1 //===- subzero/src/IceTypeConverter.h - Convert ICE/LLVM Types --*- C++ -*-===// 2 // 3 // The Subzero Code Generator 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 /// 10 /// \file 11 /// \brief Defines how to convert LLVM types to ICE types, and ICE types to LLVM 12 /// types. 13 /// 14 //===----------------------------------------------------------------------===// 15 16 #ifndef SUBZERO_SRC_ICETYPECONVERTER_H 17 #define SUBZERO_SRC_ICETYPECONVERTER_H 18 19 #include "IceDefs.h" 20 #include "IceTypes.h" 21 22 #ifdef __clang__ 23 #pragma clang diagnostic push 24 #pragma clang diagnostic ignored "-Wunused-parameter" 25 #endif // __clang__ 26 27 #include "llvm/IR/DerivedTypes.h" 28 29 #ifdef __clang__ 30 #pragma clang diagnostic pop 31 #endif // __clang__ 32 33 namespace llvm { 34 class LLVMContext; 35 } // end of namespace llvm 36 37 namespace Ice { 38 39 /// Converts LLVM types to ICE types, and ICE types to LLVM types. 40 class TypeConverter { 41 TypeConverter() = delete; 42 TypeConverter(const TypeConverter &) = delete; 43 TypeConverter &operator=(const TypeConverter &) = delete; 44 45 public: 46 /// Context is the context to use to build llvm types. 47 explicit TypeConverter(llvm::LLVMContext &Context); 48 49 /// Converts LLVM type LLVMTy to an ICE type. Returns Ice::IceType_NUM if 50 /// unable to convert. convertToIceType(llvm::Type * LLVMTy)51 Type convertToIceType(llvm::Type *LLVMTy) const { 52 auto Pos = LLVM2IceMap.find(LLVMTy); 53 if (Pos == LLVM2IceMap.end()) 54 return convertToIceTypeOther(LLVMTy); 55 return Pos->second; 56 } 57 58 private: 59 /// The mapping from LLVM types to corresopnding Ice types. 60 std::map<llvm::Type *, Type> LLVM2IceMap; 61 62 /// Add LLVM/ICE pair to internal tables. 63 void addLLVMType(Type Ty, llvm::Type *LLVMTy); 64 65 /// Converts types not in LLVM2IceMap. 66 Type convertToIceTypeOther(llvm::Type *LLVMTy) const; 67 }; 68 69 } // end of namespace Ice 70 71 #endif // SUBZERO_SRC_ICETYPECONVERTER_H 72