1 //===- CodeEmitterGen.h - Code Emitter Generator ----------------*- 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 // FIXME: document 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef CODEMITTERGEN_H 15 #define CODEMITTERGEN_H 16 17 #include "llvm/TableGen/TableGenBackend.h" 18 #include <vector> 19 #include <string> 20 21 namespace llvm { 22 23 class RecordVal; 24 class BitsInit; 25 class CodeGenTarget; 26 27 class CodeEmitterGen : public TableGenBackend { 28 RecordKeeper &Records; 29 public: 30 CodeEmitterGen(RecordKeeper &R) : Records(R) {} 31 32 // run - Output the code emitter 33 void run(raw_ostream &o); 34 private: 35 void emitMachineOpEmitter(raw_ostream &o, const std::string &Namespace); 36 void emitGetValueBit(raw_ostream &o, const std::string &Namespace); 37 void reverseBits(std::vector<Record*> &Insts); 38 int getVariableBit(const std::string &VarName, BitsInit *BI, int bit); 39 std::string getInstructionCase(Record *R, CodeGenTarget &Target); 40 void 41 AddCodeToMergeInOperand(Record *R, BitsInit *BI, const std::string &VarName, 42 unsigned &NumberedOp, 43 std::string &Case, CodeGenTarget &Target); 44 45 }; 46 47 } // End llvm namespace 48 49 #endif 50
