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annotate tools/llvm-diff/DiffConsumer.cpp @ 122:36195a0db682

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Fri, 17 Nov 2017 20:32:31 +0900
parents 803732b1fca8
children 3a76565eade5
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1 //===-- DiffConsumer.cpp - Difference Consumer ------------------*- 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 // This files implements the LLVM difference Consumer
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11 //
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12 //===----------------------------------------------------------------------===//
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13
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14 #include "DiffConsumer.h"
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15 #include "llvm/IR/Instructions.h"
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16 #include "llvm/IR/Module.h"
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17 #include "llvm/Support/ErrorHandling.h"
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18 #include "llvm/Support/Debug.h"
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19
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20 using namespace llvm;
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21
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22 static void ComputeNumbering(Function *F, DenseMap<Value*,unsigned> &Numbering){
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23 unsigned IN = 0;
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24
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25 // Arguments get the first numbers.
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26 for (Function::arg_iterator
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27 AI = F->arg_begin(), AE = F->arg_end(); AI != AE; ++AI)
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28 if (!AI->hasName())
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29 Numbering[&*AI] = IN++;
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30
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31 // Walk the basic blocks in order.
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32 for (Function::iterator FI = F->begin(), FE = F->end(); FI != FE; ++FI) {
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33 if (!FI->hasName())
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34 Numbering[&*FI] = IN++;
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35
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36 // Walk the instructions in order.
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37 for (BasicBlock::iterator BI = FI->begin(), BE = FI->end(); BI != BE; ++BI)
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38 // void instructions don't get numbers.
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39 if (!BI->hasName() && !BI->getType()->isVoidTy())
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40 Numbering[&*BI] = IN++;
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41 }
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42
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43 assert(!Numbering.empty() && "asked for numbering but numbering was no-op");
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44 }
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45
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46
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47 void Consumer::anchor() { }
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48
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49 void DiffConsumer::printValue(Value *V, bool isL) {
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50 if (V->hasName()) {
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51 out << (isa<GlobalValue>(V) ? '@' : '%') << V->getName();
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52 return;
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53 }
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54 if (V->getType()->isVoidTy()) {
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55 if (isa<StoreInst>(V)) {
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56 out << "store to ";
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57 printValue(cast<StoreInst>(V)->getPointerOperand(), isL);
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58 } else if (isa<CallInst>(V)) {
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59 out << "call to ";
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60 printValue(cast<CallInst>(V)->getCalledValue(), isL);
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61 } else if (isa<InvokeInst>(V)) {
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62 out << "invoke to ";
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63 printValue(cast<InvokeInst>(V)->getCalledValue(), isL);
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64 } else {
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65 out << *V;
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66 }
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67 return;
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68 }
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69 if (isa<Constant>(V)) {
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70 out << *V;
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71 return;
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72 }
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73
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74 unsigned N = contexts.size();
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75 while (N > 0) {
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76 --N;
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77 DiffContext &ctxt = contexts[N];
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78 if (!ctxt.IsFunction) continue;
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79 if (isL) {
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80 if (ctxt.LNumbering.empty())
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81 ComputeNumbering(cast<Function>(ctxt.L), ctxt.LNumbering);
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82 out << '%' << ctxt.LNumbering[V];
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83 return;
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84 } else {
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85 if (ctxt.RNumbering.empty())
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86 ComputeNumbering(cast<Function>(ctxt.R), ctxt.RNumbering);
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87 out << '%' << ctxt.RNumbering[V];
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88 return;
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89 }
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90 }
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91
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92 out << "<anonymous>";
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93 }
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94
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95 void DiffConsumer::header() {
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96 if (contexts.empty()) return;
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97 for (SmallVectorImpl<DiffContext>::iterator
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98 I = contexts.begin(), E = contexts.end(); I != E; ++I) {
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99 if (I->Differences) continue;
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100 if (isa<Function>(I->L)) {
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101 // Extra newline between functions.
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102 if (Differences) out << "\n";
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103
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104 Function *L = cast<Function>(I->L);
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105 Function *R = cast<Function>(I->R);
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106 if (L->getName() != R->getName())
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107 out << "in function " << L->getName()
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108 << " / " << R->getName() << ":\n";
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109 else
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110 out << "in function " << L->getName() << ":\n";
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111 } else if (isa<BasicBlock>(I->L)) {
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112 BasicBlock *L = cast<BasicBlock>(I->L);
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113 BasicBlock *R = cast<BasicBlock>(I->R);
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114 if (L->hasName() && R->hasName() && L->getName() == R->getName())
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115 out << " in block %" << L->getName() << ":\n";
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116 else {
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117 out << " in block ";
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118 printValue(L, true);
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119 out << " / ";
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120 printValue(R, false);
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121 out << ":\n";
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122 }
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123 } else if (isa<Instruction>(I->L)) {
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124 out << " in instruction ";
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125 printValue(I->L, true);
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126 out << " / ";
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127 printValue(I->R, false);
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128 out << ":\n";
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129 }
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130
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131 I->Differences = true;
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132 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
133 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
134
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
135 void DiffConsumer::indent() {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
136 unsigned N = Indent;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
137 while (N--) out << ' ';
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
138 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
139
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
140 bool DiffConsumer::hadDifferences() const {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
141 return Differences;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
142 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
143
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
144 void DiffConsumer::enterContext(Value *L, Value *R) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
145 contexts.push_back(DiffContext(L, R));
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
146 Indent += 2;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
147 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
148
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
149 void DiffConsumer::exitContext() {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
150 Differences |= contexts.back().Differences;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
151 contexts.pop_back();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
152 Indent -= 2;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
153 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
154
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
155 void DiffConsumer::log(StringRef text) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
156 header();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
157 indent();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
158 out << text << '\n';
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
159 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
160
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
161 void DiffConsumer::logf(const LogBuilder &Log) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
162 header();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
163 indent();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
164
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
165 unsigned arg = 0;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
166
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
167 StringRef format = Log.getFormat();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
168 while (true) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
169 size_t percent = format.find('%');
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
170 if (percent == StringRef::npos) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
171 out << format;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
172 break;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
173 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
174 assert(format[percent] == '%');
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
175
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
176 if (percent > 0) out << format.substr(0, percent);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
177
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
178 switch (format[percent+1]) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
179 case '%': out << '%'; break;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
180 case 'l': printValue(Log.getArgument(arg++), true); break;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
181 case 'r': printValue(Log.getArgument(arg++), false); break;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
182 default: llvm_unreachable("unknown format character");
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
183 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
184
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
185 format = format.substr(percent+2);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
186 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
187
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
188 out << '\n';
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
189 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
190
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
191 void DiffConsumer::logd(const DiffLogBuilder &Log) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
192 header();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
193
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
194 for (unsigned I = 0, E = Log.getNumLines(); I != E; ++I) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
195 indent();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
196 switch (Log.getLineKind(I)) {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
197 case DC_match:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
198 out << " ";
121
803732b1fca8 LLVM 5.0
kono
parents: 0
diff changeset
199 Log.getLeft(I)->print(dbgs()); dbgs() << '\n';
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
200 //printValue(Log.getLeft(I), true);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
201 break;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
202 case DC_left:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
203 out << "< ";
121
803732b1fca8 LLVM 5.0
kono
parents: 0
diff changeset
204 Log.getLeft(I)->print(dbgs()); dbgs() << '\n';
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
205 //printValue(Log.getLeft(I), true);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
206 break;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
207 case DC_right:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
208 out << "> ";
121
803732b1fca8 LLVM 5.0
kono
parents: 0
diff changeset
209 Log.getRight(I)->print(dbgs()); dbgs() << '\n';
0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
210 //printValue(Log.getRight(I), false);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
211 break;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
212 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
213 //out << "\n";
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
214 }
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
215 }