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annotate utils/TableGen/AsmWriterInst.h @ 75:90677c4a880a

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emit warning when function prototype is not exactly.
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Sun, 04 May 2014 02:24:57 +0900
parents e4204d083e25
children 54457678186b
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1 //===- AsmWriterInst.h - Classes encapsulating a printable inst -*- C++ -*-===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // These classes implement a parser for assembly strings. The parser splits
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11 // the string into operands, which can be literal strings (the constant bits of
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12 // the string), actual operands (i.e., operands from the MachineInstr), and
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13 // dynamically-generated text, specified by raw C++ code.
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14 //
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15 //===----------------------------------------------------------------------===//
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16
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17 #ifndef ASMWRITER_INST_H
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18 #define ASMWRITER_INST_H
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19
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20 #include <string>
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21 #include <vector>
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22
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23 namespace llvm {
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24 class CodeGenInstruction;
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25 class Record;
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26
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27 struct AsmWriterOperand {
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28 enum OpType {
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29 // Output this text surrounded by quotes to the asm.
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30 isLiteralTextOperand,
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31 // This is the name of a routine to call to print the operand.
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32 isMachineInstrOperand,
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33 // Output this text verbatim to the asm writer. It is code that
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34 // will output some text to the asm.
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35 isLiteralStatementOperand
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36 } OperandType;
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37
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38 /// Str - For isLiteralTextOperand, this IS the literal text. For
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39 /// isMachineInstrOperand, this is the PrinterMethodName for the operand..
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40 /// For isLiteralStatementOperand, this is the code to insert verbatim
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41 /// into the asm writer.
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42 std::string Str;
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43
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44 /// CGIOpNo - For isMachineInstrOperand, this is the index of the operand in
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45 /// the CodeGenInstruction.
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46 unsigned CGIOpNo;
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47
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48 /// MiOpNo - For isMachineInstrOperand, this is the operand number of the
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49 /// machine instruction.
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50 unsigned MIOpNo;
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51
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52 /// MiModifier - For isMachineInstrOperand, this is the modifier string for
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53 /// an operand, specified with syntax like ${opname:modifier}.
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54 std::string MiModifier;
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55
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56 // To make VS STL happy
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57 AsmWriterOperand(OpType op = isLiteralTextOperand):OperandType(op) {}
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58
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59 AsmWriterOperand(const std::string &LitStr,
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60 OpType op = isLiteralTextOperand)
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61 : OperandType(op), Str(LitStr) {}
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62
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63 AsmWriterOperand(const std::string &Printer,
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64 unsigned _CGIOpNo,
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65 unsigned _MIOpNo,
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66 const std::string &Modifier,
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67 OpType op = isMachineInstrOperand)
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68 : OperandType(op), Str(Printer), CGIOpNo(_CGIOpNo), MIOpNo(_MIOpNo),
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69 MiModifier(Modifier) {}
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70
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71 bool operator!=(const AsmWriterOperand &Other) const {
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72 if (OperandType != Other.OperandType || Str != Other.Str) return true;
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73 if (OperandType == isMachineInstrOperand)
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74 return MIOpNo != Other.MIOpNo || MiModifier != Other.MiModifier;
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75 return false;
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76 }
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77 bool operator==(const AsmWriterOperand &Other) const {
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78 return !operator!=(Other);
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79 }
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80
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81 /// getCode - Return the code that prints this operand.
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82 std::string getCode() const;
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83 };
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84
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85 class AsmWriterInst {
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86 public:
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87 std::vector<AsmWriterOperand> Operands;
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88 const CodeGenInstruction *CGI;
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89
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90 AsmWriterInst(const CodeGenInstruction &CGI,
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91 unsigned Variant,
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92 int OperandSpacing);
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93
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94 /// MatchesAllButOneOp - If this instruction is exactly identical to the
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95 /// specified instruction except for one differing operand, return the
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96 /// differing operand number. Otherwise return ~0.
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97 unsigned MatchesAllButOneOp(const AsmWriterInst &Other) const;
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98
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99 private:
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100 void AddLiteralString(const std::string &Str) {
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101 // If the last operand was already a literal text string, append this to
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102 // it, otherwise add a new operand.
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103 if (!Operands.empty() &&
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104 Operands.back().OperandType == AsmWriterOperand::isLiteralTextOperand)
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105 Operands.back().Str.append(Str);
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106 else
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107 Operands.push_back(AsmWriterOperand(Str));
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108 }
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109 };
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110 }
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111
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112 #endif