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//===- SubtargetEmitter.h - Generate subtarget enumerations -----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This tablegen backend emits subtarget enumerations.
//
//===----------------------------------------------------------------------===//
#ifndef SUBTARGET_EMITTER_H
#define SUBTARGET_EMITTER_H
#include "llvm/TableGen/TableGenBackend.h"
#include "llvm/MC/MCInstrItineraries.h"
#include <vector>
#include <map>
#include <string>
namespace llvm {
class SubtargetEmitter : public TableGenBackend {
RecordKeeper &Records;
std::string Target;
bool HasItineraries;
void Enumeration(raw_ostream &OS, const char *ClassName, bool isBits);
unsigned FeatureKeyValues(raw_ostream &OS);
unsigned CPUKeyValues(raw_ostream &OS);
unsigned CollectAllItinClasses(raw_ostream &OS,
std::map<std::string,unsigned> &ItinClassesMap,
std::vector<Record*> &ItinClassList);
void FormItineraryStageString(const std::string &Names,
Record *ItinData, std::string &ItinString,
unsigned &NStages);
void FormItineraryOperandCycleString(Record *ItinData, std::string &ItinString,
unsigned &NOperandCycles);
void FormItineraryBypassString(const std::string &Names,
Record *ItinData,
std::string &ItinString, unsigned NOperandCycles);
void EmitStageAndOperandCycleData(raw_ostream &OS, unsigned NItinClasses,
std::map<std::string, unsigned> &ItinClassesMap,
std::vector<Record*> &ItinClassList,
std::vector<std::vector<InstrItinerary> > &ProcList);
void EmitProcessorData(raw_ostream &OS,
std::vector<Record*> &ItinClassList,
std::vector<std::vector<InstrItinerary> > &ProcList);
void EmitProcessorLookup(raw_ostream &OS);
void EmitData(raw_ostream &OS);
void ParseFeaturesFunction(raw_ostream &OS, unsigned NumFeatures,
unsigned NumProcs);
public:
SubtargetEmitter(RecordKeeper &R) : Records(R), HasItineraries(false) {}
// run - Output the subtarget enumerations, returning true on failure.
void run(raw_ostream &o);
};
} // End llvm namespace
#endif
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