annotate lib/Analysis/AliasAnalysisEvaluator.cpp @ 3:9ad51c7bc036

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author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Wed, 15 May 2013 06:43:32 +0900
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children 54457678186b
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1 //===- AliasAnalysisEvaluator.cpp - Alias Analysis Accuracy Evaluator -----===//
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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 file implements a simple N^2 alias analysis accuracy evaluator.
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11 // Basically, for each function in the program, it simply queries to see how the
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12 // alias analysis implementation answers alias queries between each pair of
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13 // pointers in the function.
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14 //
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15 // This is inspired and adapted from code by: Naveen Neelakantam, Francesco
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16 // Spadini, and Wojciech Stryjewski.
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17 //
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18 //===----------------------------------------------------------------------===//
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19
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20 #include "llvm/Analysis/Passes.h"
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21 #include "llvm/ADT/SetVector.h"
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22 #include "llvm/Analysis/AliasAnalysis.h"
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23 #include "llvm/Assembly/Writer.h"
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24 #include "llvm/IR/Constants.h"
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25 #include "llvm/IR/DerivedTypes.h"
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26 #include "llvm/IR/Function.h"
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27 #include "llvm/IR/Instructions.h"
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28 #include "llvm/Pass.h"
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29 #include "llvm/Support/CommandLine.h"
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30 #include "llvm/Support/Debug.h"
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31 #include "llvm/Support/InstIterator.h"
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32 #include "llvm/Support/raw_ostream.h"
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33 using namespace llvm;
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34
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35 static cl::opt<bool> PrintAll("print-all-alias-modref-info", cl::ReallyHidden);
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36
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37 static cl::opt<bool> PrintNoAlias("print-no-aliases", cl::ReallyHidden);
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38 static cl::opt<bool> PrintMayAlias("print-may-aliases", cl::ReallyHidden);
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39 static cl::opt<bool> PrintPartialAlias("print-partial-aliases", cl::ReallyHidden);
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40 static cl::opt<bool> PrintMustAlias("print-must-aliases", cl::ReallyHidden);
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41
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42 static cl::opt<bool> PrintNoModRef("print-no-modref", cl::ReallyHidden);
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43 static cl::opt<bool> PrintMod("print-mod", cl::ReallyHidden);
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44 static cl::opt<bool> PrintRef("print-ref", cl::ReallyHidden);
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45 static cl::opt<bool> PrintModRef("print-modref", cl::ReallyHidden);
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46
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47 static cl::opt<bool> EvalTBAA("evaluate-tbaa", cl::ReallyHidden);
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48
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49 namespace {
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50 class AAEval : public FunctionPass {
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51 unsigned NoAlias, MayAlias, PartialAlias, MustAlias;
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52 unsigned NoModRef, Mod, Ref, ModRef;
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53
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54 public:
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55 static char ID; // Pass identification, replacement for typeid
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56 AAEval() : FunctionPass(ID) {
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57 initializeAAEvalPass(*PassRegistry::getPassRegistry());
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58 }
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59
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60 virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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61 AU.addRequired<AliasAnalysis>();
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62 AU.setPreservesAll();
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63 }
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64
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65 bool doInitialization(Module &M) {
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66 NoAlias = MayAlias = PartialAlias = MustAlias = 0;
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67 NoModRef = Mod = Ref = ModRef = 0;
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68
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69 if (PrintAll) {
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70 PrintNoAlias = PrintMayAlias = true;
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71 PrintPartialAlias = PrintMustAlias = true;
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72 PrintNoModRef = PrintMod = PrintRef = PrintModRef = true;
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73 }
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74 return false;
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75 }
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76
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77 bool runOnFunction(Function &F);
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78 bool doFinalization(Module &M);
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79 };
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80 }
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81
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82 char AAEval::ID = 0;
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83 INITIALIZE_PASS_BEGIN(AAEval, "aa-eval",
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84 "Exhaustive Alias Analysis Precision Evaluator", false, true)
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85 INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
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86 INITIALIZE_PASS_END(AAEval, "aa-eval",
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87 "Exhaustive Alias Analysis Precision Evaluator", false, true)
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88
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89 FunctionPass *llvm::createAAEvalPass() { return new AAEval(); }
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90
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91 static void PrintResults(const char *Msg, bool P, const Value *V1,
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92 const Value *V2, const Module *M) {
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93 if (P) {
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94 std::string o1, o2;
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95 {
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96 raw_string_ostream os1(o1), os2(o2);
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97 WriteAsOperand(os1, V1, true, M);
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98 WriteAsOperand(os2, V2, true, M);
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99 }
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100
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101 if (o2 < o1)
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102 std::swap(o1, o2);
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103 errs() << " " << Msg << ":\t"
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104 << o1 << ", "
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105 << o2 << "\n";
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106 }
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107 }
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108
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109 static inline void
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110 PrintModRefResults(const char *Msg, bool P, Instruction *I, Value *Ptr,
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111 Module *M) {
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112 if (P) {
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113 errs() << " " << Msg << ": Ptr: ";
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114 WriteAsOperand(errs(), Ptr, true, M);
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115 errs() << "\t<->" << *I << '\n';
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116 }
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117 }
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118
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119 static inline void
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120 PrintModRefResults(const char *Msg, bool P, CallSite CSA, CallSite CSB,
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121 Module *M) {
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122 if (P) {
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123 errs() << " " << Msg << ": " << *CSA.getInstruction()
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124 << " <-> " << *CSB.getInstruction() << '\n';
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125 }
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126 }
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127
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diff changeset
128 static inline void
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129 PrintLoadStoreResults(const char *Msg, bool P, const Value *V1,
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130 const Value *V2, const Module *M) {
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131 if (P) {
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132 errs() << " " << Msg << ": " << *V1
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133 << " <-> " << *V2 << '\n';
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134 }
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135 }
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136
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137 static inline bool isInterestingPointer(Value *V) {
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138 return V->getType()->isPointerTy()
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139 && !isa<ConstantPointerNull>(V);
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140 }
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141
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142 bool AAEval::runOnFunction(Function &F) {
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143 AliasAnalysis &AA = getAnalysis<AliasAnalysis>();
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144
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145 SetVector<Value *> Pointers;
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146 SetVector<CallSite> CallSites;
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147 SetVector<Value *> Loads;
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148 SetVector<Value *> Stores;
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149
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150 for (Function::arg_iterator I = F.arg_begin(), E = F.arg_end(); I != E; ++I)
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151 if (I->getType()->isPointerTy()) // Add all pointer arguments.
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152 Pointers.insert(I);
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153
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154 for (inst_iterator I = inst_begin(F), E = inst_end(F); I != E; ++I) {
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155 if (I->getType()->isPointerTy()) // Add all pointer instructions.
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156 Pointers.insert(&*I);
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157 if (EvalTBAA && isa<LoadInst>(&*I))
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158 Loads.insert(&*I);
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159 if (EvalTBAA && isa<StoreInst>(&*I))
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160 Stores.insert(&*I);
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161 Instruction &Inst = *I;
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162 if (CallSite CS = cast<Value>(&Inst)) {
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163 Value *Callee = CS.getCalledValue();
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164 // Skip actual functions for direct function calls.
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165 if (!isa<Function>(Callee) && isInterestingPointer(Callee))
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166 Pointers.insert(Callee);
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167 // Consider formals.
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168 for (CallSite::arg_iterator AI = CS.arg_begin(), AE = CS.arg_end();
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169 AI != AE; ++AI)
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170 if (isInterestingPointer(*AI))
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171 Pointers.insert(*AI);
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172 CallSites.insert(CS);
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173 } else {
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174 // Consider all operands.
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175 for (Instruction::op_iterator OI = Inst.op_begin(), OE = Inst.op_end();
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176 OI != OE; ++OI)
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177 if (isInterestingPointer(*OI))
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178 Pointers.insert(*OI);
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179 }
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180 }
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181
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182 if (PrintNoAlias || PrintMayAlias || PrintPartialAlias || PrintMustAlias ||
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183 PrintNoModRef || PrintMod || PrintRef || PrintModRef)
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184 errs() << "Function: " << F.getName() << ": " << Pointers.size()
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185 << " pointers, " << CallSites.size() << " call sites\n";
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186
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187 // iterate over the worklist, and run the full (n^2)/2 disambiguations
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188 for (SetVector<Value *>::iterator I1 = Pointers.begin(), E = Pointers.end();
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189 I1 != E; ++I1) {
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190 uint64_t I1Size = AliasAnalysis::UnknownSize;
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191 Type *I1ElTy = cast<PointerType>((*I1)->getType())->getElementType();
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192 if (I1ElTy->isSized()) I1Size = AA.getTypeStoreSize(I1ElTy);
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193
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194 for (SetVector<Value *>::iterator I2 = Pointers.begin(); I2 != I1; ++I2) {
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195 uint64_t I2Size = AliasAnalysis::UnknownSize;
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196 Type *I2ElTy =cast<PointerType>((*I2)->getType())->getElementType();
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197 if (I2ElTy->isSized()) I2Size = AA.getTypeStoreSize(I2ElTy);
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198
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199 switch (AA.alias(*I1, I1Size, *I2, I2Size)) {
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200 case AliasAnalysis::NoAlias:
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201 PrintResults("NoAlias", PrintNoAlias, *I1, *I2, F.getParent());
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202 ++NoAlias; break;
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203 case AliasAnalysis::MayAlias:
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204 PrintResults("MayAlias", PrintMayAlias, *I1, *I2, F.getParent());
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205 ++MayAlias; break;
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206 case AliasAnalysis::PartialAlias:
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207 PrintResults("PartialAlias", PrintPartialAlias, *I1, *I2,
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208 F.getParent());
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209 ++PartialAlias; break;
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210 case AliasAnalysis::MustAlias:
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211 PrintResults("MustAlias", PrintMustAlias, *I1, *I2, F.getParent());
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212 ++MustAlias; break;
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213 }
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214 }
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215 }
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216
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217 if (EvalTBAA) {
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218 // iterate over all pairs of load, store
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219 for (SetVector<Value *>::iterator I1 = Loads.begin(), E = Loads.end();
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220 I1 != E; ++I1) {
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221 for (SetVector<Value *>::iterator I2 = Stores.begin(), E2 = Stores.end();
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222 I2 != E2; ++I2) {
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223 switch (AA.alias(AA.getLocation(cast<LoadInst>(*I1)),
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224 AA.getLocation(cast<StoreInst>(*I2)))) {
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225 case AliasAnalysis::NoAlias:
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226 PrintLoadStoreResults("NoAlias", PrintNoAlias, *I1, *I2,
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227 F.getParent());
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228 ++NoAlias; break;
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229 case AliasAnalysis::MayAlias:
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230 PrintLoadStoreResults("MayAlias", PrintMayAlias, *I1, *I2,
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231 F.getParent());
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232 ++MayAlias; break;
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233 case AliasAnalysis::PartialAlias:
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234 PrintLoadStoreResults("PartialAlias", PrintPartialAlias, *I1, *I2,
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diff changeset
235 F.getParent());
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parents:
diff changeset
236 ++PartialAlias; break;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
237 case AliasAnalysis::MustAlias:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
238 PrintLoadStoreResults("MustAlias", PrintMustAlias, *I1, *I2,
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
239 F.getParent());
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
240 ++MustAlias; break;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
241 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
242 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
243 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
244
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
245 // iterate over all pairs of store, store
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
246 for (SetVector<Value *>::iterator I1 = Stores.begin(), E = Stores.end();
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parents:
diff changeset
247 I1 != E; ++I1) {
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parents:
diff changeset
248 for (SetVector<Value *>::iterator I2 = Stores.begin(); I2 != I1; ++I2) {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
249 switch (AA.alias(AA.getLocation(cast<StoreInst>(*I1)),
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
250 AA.getLocation(cast<StoreInst>(*I2)))) {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
251 case AliasAnalysis::NoAlias:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
252 PrintLoadStoreResults("NoAlias", PrintNoAlias, *I1, *I2,
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
253 F.getParent());
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
254 ++NoAlias; break;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
255 case AliasAnalysis::MayAlias:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
256 PrintLoadStoreResults("MayAlias", PrintMayAlias, *I1, *I2,
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
257 F.getParent());
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
258 ++MayAlias; break;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
259 case AliasAnalysis::PartialAlias:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
260 PrintLoadStoreResults("PartialAlias", PrintPartialAlias, *I1, *I2,
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
261 F.getParent());
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
262 ++PartialAlias; break;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
263 case AliasAnalysis::MustAlias:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
264 PrintLoadStoreResults("MustAlias", PrintMustAlias, *I1, *I2,
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
265 F.getParent());
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
266 ++MustAlias; break;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
267 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
268 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
269 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
270 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
271
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
272 // Mod/ref alias analysis: compare all pairs of calls and values
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
273 for (SetVector<CallSite>::iterator C = CallSites.begin(),
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
274 Ce = CallSites.end(); C != Ce; ++C) {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
275 Instruction *I = C->getInstruction();
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
276
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
277 for (SetVector<Value *>::iterator V = Pointers.begin(), Ve = Pointers.end();
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
278 V != Ve; ++V) {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
279 uint64_t Size = AliasAnalysis::UnknownSize;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
280 Type *ElTy = cast<PointerType>((*V)->getType())->getElementType();
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
281 if (ElTy->isSized()) Size = AA.getTypeStoreSize(ElTy);
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
282
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
283 switch (AA.getModRefInfo(*C, *V, Size)) {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
284 case AliasAnalysis::NoModRef:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
285 PrintModRefResults("NoModRef", PrintNoModRef, I, *V, F.getParent());
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
286 ++NoModRef; break;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
287 case AliasAnalysis::Mod:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
288 PrintModRefResults("Just Mod", PrintMod, I, *V, F.getParent());
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
289 ++Mod; break;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
290 case AliasAnalysis::Ref:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
291 PrintModRefResults("Just Ref", PrintRef, I, *V, F.getParent());
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
292 ++Ref; break;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
293 case AliasAnalysis::ModRef:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
294 PrintModRefResults("Both ModRef", PrintModRef, I, *V, F.getParent());
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
295 ++ModRef; break;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
296 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
297 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
298 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
299
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parents:
diff changeset
300 // Mod/ref alias analysis: compare all pairs of calls
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
301 for (SetVector<CallSite>::iterator C = CallSites.begin(),
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
302 Ce = CallSites.end(); C != Ce; ++C) {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
303 for (SetVector<CallSite>::iterator D = CallSites.begin(); D != Ce; ++D) {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
304 if (D == C)
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
305 continue;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
306 switch (AA.getModRefInfo(*C, *D)) {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
307 case AliasAnalysis::NoModRef:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
308 PrintModRefResults("NoModRef", PrintNoModRef, *C, *D, F.getParent());
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
309 ++NoModRef; break;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
310 case AliasAnalysis::Mod:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
311 PrintModRefResults("Just Mod", PrintMod, *C, *D, F.getParent());
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
312 ++Mod; break;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
313 case AliasAnalysis::Ref:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
314 PrintModRefResults("Just Ref", PrintRef, *C, *D, F.getParent());
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
315 ++Ref; break;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
316 case AliasAnalysis::ModRef:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
317 PrintModRefResults("Both ModRef", PrintModRef, *C, *D, F.getParent());
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
318 ++ModRef; break;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
319 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
320 }
9ad51c7bc036 1st commit. remove git dir and add all files.
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
321 }
9ad51c7bc036 1st commit. remove git dir and add all files.
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
322
9ad51c7bc036 1st commit. remove git dir and add all files.
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
323 return false;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
324 }
9ad51c7bc036 1st commit. remove git dir and add all files.
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
325
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
326 static void PrintPercent(unsigned Num, unsigned Sum) {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
327 errs() << "(" << Num*100ULL/Sum << "."
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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328 << ((Num*1000ULL/Sum) % 10) << "%)\n";
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
329 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
330
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
331 bool AAEval::doFinalization(Module &M) {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
332 unsigned AliasSum = NoAlias + MayAlias + PartialAlias + MustAlias;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
333 errs() << "===== Alias Analysis Evaluator Report =====\n";
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
334 if (AliasSum == 0) {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
335 errs() << " Alias Analysis Evaluator Summary: No pointers!\n";
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
336 } else {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
337 errs() << " " << AliasSum << " Total Alias Queries Performed\n";
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
338 errs() << " " << NoAlias << " no alias responses ";
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
339 PrintPercent(NoAlias, AliasSum);
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
340 errs() << " " << MayAlias << " may alias responses ";
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
341 PrintPercent(MayAlias, AliasSum);
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
342 errs() << " " << PartialAlias << " partial alias responses ";
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
343 PrintPercent(PartialAlias, AliasSum);
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
344 errs() << " " << MustAlias << " must alias responses ";
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
345 PrintPercent(MustAlias, AliasSum);
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
346 errs() << " Alias Analysis Evaluator Pointer Alias Summary: "
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
347 << NoAlias*100/AliasSum << "%/" << MayAlias*100/AliasSum << "%/"
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
348 << PartialAlias*100/AliasSum << "%/"
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
349 << MustAlias*100/AliasSum << "%\n";
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
350 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
351
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
352 // Display the summary for mod/ref analysis
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
353 unsigned ModRefSum = NoModRef + Mod + Ref + ModRef;
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354 if (ModRefSum == 0) {
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355 errs() << " Alias Analysis Mod/Ref Evaluator Summary: no mod/ref!\n";
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356 } else {
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357 errs() << " " << ModRefSum << " Total ModRef Queries Performed\n";
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358 errs() << " " << NoModRef << " no mod/ref responses ";
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359 PrintPercent(NoModRef, ModRefSum);
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360 errs() << " " << Mod << " mod responses ";
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361 PrintPercent(Mod, ModRefSum);
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362 errs() << " " << Ref << " ref responses ";
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363 PrintPercent(Ref, ModRefSum);
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364 errs() << " " << ModRef << " mod & ref responses ";
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365 PrintPercent(ModRef, ModRefSum);
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366 errs() << " Alias Analysis Evaluator Mod/Ref Summary: "
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367 << NoModRef*100/ModRefSum << "%/" << Mod*100/ModRefSum << "%/"
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368 << Ref*100/ModRefSum << "%/" << ModRef*100/ModRefSum << "%\n";
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369 }
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370
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371 return false;
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372 }