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1 //===- Module.cpp - Implement the Module class ----------------------------===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8 //
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9 // This file implements the Module class for the IR library.
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10 //
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11 //===----------------------------------------------------------------------===//
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12
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13 #include "llvm/IR/Module.h"
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14 #include "SymbolTableListTraitsImpl.h"
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15 #include "llvm/ADT/Optional.h"
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16 #include "llvm/ADT/SmallString.h"
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17 #include "llvm/ADT/SmallVector.h"
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18 #include "llvm/ADT/StringMap.h"
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19 #include "llvm/ADT/StringRef.h"
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20 #include "llvm/ADT/Twine.h"
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21 #include "llvm/IR/Attributes.h"
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22 #include "llvm/IR/Comdat.h"
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23 #include "llvm/IR/Constants.h"
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24 #include "llvm/IR/DataLayout.h"
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25 #include "llvm/IR/DebugInfoMetadata.h"
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26 #include "llvm/IR/DerivedTypes.h"
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27 #include "llvm/IR/Function.h"
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28 #include "llvm/IR/GVMaterializer.h"
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29 #include "llvm/IR/GlobalAlias.h"
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30 #include "llvm/IR/GlobalIFunc.h"
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31 #include "llvm/IR/GlobalValue.h"
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32 #include "llvm/IR/GlobalVariable.h"
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33 #include "llvm/IR/LLVMContext.h"
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34 #include "llvm/IR/Metadata.h"
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221
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35 #include "llvm/IR/ModuleSummaryIndex.h"
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150
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36 #include "llvm/IR/SymbolTableListTraits.h"
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37 #include "llvm/IR/Type.h"
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38 #include "llvm/IR/TypeFinder.h"
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39 #include "llvm/IR/Value.h"
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40 #include "llvm/IR/ValueSymbolTable.h"
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41 #include "llvm/Support/Casting.h"
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42 #include "llvm/Support/CodeGen.h"
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43 #include "llvm/Support/Error.h"
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44 #include "llvm/Support/MemoryBuffer.h"
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45 #include "llvm/Support/Path.h"
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46 #include "llvm/Support/RandomNumberGenerator.h"
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47 #include "llvm/Support/VersionTuple.h"
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48 #include <algorithm>
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49 #include <cassert>
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50 #include <cstdint>
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51 #include <memory>
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52 #include <utility>
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53 #include <vector>
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54
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55 using namespace llvm;
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56
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57 //===----------------------------------------------------------------------===//
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58 // Methods to implement the globals and functions lists.
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59 //
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60
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61 // Explicit instantiations of SymbolTableListTraits since some of the methods
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62 // are not in the public header file.
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63 template class llvm::SymbolTableListTraits<Function>;
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64 template class llvm::SymbolTableListTraits<GlobalVariable>;
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65 template class llvm::SymbolTableListTraits<GlobalAlias>;
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66 template class llvm::SymbolTableListTraits<GlobalIFunc>;
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67
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68 //===----------------------------------------------------------------------===//
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69 // Primitive Module methods.
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70 //
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71
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72 Module::Module(StringRef MID, LLVMContext &C)
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221
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73 : Context(C), ValSymTab(std::make_unique<ValueSymbolTable>(-1)),
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236
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74 ModuleID(std::string(MID)), SourceFileName(std::string(MID)), DL("") {
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150
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75 Context.addModule(this);
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76 }
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77
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78 Module::~Module() {
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79 Context.removeModule(this);
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80 dropAllReferences();
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81 GlobalList.clear();
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82 FunctionList.clear();
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83 AliasList.clear();
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84 IFuncList.clear();
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85 }
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86
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87 std::unique_ptr<RandomNumberGenerator>
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88 Module::createRNG(const StringRef Name) const {
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89 SmallString<32> Salt(Name);
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90
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91 // This RNG is guaranteed to produce the same random stream only
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92 // when the Module ID and thus the input filename is the same. This
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93 // might be problematic if the input filename extension changes
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94 // (e.g. from .c to .bc or .ll).
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95 //
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96 // We could store this salt in NamedMetadata, but this would make
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97 // the parameter non-const. This would unfortunately make this
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98 // interface unusable by any Machine passes, since they only have a
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99 // const reference to their IR Module. Alternatively we can always
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100 // store salt metadata from the Module constructor.
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101 Salt += sys::path::filename(getModuleIdentifier());
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102
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103 return std::unique_ptr<RandomNumberGenerator>(
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104 new RandomNumberGenerator(Salt));
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105 }
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106
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107 /// getNamedValue - Return the first global value in the module with
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108 /// the specified name, of arbitrary type. This method returns null
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109 /// if a global with the specified name is not found.
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110 GlobalValue *Module::getNamedValue(StringRef Name) const {
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111 return cast_or_null<GlobalValue>(getValueSymbolTable().lookup(Name));
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112 }
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113
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236
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114 unsigned Module::getNumNamedValues() const {
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115 return getValueSymbolTable().size();
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116 }
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117
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150
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118 /// getMDKindID - Return a unique non-zero ID for the specified metadata kind.
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119 /// This ID is uniqued across modules in the current LLVMContext.
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120 unsigned Module::getMDKindID(StringRef Name) const {
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121 return Context.getMDKindID(Name);
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122 }
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123
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124 /// getMDKindNames - Populate client supplied SmallVector with the name for
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125 /// custom metadata IDs registered in this LLVMContext. ID #0 is not used,
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126 /// so it is filled in as an empty string.
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127 void Module::getMDKindNames(SmallVectorImpl<StringRef> &Result) const {
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128 return Context.getMDKindNames(Result);
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129 }
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130
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131 void Module::getOperandBundleTags(SmallVectorImpl<StringRef> &Result) const {
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132 return Context.getOperandBundleTags(Result);
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133 }
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134
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135 //===----------------------------------------------------------------------===//
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136 // Methods for easy access to the functions in the module.
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137 //
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138
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139 // getOrInsertFunction - Look up the specified function in the module symbol
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140 // table. If it does not exist, add a prototype for the function and return
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141 // it. This is nice because it allows most passes to get away with not handling
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142 // the symbol table directly for this common task.
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143 //
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144 FunctionCallee Module::getOrInsertFunction(StringRef Name, FunctionType *Ty,
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145 AttributeList AttributeList) {
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146 // See if we have a definition for the specified function already.
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147 GlobalValue *F = getNamedValue(Name);
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148 if (!F) {
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149 // Nope, add it
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150 Function *New = Function::Create(Ty, GlobalVariable::ExternalLinkage,
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151 DL.getProgramAddressSpace(), Name);
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152 if (!New->isIntrinsic()) // Intrinsics get attrs set on construction
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153 New->setAttributes(AttributeList);
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154 FunctionList.push_back(New);
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155 return {Ty, New}; // Return the new prototype.
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156 }
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157
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158 // If the function exists but has the wrong type, return a bitcast to the
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159 // right type.
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160 auto *PTy = PointerType::get(Ty, F->getAddressSpace());
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161 if (F->getType() != PTy)
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162 return {Ty, ConstantExpr::getBitCast(F, PTy)};
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163
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164 // Otherwise, we just found the existing function or a prototype.
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165 return {Ty, F};
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166 }
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167
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168 FunctionCallee Module::getOrInsertFunction(StringRef Name, FunctionType *Ty) {
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169 return getOrInsertFunction(Name, Ty, AttributeList());
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170 }
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171
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172 // getFunction - Look up the specified function in the module symbol table.
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173 // If it does not exist, return null.
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174 //
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175 Function *Module::getFunction(StringRef Name) const {
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176 return dyn_cast_or_null<Function>(getNamedValue(Name));
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177 }
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178
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179 //===----------------------------------------------------------------------===//
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180 // Methods for easy access to the global variables in the module.
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181 //
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182
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183 /// getGlobalVariable - Look up the specified global variable in the module
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184 /// symbol table. If it does not exist, return null. The type argument
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185 /// should be the underlying type of the global, i.e., it should not have
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186 /// the top-level PointerType, which represents the address of the global.
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187 /// If AllowLocal is set to true, this function will return types that
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188 /// have an local. By default, these types are not returned.
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189 ///
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190 GlobalVariable *Module::getGlobalVariable(StringRef Name,
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191 bool AllowLocal) const {
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192 if (GlobalVariable *Result =
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193 dyn_cast_or_null<GlobalVariable>(getNamedValue(Name)))
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194 if (AllowLocal || !Result->hasLocalLinkage())
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195 return Result;
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196 return nullptr;
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197 }
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198
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199 /// getOrInsertGlobal - Look up the specified global in the module symbol table.
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200 /// 1. If it does not exist, add a declaration of the global and return it.
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201 /// 2. Else, the global exists but has the wrong type: return the function
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202 /// with a constantexpr cast to the right type.
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203 /// 3. Finally, if the existing global is the correct declaration, return the
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204 /// existing global.
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205 Constant *Module::getOrInsertGlobal(
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206 StringRef Name, Type *Ty,
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207 function_ref<GlobalVariable *()> CreateGlobalCallback) {
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208 // See if we have a definition for the specified global already.
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209 GlobalVariable *GV = dyn_cast_or_null<GlobalVariable>(getNamedValue(Name));
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210 if (!GV)
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211 GV = CreateGlobalCallback();
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212 assert(GV && "The CreateGlobalCallback is expected to create a global");
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213
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214 // If the variable exists but has the wrong type, return a bitcast to the
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215 // right type.
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216 Type *GVTy = GV->getType();
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217 PointerType *PTy = PointerType::get(Ty, GVTy->getPointerAddressSpace());
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218 if (GVTy != PTy)
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219 return ConstantExpr::getBitCast(GV, PTy);
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220
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221 // Otherwise, we just found the existing function or a prototype.
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222 return GV;
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223 }
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224
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225 // Overload to construct a global variable using its constructor's defaults.
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226 Constant *Module::getOrInsertGlobal(StringRef Name, Type *Ty) {
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227 return getOrInsertGlobal(Name, Ty, [&] {
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228 return new GlobalVariable(*this, Ty, false, GlobalVariable::ExternalLinkage,
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229 nullptr, Name);
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230 });
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231 }
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232
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233 //===----------------------------------------------------------------------===//
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234 // Methods for easy access to the global variables in the module.
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235 //
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236
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237 // getNamedAlias - Look up the specified global in the module symbol table.
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238 // If it does not exist, return null.
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239 //
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240 GlobalAlias *Module::getNamedAlias(StringRef Name) const {
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241 return dyn_cast_or_null<GlobalAlias>(getNamedValue(Name));
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242 }
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243
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244 GlobalIFunc *Module::getNamedIFunc(StringRef Name) const {
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245 return dyn_cast_or_null<GlobalIFunc>(getNamedValue(Name));
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246 }
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247
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248 /// getNamedMetadata - Return the first NamedMDNode in the module with the
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249 /// specified name. This method returns null if a NamedMDNode with the
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250 /// specified name is not found.
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251 NamedMDNode *Module::getNamedMetadata(const Twine &Name) const {
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252 SmallString<256> NameData;
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253 StringRef NameRef = Name.toStringRef(NameData);
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254 return NamedMDSymTab.lookup(NameRef);
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255 }
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256
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257 /// getOrInsertNamedMetadata - Return the first named MDNode in the module
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258 /// with the specified name. This method returns a new NamedMDNode if a
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259 /// NamedMDNode with the specified name is not found.
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260 NamedMDNode *Module::getOrInsertNamedMetadata(StringRef Name) {
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261 NamedMDNode *&NMD = NamedMDSymTab[Name];
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262 if (!NMD) {
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263 NMD = new NamedMDNode(Name);
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264 NMD->setParent(this);
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265 NamedMDList.push_back(NMD);
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266 }
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267 return NMD;
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268 }
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269
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270 /// eraseNamedMetadata - Remove the given NamedMDNode from this module and
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271 /// delete it.
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272 void Module::eraseNamedMetadata(NamedMDNode *NMD) {
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273 NamedMDSymTab.erase(NMD->getName());
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274 NamedMDList.erase(NMD->getIterator());
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275 }
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276
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277 bool Module::isValidModFlagBehavior(Metadata *MD, ModFlagBehavior &MFB) {
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278 if (ConstantInt *Behavior = mdconst::dyn_extract_or_null<ConstantInt>(MD)) {
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279 uint64_t Val = Behavior->getLimitedValue();
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280 if (Val >= ModFlagBehaviorFirstVal && Val <= ModFlagBehaviorLastVal) {
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281 MFB = static_cast<ModFlagBehavior>(Val);
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282 return true;
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283 }
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284 }
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285 return false;
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286 }
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287
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173
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288 bool Module::isValidModuleFlag(const MDNode &ModFlag, ModFlagBehavior &MFB,
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289 MDString *&Key, Metadata *&Val) {
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290 if (ModFlag.getNumOperands() < 3)
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291 return false;
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292 if (!isValidModFlagBehavior(ModFlag.getOperand(0), MFB))
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293 return false;
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294 MDString *K = dyn_cast_or_null<MDString>(ModFlag.getOperand(1));
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295 if (!K)
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296 return false;
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297 Key = K;
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298 Val = ModFlag.getOperand(2);
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299 return true;
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300 }
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301
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150
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302 /// getModuleFlagsMetadata - Returns the module flags in the provided vector.
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303 void Module::
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304 getModuleFlagsMetadata(SmallVectorImpl<ModuleFlagEntry> &Flags) const {
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305 const NamedMDNode *ModFlags = getModuleFlagsMetadata();
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306 if (!ModFlags) return;
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307
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308 for (const MDNode *Flag : ModFlags->operands()) {
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309 ModFlagBehavior MFB;
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173
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310 MDString *Key = nullptr;
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311 Metadata *Val = nullptr;
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312 if (isValidModuleFlag(*Flag, MFB, Key, Val)) {
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150
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313 // Check the operands of the MDNode before accessing the operands.
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314 // The verifier will actually catch these failures.
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315 Flags.push_back(ModuleFlagEntry(MFB, Key, Val));
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316 }
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317 }
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318 }
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319
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320 /// Return the corresponding value if Key appears in module flags, otherwise
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321 /// return null.
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322 Metadata *Module::getModuleFlag(StringRef Key) const {
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323 SmallVector<Module::ModuleFlagEntry, 8> ModuleFlags;
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324 getModuleFlagsMetadata(ModuleFlags);
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325 for (const ModuleFlagEntry &MFE : ModuleFlags) {
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326 if (Key == MFE.Key->getString())
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327 return MFE.Val;
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328 }
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329 return nullptr;
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330 }
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331
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332 /// getModuleFlagsMetadata - Returns the NamedMDNode in the module that
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333 /// represents module-level flags. This method returns null if there are no
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334 /// module-level flags.
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335 NamedMDNode *Module::getModuleFlagsMetadata() const {
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336 return getNamedMetadata("llvm.module.flags");
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337 }
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338
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339 /// getOrInsertModuleFlagsMetadata - Returns the NamedMDNode in the module that
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340 /// represents module-level flags. If module-level flags aren't found, it
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341 /// creates the named metadata that contains them.
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342 NamedMDNode *Module::getOrInsertModuleFlagsMetadata() {
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343 return getOrInsertNamedMetadata("llvm.module.flags");
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344 }
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345
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346 /// addModuleFlag - Add a module-level flag to the module-level flags
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347 /// metadata. It will create the module-level flags named metadata if it doesn't
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348 /// already exist.
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349 void Module::addModuleFlag(ModFlagBehavior Behavior, StringRef Key,
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350 Metadata *Val) {
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351 Type *Int32Ty = Type::getInt32Ty(Context);
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352 Metadata *Ops[3] = {
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353 ConstantAsMetadata::get(ConstantInt::get(Int32Ty, Behavior)),
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354 MDString::get(Context, Key), Val};
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355 getOrInsertModuleFlagsMetadata()->addOperand(MDNode::get(Context, Ops));
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356 }
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357 void Module::addModuleFlag(ModFlagBehavior Behavior, StringRef Key,
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358 Constant *Val) {
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359 addModuleFlag(Behavior, Key, ConstantAsMetadata::get(Val));
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360 }
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361 void Module::addModuleFlag(ModFlagBehavior Behavior, StringRef Key,
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362 uint32_t Val) {
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363 Type *Int32Ty = Type::getInt32Ty(Context);
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364 addModuleFlag(Behavior, Key, ConstantInt::get(Int32Ty, Val));
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365 }
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366 void Module::addModuleFlag(MDNode *Node) {
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367 assert(Node->getNumOperands() == 3 &&
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368 "Invalid number of operands for module flag!");
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369 assert(mdconst::hasa<ConstantInt>(Node->getOperand(0)) &&
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370 isa<MDString>(Node->getOperand(1)) &&
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371 "Invalid operand types for module flag!");
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372 getOrInsertModuleFlagsMetadata()->addOperand(Node);
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373 }
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374
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173
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375 void Module::setModuleFlag(ModFlagBehavior Behavior, StringRef Key,
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376 Metadata *Val) {
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377 NamedMDNode *ModFlags = getOrInsertModuleFlagsMetadata();
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378 // Replace the flag if it already exists.
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379 for (unsigned I = 0, E = ModFlags->getNumOperands(); I != E; ++I) {
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380 MDNode *Flag = ModFlags->getOperand(I);
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381 ModFlagBehavior MFB;
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382 MDString *K = nullptr;
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383 Metadata *V = nullptr;
|
|
|
384 if (isValidModuleFlag(*Flag, MFB, K, V) && K->getString() == Key) {
|
|
|
385 Flag->replaceOperandWith(2, Val);
|
|
|
386 return;
|
|
|
387 }
|
|
|
388 }
|
|
|
389 addModuleFlag(Behavior, Key, Val);
|
|
|
390 }
|
|
|
391
|
|
150
|
392 void Module::setDataLayout(StringRef Desc) {
|
|
|
393 DL.reset(Desc);
|
|
|
394 }
|
|
|
395
|
|
|
396 void Module::setDataLayout(const DataLayout &Other) { DL = Other; }
|
|
|
397
|
|
|
398 const DataLayout &Module::getDataLayout() const { return DL; }
|
|
|
399
|
|
|
400 DICompileUnit *Module::debug_compile_units_iterator::operator*() const {
|
|
|
401 return cast<DICompileUnit>(CUs->getOperand(Idx));
|
|
|
402 }
|
|
|
403 DICompileUnit *Module::debug_compile_units_iterator::operator->() const {
|
|
|
404 return cast<DICompileUnit>(CUs->getOperand(Idx));
|
|
|
405 }
|
|
|
406
|
|
|
407 void Module::debug_compile_units_iterator::SkipNoDebugCUs() {
|
|
|
408 while (CUs && (Idx < CUs->getNumOperands()) &&
|
|
|
409 ((*this)->getEmissionKind() == DICompileUnit::NoDebug))
|
|
|
410 ++Idx;
|
|
|
411 }
|
|
|
412
|
|
|
413 iterator_range<Module::global_object_iterator> Module::global_objects() {
|
|
|
414 return concat<GlobalObject>(functions(), globals());
|
|
|
415 }
|
|
|
416 iterator_range<Module::const_global_object_iterator>
|
|
|
417 Module::global_objects() const {
|
|
|
418 return concat<const GlobalObject>(functions(), globals());
|
|
|
419 }
|
|
|
420
|
|
|
421 iterator_range<Module::global_value_iterator> Module::global_values() {
|
|
|
422 return concat<GlobalValue>(functions(), globals(), aliases(), ifuncs());
|
|
|
423 }
|
|
|
424 iterator_range<Module::const_global_value_iterator>
|
|
|
425 Module::global_values() const {
|
|
|
426 return concat<const GlobalValue>(functions(), globals(), aliases(), ifuncs());
|
|
|
427 }
|
|
|
428
|
|
|
429 //===----------------------------------------------------------------------===//
|
|
|
430 // Methods to control the materialization of GlobalValues in the Module.
|
|
|
431 //
|
|
|
432 void Module::setMaterializer(GVMaterializer *GVM) {
|
|
|
433 assert(!Materializer &&
|
|
|
434 "Module already has a GVMaterializer. Call materializeAll"
|
|
|
435 " to clear it out before setting another one.");
|
|
|
436 Materializer.reset(GVM);
|
|
|
437 }
|
|
|
438
|
|
|
439 Error Module::materialize(GlobalValue *GV) {
|
|
|
440 if (!Materializer)
|
|
|
441 return Error::success();
|
|
|
442
|
|
|
443 return Materializer->materialize(GV);
|
|
|
444 }
|
|
|
445
|
|
|
446 Error Module::materializeAll() {
|
|
|
447 if (!Materializer)
|
|
|
448 return Error::success();
|
|
|
449 std::unique_ptr<GVMaterializer> M = std::move(Materializer);
|
|
|
450 return M->materializeModule();
|
|
|
451 }
|
|
|
452
|
|
|
453 Error Module::materializeMetadata() {
|
|
|
454 if (!Materializer)
|
|
|
455 return Error::success();
|
|
|
456 return Materializer->materializeMetadata();
|
|
|
457 }
|
|
|
458
|
|
|
459 //===----------------------------------------------------------------------===//
|
|
|
460 // Other module related stuff.
|
|
|
461 //
|
|
|
462
|
|
|
463 std::vector<StructType *> Module::getIdentifiedStructTypes() const {
|
|
|
464 // If we have a materializer, it is possible that some unread function
|
|
|
465 // uses a type that is currently not visible to a TypeFinder, so ask
|
|
|
466 // the materializer which types it created.
|
|
|
467 if (Materializer)
|
|
|
468 return Materializer->getIdentifiedStructTypes();
|
|
|
469
|
|
|
470 std::vector<StructType *> Ret;
|
|
|
471 TypeFinder SrcStructTypes;
|
|
|
472 SrcStructTypes.run(*this, true);
|
|
|
473 Ret.assign(SrcStructTypes.begin(), SrcStructTypes.end());
|
|
|
474 return Ret;
|
|
|
475 }
|
|
|
476
|
|
221
|
477 std::string Module::getUniqueIntrinsicName(StringRef BaseName, Intrinsic::ID Id,
|
|
|
478 const FunctionType *Proto) {
|
|
|
479 auto Encode = [&BaseName](unsigned Suffix) {
|
|
|
480 return (Twine(BaseName) + "." + Twine(Suffix)).str();
|
|
|
481 };
|
|
|
482
|
|
|
483 {
|
|
|
484 // fast path - the prototype is already known
|
|
|
485 auto UinItInserted = UniquedIntrinsicNames.insert({{Id, Proto}, 0});
|
|
|
486 if (!UinItInserted.second)
|
|
|
487 return Encode(UinItInserted.first->second);
|
|
|
488 }
|
|
|
489
|
|
|
490 // Not known yet. A new entry was created with index 0. Check if there already
|
|
|
491 // exists a matching declaration, or select a new entry.
|
|
|
492
|
|
|
493 // Start looking for names with the current known maximum count (or 0).
|
|
|
494 auto NiidItInserted = CurrentIntrinsicIds.insert({BaseName, 0});
|
|
|
495 unsigned Count = NiidItInserted.first->second;
|
|
|
496
|
|
|
497 // This might be slow if a whole population of intrinsics already existed, but
|
|
|
498 // we cache the values for later usage.
|
|
|
499 std::string NewName;
|
|
|
500 while (true) {
|
|
|
501 NewName = Encode(Count);
|
|
|
502 GlobalValue *F = getNamedValue(NewName);
|
|
|
503 if (!F) {
|
|
|
504 // Reserve this entry for the new proto
|
|
|
505 UniquedIntrinsicNames[{Id, Proto}] = Count;
|
|
|
506 break;
|
|
|
507 }
|
|
|
508
|
|
|
509 // A declaration with this name already exists. Remember it.
|
|
223
|
510 FunctionType *FT = dyn_cast<FunctionType>(F->getValueType());
|
|
221
|
511 auto UinItInserted = UniquedIntrinsicNames.insert({{Id, FT}, Count});
|
|
|
512 if (FT == Proto) {
|
|
|
513 // It was a declaration for our prototype. This entry was allocated in the
|
|
|
514 // beginning. Update the count to match the existing declaration.
|
|
|
515 UinItInserted.first->second = Count;
|
|
|
516 break;
|
|
|
517 }
|
|
|
518
|
|
|
519 ++Count;
|
|
|
520 }
|
|
|
521
|
|
|
522 NiidItInserted.first->second = Count + 1;
|
|
|
523
|
|
|
524 return NewName;
|
|
|
525 }
|
|
|
526
|
|
150
|
527 // dropAllReferences() - This function causes all the subelements to "let go"
|
|
|
528 // of all references that they are maintaining. This allows one to 'delete' a
|
|
|
529 // whole module at a time, even though there may be circular references... first
|
|
|
530 // all references are dropped, and all use counts go to zero. Then everything
|
|
|
531 // is deleted for real. Note that no operations are valid on an object that
|
|
|
532 // has "dropped all references", except operator delete.
|
|
|
533 //
|
|
|
534 void Module::dropAllReferences() {
|
|
|
535 for (Function &F : *this)
|
|
|
536 F.dropAllReferences();
|
|
|
537
|
|
|
538 for (GlobalVariable &GV : globals())
|
|
|
539 GV.dropAllReferences();
|
|
|
540
|
|
|
541 for (GlobalAlias &GA : aliases())
|
|
|
542 GA.dropAllReferences();
|
|
|
543
|
|
|
544 for (GlobalIFunc &GIF : ifuncs())
|
|
|
545 GIF.dropAllReferences();
|
|
|
546 }
|
|
|
547
|
|
|
548 unsigned Module::getNumberRegisterParameters() const {
|
|
|
549 auto *Val =
|
|
|
550 cast_or_null<ConstantAsMetadata>(getModuleFlag("NumRegisterParameters"));
|
|
|
551 if (!Val)
|
|
|
552 return 0;
|
|
|
553 return cast<ConstantInt>(Val->getValue())->getZExtValue();
|
|
|
554 }
|
|
|
555
|
|
|
556 unsigned Module::getDwarfVersion() const {
|
|
|
557 auto *Val = cast_or_null<ConstantAsMetadata>(getModuleFlag("Dwarf Version"));
|
|
|
558 if (!Val)
|
|
|
559 return 0;
|
|
|
560 return cast<ConstantInt>(Val->getValue())->getZExtValue();
|
|
|
561 }
|
|
|
562
|
|
221
|
563 bool Module::isDwarf64() const {
|
|
|
564 auto *Val = cast_or_null<ConstantAsMetadata>(getModuleFlag("DWARF64"));
|
|
|
565 return Val && cast<ConstantInt>(Val->getValue())->isOne();
|
|
|
566 }
|
|
|
567
|
|
150
|
568 unsigned Module::getCodeViewFlag() const {
|
|
|
569 auto *Val = cast_or_null<ConstantAsMetadata>(getModuleFlag("CodeView"));
|
|
|
570 if (!Val)
|
|
|
571 return 0;
|
|
|
572 return cast<ConstantInt>(Val->getValue())->getZExtValue();
|
|
|
573 }
|
|
|
574
|
|
221
|
575 unsigned Module::getInstructionCount() const {
|
|
150
|
576 unsigned NumInstrs = 0;
|
|
221
|
577 for (const Function &F : FunctionList)
|
|
150
|
578 NumInstrs += F.getInstructionCount();
|
|
|
579 return NumInstrs;
|
|
|
580 }
|
|
|
581
|
|
|
582 Comdat *Module::getOrInsertComdat(StringRef Name) {
|
|
|
583 auto &Entry = *ComdatSymTab.insert(std::make_pair(Name, Comdat())).first;
|
|
|
584 Entry.second.Name = &Entry;
|
|
|
585 return &Entry.second;
|
|
|
586 }
|
|
|
587
|
|
|
588 PICLevel::Level Module::getPICLevel() const {
|
|
|
589 auto *Val = cast_or_null<ConstantAsMetadata>(getModuleFlag("PIC Level"));
|
|
|
590
|
|
|
591 if (!Val)
|
|
|
592 return PICLevel::NotPIC;
|
|
|
593
|
|
|
594 return static_cast<PICLevel::Level>(
|
|
|
595 cast<ConstantInt>(Val->getValue())->getZExtValue());
|
|
|
596 }
|
|
|
597
|
|
|
598 void Module::setPICLevel(PICLevel::Level PL) {
|
|
236
|
599 // The merge result of a non-PIC object and a PIC object can only be reliably
|
|
|
600 // used as a non-PIC object, so use the Min merge behavior.
|
|
|
601 addModuleFlag(ModFlagBehavior::Min, "PIC Level", PL);
|
|
150
|
602 }
|
|
|
603
|
|
|
604 PIELevel::Level Module::getPIELevel() const {
|
|
|
605 auto *Val = cast_or_null<ConstantAsMetadata>(getModuleFlag("PIE Level"));
|
|
|
606
|
|
|
607 if (!Val)
|
|
|
608 return PIELevel::Default;
|
|
|
609
|
|
|
610 return static_cast<PIELevel::Level>(
|
|
|
611 cast<ConstantInt>(Val->getValue())->getZExtValue());
|
|
|
612 }
|
|
|
613
|
|
|
614 void Module::setPIELevel(PIELevel::Level PL) {
|
|
|
615 addModuleFlag(ModFlagBehavior::Max, "PIE Level", PL);
|
|
|
616 }
|
|
|
617
|
|
|
618 Optional<CodeModel::Model> Module::getCodeModel() const {
|
|
|
619 auto *Val = cast_or_null<ConstantAsMetadata>(getModuleFlag("Code Model"));
|
|
|
620
|
|
|
621 if (!Val)
|
|
|
622 return None;
|
|
|
623
|
|
|
624 return static_cast<CodeModel::Model>(
|
|
|
625 cast<ConstantInt>(Val->getValue())->getZExtValue());
|
|
|
626 }
|
|
|
627
|
|
|
628 void Module::setCodeModel(CodeModel::Model CL) {
|
|
|
629 // Linking object files with different code models is undefined behavior
|
|
|
630 // because the compiler would have to generate additional code (to span
|
|
|
631 // longer jumps) if a larger code model is used with a smaller one.
|
|
|
632 // Therefore we will treat attempts to mix code models as an error.
|
|
|
633 addModuleFlag(ModFlagBehavior::Error, "Code Model", CL);
|
|
|
634 }
|
|
|
635
|
|
|
636 void Module::setProfileSummary(Metadata *M, ProfileSummary::Kind Kind) {
|
|
|
637 if (Kind == ProfileSummary::PSK_CSInstr)
|
|
173
|
638 setModuleFlag(ModFlagBehavior::Error, "CSProfileSummary", M);
|
|
150
|
639 else
|
|
173
|
640 setModuleFlag(ModFlagBehavior::Error, "ProfileSummary", M);
|
|
150
|
641 }
|
|
|
642
|
|
221
|
643 Metadata *Module::getProfileSummary(bool IsCS) const {
|
|
150
|
644 return (IsCS ? getModuleFlag("CSProfileSummary")
|
|
|
645 : getModuleFlag("ProfileSummary"));
|
|
|
646 }
|
|
|
647
|
|
|
648 bool Module::getSemanticInterposition() const {
|
|
|
649 Metadata *MF = getModuleFlag("SemanticInterposition");
|
|
|
650
|
|
|
651 auto *Val = cast_or_null<ConstantAsMetadata>(MF);
|
|
|
652 if (!Val)
|
|
|
653 return false;
|
|
|
654
|
|
|
655 return cast<ConstantInt>(Val->getValue())->getZExtValue();
|
|
|
656 }
|
|
|
657
|
|
|
658 void Module::setSemanticInterposition(bool SI) {
|
|
|
659 addModuleFlag(ModFlagBehavior::Error, "SemanticInterposition", SI);
|
|
|
660 }
|
|
|
661
|
|
|
662 void Module::setOwnedMemoryBuffer(std::unique_ptr<MemoryBuffer> MB) {
|
|
|
663 OwnedMemoryBuffer = std::move(MB);
|
|
|
664 }
|
|
|
665
|
|
|
666 bool Module::getRtLibUseGOT() const {
|
|
|
667 auto *Val = cast_or_null<ConstantAsMetadata>(getModuleFlag("RtLibUseGOT"));
|
|
|
668 return Val && (cast<ConstantInt>(Val->getValue())->getZExtValue() > 0);
|
|
|
669 }
|
|
|
670
|
|
|
671 void Module::setRtLibUseGOT() {
|
|
|
672 addModuleFlag(ModFlagBehavior::Max, "RtLibUseGOT", 1);
|
|
|
673 }
|
|
|
674
|
|
236
|
675 UWTableKind Module::getUwtable() const {
|
|
|
676 if (auto *Val = cast_or_null<ConstantAsMetadata>(getModuleFlag("uwtable")))
|
|
|
677 return UWTableKind(cast<ConstantInt>(Val->getValue())->getZExtValue());
|
|
|
678 return UWTableKind::None;
|
|
221
|
679 }
|
|
|
680
|
|
236
|
681 void Module::setUwtable(UWTableKind Kind) {
|
|
|
682 addModuleFlag(ModFlagBehavior::Max, "uwtable", uint32_t(Kind));
|
|
|
683 }
|
|
221
|
684
|
|
|
685 FramePointerKind Module::getFramePointer() const {
|
|
|
686 auto *Val = cast_or_null<ConstantAsMetadata>(getModuleFlag("frame-pointer"));
|
|
|
687 return static_cast<FramePointerKind>(
|
|
|
688 Val ? cast<ConstantInt>(Val->getValue())->getZExtValue() : 0);
|
|
|
689 }
|
|
|
690
|
|
|
691 void Module::setFramePointer(FramePointerKind Kind) {
|
|
|
692 addModuleFlag(ModFlagBehavior::Max, "frame-pointer", static_cast<int>(Kind));
|
|
|
693 }
|
|
|
694
|
|
|
695 StringRef Module::getStackProtectorGuard() const {
|
|
|
696 Metadata *MD = getModuleFlag("stack-protector-guard");
|
|
|
697 if (auto *MDS = dyn_cast_or_null<MDString>(MD))
|
|
|
698 return MDS->getString();
|
|
|
699 return {};
|
|
|
700 }
|
|
|
701
|
|
|
702 void Module::setStackProtectorGuard(StringRef Kind) {
|
|
|
703 MDString *ID = MDString::get(getContext(), Kind);
|
|
|
704 addModuleFlag(ModFlagBehavior::Error, "stack-protector-guard", ID);
|
|
|
705 }
|
|
|
706
|
|
|
707 StringRef Module::getStackProtectorGuardReg() const {
|
|
|
708 Metadata *MD = getModuleFlag("stack-protector-guard-reg");
|
|
|
709 if (auto *MDS = dyn_cast_or_null<MDString>(MD))
|
|
|
710 return MDS->getString();
|
|
|
711 return {};
|
|
|
712 }
|
|
|
713
|
|
|
714 void Module::setStackProtectorGuardReg(StringRef Reg) {
|
|
|
715 MDString *ID = MDString::get(getContext(), Reg);
|
|
|
716 addModuleFlag(ModFlagBehavior::Error, "stack-protector-guard-reg", ID);
|
|
|
717 }
|
|
|
718
|
|
236
|
719 StringRef Module::getStackProtectorGuardSymbol() const {
|
|
|
720 Metadata *MD = getModuleFlag("stack-protector-guard-symbol");
|
|
|
721 if (auto *MDS = dyn_cast_or_null<MDString>(MD))
|
|
|
722 return MDS->getString();
|
|
|
723 return {};
|
|
|
724 }
|
|
|
725
|
|
|
726 void Module::setStackProtectorGuardSymbol(StringRef Symbol) {
|
|
|
727 MDString *ID = MDString::get(getContext(), Symbol);
|
|
|
728 addModuleFlag(ModFlagBehavior::Error, "stack-protector-guard-symbol", ID);
|
|
|
729 }
|
|
|
730
|
|
221
|
731 int Module::getStackProtectorGuardOffset() const {
|
|
|
732 Metadata *MD = getModuleFlag("stack-protector-guard-offset");
|
|
|
733 if (auto *CI = mdconst::dyn_extract_or_null<ConstantInt>(MD))
|
|
|
734 return CI->getSExtValue();
|
|
|
735 return INT_MAX;
|
|
|
736 }
|
|
|
737
|
|
|
738 void Module::setStackProtectorGuardOffset(int Offset) {
|
|
|
739 addModuleFlag(ModFlagBehavior::Error, "stack-protector-guard-offset", Offset);
|
|
|
740 }
|
|
|
741
|
|
223
|
742 unsigned Module::getOverrideStackAlignment() const {
|
|
|
743 Metadata *MD = getModuleFlag("override-stack-alignment");
|
|
|
744 if (auto *CI = mdconst::dyn_extract_or_null<ConstantInt>(MD))
|
|
|
745 return CI->getZExtValue();
|
|
|
746 return 0;
|
|
|
747 }
|
|
|
748
|
|
|
749 void Module::setOverrideStackAlignment(unsigned Align) {
|
|
|
750 addModuleFlag(ModFlagBehavior::Error, "override-stack-alignment", Align);
|
|
|
751 }
|
|
|
752
|
|
236
|
753 static void addSDKVersionMD(const VersionTuple &V, Module &M, StringRef Name) {
|
|
150
|
754 SmallVector<unsigned, 3> Entries;
|
|
|
755 Entries.push_back(V.getMajor());
|
|
|
756 if (auto Minor = V.getMinor()) {
|
|
|
757 Entries.push_back(*Minor);
|
|
|
758 if (auto Subminor = V.getSubminor())
|
|
|
759 Entries.push_back(*Subminor);
|
|
|
760 // Ignore the 'build' component as it can't be represented in the object
|
|
|
761 // file.
|
|
|
762 }
|
|
236
|
763 M.addModuleFlag(Module::ModFlagBehavior::Warning, Name,
|
|
|
764 ConstantDataArray::get(M.getContext(), Entries));
|
|
150
|
765 }
|
|
|
766
|
|
236
|
767 void Module::setSDKVersion(const VersionTuple &V) {
|
|
|
768 addSDKVersionMD(V, *this, "SDK Version");
|
|
|
769 }
|
|
|
770
|
|
|
771 static VersionTuple getSDKVersionMD(Metadata *MD) {
|
|
|
772 auto *CM = dyn_cast_or_null<ConstantAsMetadata>(MD);
|
|
150
|
773 if (!CM)
|
|
|
774 return {};
|
|
|
775 auto *Arr = dyn_cast_or_null<ConstantDataArray>(CM->getValue());
|
|
|
776 if (!Arr)
|
|
|
777 return {};
|
|
|
778 auto getVersionComponent = [&](unsigned Index) -> Optional<unsigned> {
|
|
|
779 if (Index >= Arr->getNumElements())
|
|
|
780 return None;
|
|
|
781 return (unsigned)Arr->getElementAsInteger(Index);
|
|
|
782 };
|
|
|
783 auto Major = getVersionComponent(0);
|
|
|
784 if (!Major)
|
|
|
785 return {};
|
|
|
786 VersionTuple Result = VersionTuple(*Major);
|
|
|
787 if (auto Minor = getVersionComponent(1)) {
|
|
|
788 Result = VersionTuple(*Major, *Minor);
|
|
|
789 if (auto Subminor = getVersionComponent(2)) {
|
|
|
790 Result = VersionTuple(*Major, *Minor, *Subminor);
|
|
|
791 }
|
|
|
792 }
|
|
|
793 return Result;
|
|
|
794 }
|
|
|
795
|
|
236
|
796 VersionTuple Module::getSDKVersion() const {
|
|
|
797 return getSDKVersionMD(getModuleFlag("SDK Version"));
|
|
|
798 }
|
|
|
799
|
|
150
|
800 GlobalVariable *llvm::collectUsedGlobalVariables(
|
|
221
|
801 const Module &M, SmallVectorImpl<GlobalValue *> &Vec, bool CompilerUsed) {
|
|
150
|
802 const char *Name = CompilerUsed ? "llvm.compiler.used" : "llvm.used";
|
|
|
803 GlobalVariable *GV = M.getGlobalVariable(Name);
|
|
|
804 if (!GV || !GV->hasInitializer())
|
|
|
805 return GV;
|
|
|
806
|
|
|
807 const ConstantArray *Init = cast<ConstantArray>(GV->getInitializer());
|
|
|
808 for (Value *Op : Init->operands()) {
|
|
|
809 GlobalValue *G = cast<GlobalValue>(Op->stripPointerCasts());
|
|
221
|
810 Vec.push_back(G);
|
|
150
|
811 }
|
|
|
812 return GV;
|
|
|
813 }
|
|
221
|
814
|
|
|
815 void Module::setPartialSampleProfileRatio(const ModuleSummaryIndex &Index) {
|
|
|
816 if (auto *SummaryMD = getProfileSummary(/*IsCS*/ false)) {
|
|
|
817 std::unique_ptr<ProfileSummary> ProfileSummary(
|
|
|
818 ProfileSummary::getFromMD(SummaryMD));
|
|
|
819 if (ProfileSummary) {
|
|
|
820 if (ProfileSummary->getKind() != ProfileSummary::PSK_Sample ||
|
|
|
821 !ProfileSummary->isPartialProfile())
|
|
|
822 return;
|
|
|
823 uint64_t BlockCount = Index.getBlockCount();
|
|
|
824 uint32_t NumCounts = ProfileSummary->getNumCounts();
|
|
|
825 if (!NumCounts)
|
|
|
826 return;
|
|
|
827 double Ratio = (double)BlockCount / NumCounts;
|
|
|
828 ProfileSummary->setPartialProfileRatio(Ratio);
|
|
|
829 setProfileSummary(ProfileSummary->getMD(getContext()),
|
|
|
830 ProfileSummary::PSK_Sample);
|
|
|
831 }
|
|
|
832 }
|
|
|
833 }
|
|
236
|
834
|
|
|
835 StringRef Module::getDarwinTargetVariantTriple() const {
|
|
|
836 if (const auto *MD = getModuleFlag("darwin.target_variant.triple"))
|
|
|
837 return cast<MDString>(MD)->getString();
|
|
|
838 return "";
|
|
|
839 }
|
|
|
840
|
|
|
841 void Module::setDarwinTargetVariantTriple(StringRef T) {
|
|
|
842 addModuleFlag(ModFlagBehavior::Override, "darwin.target_variant.triple",
|
|
|
843 MDString::get(getContext(), T));
|
|
|
844 }
|
|
|
845
|
|
|
846 VersionTuple Module::getDarwinTargetVariantSDKVersion() const {
|
|
|
847 return getSDKVersionMD(getModuleFlag("darwin.target_variant.SDK Version"));
|
|
|
848 }
|
|
|
849
|
|
|
850 void Module::setDarwinTargetVariantSDKVersion(VersionTuple Version) {
|
|
|
851 addSDKVersionMD(Version, *this, "darwin.target_variant.SDK Version");
|
|
|
852 }
|
