MemberInfo instance from an offset and llvm::Type *.
99   MemberInfo StorageInfo(CharUnits Offset, llvm::Type *Data) {
121   /// \brief Wraps llvm::Type::getIntNTy with some implicit arguments.
122   llvm::Type *getIntNType(uint64_t NumBits) {
123     return llvm::Type::getIntNTy(Types.getLLVMContext(),
127   llvm::Type *getByteArrayType(CharUnits NumBytes) {
129     llvm::Type *Type = llvm::Type::getInt8Ty(Types.getLLVMContext());
130     return NumBytes == CharUnits::One() ? Type :
131         (llvm::Type *)llvm::ArrayType::get(Type, NumBytes.getQuantity());
135   llvm::Type *getStorageType(const FieldDecl *FD) {
136     llvm::Type *Type = Types.ConvertTypeForMem(FD->getType());
137     if (!FD->isBitField()) return Type;
138     if (isDiscreteBitFieldABI()) return Type;
140                              (unsigned)Context.toBits(getSize(Type))));
143   llvm::Type *getStorageType(const CXXRecordDecl *RD) {
149   CharUnits getSize(llvm::Type *Type) {
150     return CharUnits::fromQuantity(DataLayout.getTypeAllocSize(Type));
152   CharUnits getAlignment(llvm::Type *Type) {
153     return CharUnits::fromQuantity(DataLayout.getABITypeAlignment(Type));
170                        llvm::Type *StorageType);
203   SmallVector<llvm::Type *, 16> FieldTypes;
225     const FieldDecl *FD, CharUnits StartOffset, llvm::Type *StorageType) {
288   llvm::Type *StorageType = nullptr;
300       llvm::Type *FieldType = getStorageType(Field);
306     llvm::Type *FieldType = getStorageType(Field);
387       llvm::Type *Type = Types.ConvertTypeForMem(Field->getType());
393         Tail = StartBitOffset + DataLayout.getTypeAllocSizeInBits(Type);
397         Members.push_back(StorageInfo(bitsToCharUnits(StartBitOffset), Type));
429     llvm::Type *Type = getIntNType(Tail - StartBitOffset);
433     Members.push_back(StorageInfo(bitsToCharUnits(StartBitOffset), Type));
470         llvm::Type::getInt32PtrTy(Types.getLLVMContext())));
654   llvm::Type *Ty = Types.ConvertTypeForMem(FD->getType());
741          "Type size mismatch!");
751            "Type size mismatch!");
782     llvm::Type *ElementTy = ST->getTypeAtIndex(RL->getLLVMFieldNo(FD));