1 //===-- NVPTXMachineFunctionInfo.h - NVPTX-specific Function Info --------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This class is attached to a MachineFunction instance and tracks target- 11 // dependent information 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_LIB_TARGET_NVPTX_NVPTXMACHINEFUNCTIONINFO_H 16 #define LLVM_LIB_TARGET_NVPTX_NVPTXMACHINEFUNCTIONINFO_H 17 18 #include "llvm/CodeGen/MachineFunction.h" 19 20 namespace llvm { 21 class NVPTXMachineFunctionInfo : public MachineFunctionInfo { 22 private: 23 /// Stores a mapping from index to symbol name for removing image handles 24 /// on Fermi. 25 SmallVector<std::string, 8> ImageHandleList; 26 27 public: 28 NVPTXMachineFunctionInfo(MachineFunction &MF) {} 29 30 /// Returns the index for the symbol \p Symbol. If the symbol was previously, 31 /// added, the same index is returned. Otherwise, the symbol is added and the 32 /// new index is returned. 33 unsigned getImageHandleSymbolIndex(const char *Symbol) { 34 // Is the symbol already present? 35 for (unsigned i = 0, e = ImageHandleList.size(); i != e; ++i) 36 if (ImageHandleList[i] == std::string(Symbol)) 37 return i; 38 // Nope, insert it 39 ImageHandleList.push_back(Symbol); 40 return ImageHandleList.size()-1; 41 } 42 43 /// Returns the symbol name at the given index. 44 const char *getImageHandleSymbol(unsigned Idx) const { 45 assert(ImageHandleList.size() > Idx && "Bad index"); 46 return ImageHandleList[Idx].c_str(); 47 } 48 }; 49 } 50 51 #endif 52
