1 //===- SubtargetEmitter.h - Generate subtarget enumerations -----*- C++ -*-===// 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 tablegen backend emits subtarget enumerations. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef SUBTARGET_EMITTER_H 15 #define SUBTARGET_EMITTER_H 16 17 #include "TableGenBackend.h" 18 #include "llvm/Target/TargetInstrItineraries.h" 19 #include <vector> 20 #include <map> 21 #include <string> 22 23 24 namespace llvm { 25 26 class SubtargetEmitter : public TableGenBackend { 27 28 RecordKeeper &Records; 29 std::string Target; 30 bool HasItineraries; 31 32 void Enumeration(raw_ostream &OS, const char *ClassName, bool isBits); 33 void FeatureKeyValues(raw_ostream &OS); 34 void CPUKeyValues(raw_ostream &OS); 35 unsigned CollectAllItinClasses(raw_ostream &OS, 36 std::map<std::string, unsigned> &ItinClassesMap); 37 void FormItineraryStageString(const std::string &Names, 38 Record *ItinData, std::string &ItinString, 39 unsigned &NStages); 40 void FormItineraryOperandCycleString(Record *ItinData, std::string &ItinString, 41 unsigned &NOperandCycles); 42 void EmitStageAndOperandCycleData(raw_ostream &OS, unsigned NItinClasses, 43 std::map<std::string, unsigned> &ItinClassesMap, 44 std::vector<std::vector<InstrItinerary> > &ProcList); 45 void EmitProcessorData(raw_ostream &OS, 46 std::vector<std::vector<InstrItinerary> > &ProcList); 47 void EmitProcessorLookup(raw_ostream &OS); 48 void EmitData(raw_ostream &OS); 49 void ParseFeaturesFunction(raw_ostream &OS); 50 51 public: SubtargetEmitter(RecordKeeper & R)52 SubtargetEmitter(RecordKeeper &R) : Records(R), HasItineraries(false) {} 53 54 // run - Output the subtarget enumerations, returning true on failure. 55 void run(raw_ostream &o); 56 57 }; 58 59 60 } // End llvm namespace 61 62 #endif 63 64 65 66