1//===- AsmWriterEmitter.h - Generate an assembly writer ---------*- 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 is responsible for emitting an assembly printer for the
11// code generator.
12//
13//===----------------------------------------------------------------------===//
14
15#ifndef ASMWRITER_EMITTER_H
16#define ASMWRITER_EMITTER_H
17
18#include "llvm/TableGen/TableGenBackend.h"
19#include <map>
20#include <vector>
21#include <cassert>
22
23namespace llvm {
24  class AsmWriterInst;
25  class CodeGenInstruction;
26
27  class AsmWriterEmitter : public TableGenBackend {
28    RecordKeeper &Records;
29    std::map<const CodeGenInstruction*, AsmWriterInst*> CGIAWIMap;
30    std::vector<const CodeGenInstruction*> NumberedInstructions;
31  public:
32    AsmWriterEmitter(RecordKeeper &R) : Records(R) {}
33
34    // run - Output the asmwriter, returning true on failure.
35    void run(raw_ostream &o);
36
37private:
38    void EmitPrintInstruction(raw_ostream &o);
39    void EmitGetRegisterName(raw_ostream &o);
40    void EmitGetInstructionName(raw_ostream &o);
41    void EmitRegIsInRegClass(raw_ostream &O);
42    void EmitPrintAliasInstruction(raw_ostream &O);
43
44    AsmWriterInst *getAsmWriterInstByID(unsigned ID) const {
45      assert(ID < NumberedInstructions.size());
46      std::map<const CodeGenInstruction*, AsmWriterInst*>::const_iterator I =
47        CGIAWIMap.find(NumberedInstructions[ID]);
48      assert(I != CGIAWIMap.end() && "Didn't find inst!");
49      return I->second;
50    }
51    void FindUniqueOperandCommands(std::vector<std::string> &UOC,
52                                   std::vector<unsigned> &InstIdxs,
53                                   std::vector<unsigned> &InstOpsUsed) const;
54  };
55}
56#endif
57