void TypeFinder::Run(const Module &M) { AddModuleTypesToPrinter(TP,&M); // Get types from the type symbol table. This gets opaque types referened // only through derived named types. const TypeSymbolTable &ST = M.getTypeSymbolTable(); for (TypeSymbolTable::const_iterator TI = ST.begin(), E = ST.end(); TI != E; ++TI) IncorporateType(TI->second); // Get types from global variables. for (Module::const_global_iterator I = M.global_begin(), E = M.global_end(); I != E; ++I) { IncorporateType(I->getType()); if (I->hasInitializer()) IncorporateValue(I->getInitializer()); } // Get types from aliases. for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end(); I != E; ++I) { IncorporateType(I->getType()); IncorporateValue(I->getAliasee()); } // Get types from functions. for (Module::const_iterator FI = M.begin(), E = M.end(); FI != E; ++FI) { IncorporateType(FI->getType()); for (Function::const_iterator BB = FI->begin(), E = FI->end(); BB != E;++BB) for (BasicBlock::const_iterator II = BB->begin(), E = BB->end(); II != E; ++II) { const Instruction &I = *II; // Incorporate the type of the instruction and all its operands. IncorporateType(I.getType()); for (User::const_op_iterator OI = I.op_begin(), OE = I.op_end(); OI != OE; ++OI) IncorporateValue(*OI); } } }
ValueEnumerator::ValueEnumerator(const Module &M) { if (shouldPreserveBitcodeUseListOrder()) UseListOrders = predictUseListOrder(M); // Enumerate the global variables. for (Module::const_global_iterator I = M.global_begin(), E = M.global_end(); I != E; ++I) EnumerateValue(I); // Enumerate the functions. for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I) { EnumerateValue(I); EnumerateAttributes(cast<Function>(I)->getAttributes()); } // Enumerate the aliases. for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end(); I != E; ++I) EnumerateValue(I); // Remember what is the cutoff between globalvalue's and other constants. unsigned FirstConstant = Values.size(); // Enumerate the global variable initializers. for (Module::const_global_iterator I = M.global_begin(), E = M.global_end(); I != E; ++I) if (I->hasInitializer()) EnumerateValue(I->getInitializer()); // Enumerate the aliasees. for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end(); I != E; ++I) EnumerateValue(I->getAliasee()); // Enumerate the prefix data constants. for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I) if (I->hasPrefixData()) EnumerateValue(I->getPrefixData()); // Insert constants and metadata that are named at module level into the slot // pool so that the module symbol table can refer to them... EnumerateValueSymbolTable(M.getValueSymbolTable()); EnumerateNamedMetadata(M); SmallVector<std::pair<unsigned, MDNode *>, 8> MDs; // Enumerate types used by function bodies and argument lists. for (const Function &F : M) { for (const Argument &A : F.args()) EnumerateType(A.getType()); for (const BasicBlock &BB : F) for (const Instruction &I : BB) { for (const Use &Op : I.operands()) { if (MDNode *MD = dyn_cast<MDNode>(&Op)) if (MD->isFunctionLocal() && MD->getFunction()) // These will get enumerated during function-incorporation. continue; EnumerateOperandType(Op); } EnumerateType(I.getType()); if (const CallInst *CI = dyn_cast<CallInst>(&I)) EnumerateAttributes(CI->getAttributes()); else if (const InvokeInst *II = dyn_cast<InvokeInst>(&I)) EnumerateAttributes(II->getAttributes()); // Enumerate metadata attached with this instruction. MDs.clear(); I.getAllMetadataOtherThanDebugLoc(MDs); for (unsigned i = 0, e = MDs.size(); i != e; ++i) EnumerateMetadata(MDs[i].second); if (!I.getDebugLoc().isUnknown()) { MDNode *Scope, *IA; I.getDebugLoc().getScopeAndInlinedAt(Scope, IA, I.getContext()); if (Scope) EnumerateMetadata(Scope); if (IA) EnumerateMetadata(IA); } } } // Optimize constant ordering. OptimizeConstants(FirstConstant, Values.size()); }
std::unique_ptr<Module> llvm::CloneModule( const Module *M, ValueToValueMapTy &VMap, std::function<bool(const GlobalValue *)> ShouldCloneDefinition) { // First off, we need to create the new module. std::unique_ptr<Module> New = llvm::make_unique<Module>(M->getModuleIdentifier(), M->getContext()); New->setDataLayout(M->getDataLayout()); New->setTargetTriple(M->getTargetTriple()); New->setModuleInlineAsm(M->getModuleInlineAsm()); // Loop over all of the global variables, making corresponding globals in the // new module. Here we add them to the VMap and to the new Module. We // don't worry about attributes or initializers, they will come later. // for (Module::const_global_iterator I = M->global_begin(), E = M->global_end(); I != E; ++I) { GlobalVariable *GV = new GlobalVariable(*New, I->getValueType(), I->isConstant(), I->getLinkage(), (Constant*) nullptr, I->getName(), (GlobalVariable*) nullptr, I->getThreadLocalMode(), I->getType()->getAddressSpace()); GV->copyAttributesFrom(&*I); VMap[&*I] = GV; } // Loop over the functions in the module, making external functions as before for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I) { Function *NF = Function::Create(cast<FunctionType>(I->getValueType()), I->getLinkage(), I->getName(), New.get()); NF->copyAttributesFrom(&*I); VMap[&*I] = NF; } // Loop over the aliases in the module for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); I != E; ++I) { if (!ShouldCloneDefinition(&*I)) { // An alias cannot act as an external reference, so we need to create // either a function or a global variable depending on the value type. // FIXME: Once pointee types are gone we can probably pick one or the // other. GlobalValue *GV; if (I->getValueType()->isFunctionTy()) GV = Function::Create(cast<FunctionType>(I->getValueType()), GlobalValue::ExternalLinkage, I->getName(), New.get()); else GV = new GlobalVariable( *New, I->getValueType(), false, GlobalValue::ExternalLinkage, (Constant *)nullptr, I->getName(), (GlobalVariable *)nullptr, I->getThreadLocalMode(), I->getType()->getAddressSpace()); VMap[&*I] = GV; // We do not copy attributes (mainly because copying between different // kinds of globals is forbidden), but this is generally not required for // correctness. continue; } auto *GA = GlobalAlias::create(I->getValueType(), I->getType()->getPointerAddressSpace(), I->getLinkage(), I->getName(), New.get()); GA->copyAttributesFrom(&*I); VMap[&*I] = GA; } // Now that all of the things that global variable initializer can refer to // have been created, loop through and copy the global variable referrers // over... We also set the attributes on the global now. // for (Module::const_global_iterator I = M->global_begin(), E = M->global_end(); I != E; ++I) { GlobalVariable *GV = cast<GlobalVariable>(VMap[&*I]); if (!ShouldCloneDefinition(&*I)) { // Skip after setting the correct linkage for an external reference. GV->setLinkage(GlobalValue::ExternalLinkage); continue; } if (I->hasInitializer()) GV->setInitializer(MapValue(I->getInitializer(), VMap)); } // Similarly, copy over function bodies now... // for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I) { Function *F = cast<Function>(VMap[&*I]); if (!ShouldCloneDefinition(&*I)) { // Skip after setting the correct linkage for an external reference. F->setLinkage(GlobalValue::ExternalLinkage); // Personality function is not valid on a declaration. F->setPersonalityFn(nullptr); continue; } if (!I->isDeclaration()) { Function::arg_iterator DestI = F->arg_begin(); for (Function::const_arg_iterator J = I->arg_begin(); J != I->arg_end(); ++J) { DestI->setName(J->getName()); VMap[&*J] = &*DestI++; } SmallVector<ReturnInst*, 8> Returns; // Ignore returns cloned. CloneFunctionInto(F, &*I, VMap, /*ModuleLevelChanges=*/true, Returns); } if (I->hasPersonalityFn()) F->setPersonalityFn(MapValue(I->getPersonalityFn(), VMap)); } // And aliases for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); I != E; ++I) { // We already dealt with undefined aliases above. if (!ShouldCloneDefinition(&*I)) continue; GlobalAlias *GA = cast<GlobalAlias>(VMap[&*I]); if (const Constant *C = I->getAliasee()) GA->setAliasee(MapValue(C, VMap)); } // And named metadata.... for (Module::const_named_metadata_iterator I = M->named_metadata_begin(), E = M->named_metadata_end(); I != E; ++I) { const NamedMDNode &NMD = *I; NamedMDNode *NewNMD = New->getOrInsertNamedMetadata(NMD.getName()); for (unsigned i = 0, e = NMD.getNumOperands(); i != e; ++i) NewNMD->addOperand(MapMetadata(NMD.getOperand(i), VMap)); } return New; }
/// NaClValueEnumerator - Enumerate module-level information. NaClValueEnumerator::NaClValueEnumerator(const Module *M) { // Create map for counting frequency of types, and set field // TypeCountMap accordingly. Note: Pointer field TypeCountMap is // used to deal with the fact that types are added through various // method calls in this routine. Rather than pass it as an argument, // we use a field. The field is a pointer so that the memory // footprint of count_map can be garbage collected when this // constructor completes. TypeCountMapType count_map; TypeCountMap = &count_map; IntPtrType = IntegerType::get(M->getContext(), PNaClIntPtrTypeBitSize); // Enumerate the functions. Note: We do this before global // variables, so that global variable initializations can refer to // the functions without a forward reference. for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I) { EnumerateValue(I); } // Enumerate the global variables. FirstGlobalVarID = Values.size(); for (Module::const_global_iterator I = M->global_begin(), E = M->global_end(); I != E; ++I) EnumerateValue(I); NumGlobalVarIDs = Values.size() - FirstGlobalVarID; // Enumerate the aliases. for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); I != E; ++I) EnumerateValue(I); // Remember what is the cutoff between globalvalue's and other constants. unsigned FirstConstant = Values.size(); // Skip global variable initializers since they are handled within // WriteGlobalVars of file NaClBitcodeWriter.cpp. // Enumerate the aliasees. for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); I != E; ++I) EnumerateValue(I->getAliasee()); // Insert constants that are named at module level into the slot // pool so that the module symbol table can refer to them... EnumerateValueSymbolTable(M->getValueSymbolTable()); // Enumerate types used by function bodies and argument lists. for (Module::const_iterator F = M->begin(), E = M->end(); F != E; ++F) { for (Function::const_arg_iterator I = F->arg_begin(), E = F->arg_end(); I != E; ++I) EnumerateType(I->getType()); for (Function::const_iterator BB = F->begin(), E = F->end(); BB != E; ++BB) for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E;++I){ // Don't generate types for elided pointer casts! if (IsElidedCast(I)) continue; if (const SwitchInst *SI = dyn_cast<SwitchInst>(I)) { // Handle switch instruction specially, so that we don't // write out unnecessary vector/array types used to model case // selectors. EnumerateOperandType(SI->getCondition()); } else { for (User::const_op_iterator OI = I->op_begin(), E = I->op_end(); OI != E; ++OI) { EnumerateOperandType(*OI); } } EnumerateType(I->getType()); } } // Optimized type indicies to put "common" expected types in with small // indices. OptimizeTypes(M); TypeCountMap = NULL; // Optimize constant ordering. OptimizeConstants(FirstConstant, Values.size()); }
void TypeFinder::run(const Module &M, bool onlyNamed) { OnlyNamed = onlyNamed; // Get types from global variables. for (Module::const_global_iterator I = M.global_begin(), E = M.global_end(); I != E; ++I) { incorporateType(I->getType()); if (I->hasInitializer()) incorporateValue(I->getInitializer()); } // Get types from aliases. for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end(); I != E; ++I) { incorporateType(I->getType()); if (const Value *Aliasee = I->getAliasee()) incorporateValue(Aliasee); } // Get types from functions. SmallVector<std::pair<unsigned, MDNode *>, 4> MDForInst; for (Module::const_iterator FI = M.begin(), E = M.end(); FI != E; ++FI) { incorporateType(FI->getType()); if (FI->hasPrefixData()) incorporateValue(FI->getPrefixData()); if (FI->hasPrologueData()) incorporateValue(FI->getPrologueData()); if (FI->hasPersonalityFn()) incorporateValue(FI->getPersonalityFn()); // First incorporate the arguments. for (Function::const_arg_iterator AI = FI->arg_begin(), AE = FI->arg_end(); AI != AE; ++AI) incorporateValue(AI); for (Function::const_iterator BB = FI->begin(), E = FI->end(); BB != E; ++BB) for (BasicBlock::const_iterator II = BB->begin(), E = BB->end(); II != E; ++II) { const Instruction &I = *II; // Incorporate the type of the instruction. incorporateType(I.getType()); // Incorporate non-instruction operand types. (We are incorporating all // instructions with this loop.) for (User::const_op_iterator OI = I.op_begin(), OE = I.op_end(); OI != OE; ++OI) if (*OI && !isa<Instruction>(OI)) incorporateValue(*OI); // Incorporate types hiding in metadata. I.getAllMetadataOtherThanDebugLoc(MDForInst); for (unsigned i = 0, e = MDForInst.size(); i != e; ++i) incorporateMDNode(MDForInst[i].second); MDForInst.clear(); } } for (Module::const_named_metadata_iterator I = M.named_metadata_begin(), E = M.named_metadata_end(); I != E; ++I) { const NamedMDNode *NMD = I; for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) incorporateMDNode(NMD->getOperand(i)); } }
Module *llvm::CloneModule(const Module *M, ValueToValueMapTy &VMap) { // First off, we need to create the new module. Module *New = new Module(M->getModuleIdentifier(), M->getContext()); New->setDataLayout(M->getDataLayout()); New->setTargetTriple(M->getTargetTriple()); New->setModuleInlineAsm(M->getModuleInlineAsm()); // Loop over all of the global variables, making corresponding globals in the // new module. Here we add them to the VMap and to the new Module. We // don't worry about attributes or initializers, they will come later. // for (Module::const_global_iterator I = M->global_begin(), E = M->global_end(); I != E; ++I) { GlobalVariable *GV = new GlobalVariable(*New, I->getType()->getElementType(), I->isConstant(), I->getLinkage(), (Constant*) nullptr, I->getName(), (GlobalVariable*) nullptr, I->getThreadLocalMode(), I->getType()->getAddressSpace()); GV->copyAttributesFrom(I); VMap[I] = GV; } // Loop over the functions in the module, making external functions as before for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I) { Function *NF = Function::Create(cast<FunctionType>(I->getType()->getElementType()), I->getLinkage(), I->getName(), New); NF->copyAttributesFrom(I); VMap[I] = NF; } // Loop over the aliases in the module for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); I != E; ++I) { auto *PTy = cast<PointerType>(I->getType()); auto *GA = GlobalAlias::create(PTy->getElementType(), PTy->getAddressSpace(), I->getLinkage(), I->getName(), New); GA->copyAttributesFrom(I); VMap[I] = GA; } // Now that all of the things that global variable initializer can refer to // have been created, loop through and copy the global variable referrers // over... We also set the attributes on the global now. // for (Module::const_global_iterator I = M->global_begin(), E = M->global_end(); I != E; ++I) { GlobalVariable *GV = cast<GlobalVariable>(VMap[I]); if (I->hasInitializer()) GV->setInitializer(MapValue(I->getInitializer(), VMap)); } // Similarly, copy over function bodies now... // for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I) { Function *F = cast<Function>(VMap[I]); if (!I->isDeclaration()) { Function::arg_iterator DestI = F->arg_begin(); for (Function::const_arg_iterator J = I->arg_begin(); J != I->arg_end(); ++J) { DestI->setName(J->getName()); VMap[J] = DestI++; } SmallVector<ReturnInst*, 8> Returns; // Ignore returns cloned. CloneFunctionInto(F, I, VMap, /*ModuleLevelChanges=*/true, Returns); } } // And aliases for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); I != E; ++I) { GlobalAlias *GA = cast<GlobalAlias>(VMap[I]); if (const Constant *C = I->getAliasee()) GA->setAliasee(cast<GlobalObject>(MapValue(C, VMap))); } // And named metadata.... for (Module::const_named_metadata_iterator I = M->named_metadata_begin(), E = M->named_metadata_end(); I != E; ++I) { const NamedMDNode &NMD = *I; NamedMDNode *NewNMD = New->getOrInsertNamedMetadata(NMD.getName()); for (unsigned i = 0, e = NMD.getNumOperands(); i != e; ++i) NewNMD->addOperand(MapValue(NMD.getOperand(i), VMap)); } return New; }
/// ValueEnumerator - Enumerate module-level information. ValueEnumerator::ValueEnumerator(const Module *M) { // Enumerate the global variables. for (Module::const_global_iterator I = M->global_begin(), E = M->global_end(); I != E; ++I) EnumerateValue(I); // Enumerate the functions. for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I) { EnumerateValue(I); EnumerateAttributes(cast<Function>(I)->getAttributes()); } // Enumerate the aliases. for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); I != E; ++I) EnumerateValue(I); // Remember what is the cutoff between globalvalue's and other constants. unsigned FirstConstant = Values.size(); // Enumerate the global variable initializers. for (Module::const_global_iterator I = M->global_begin(), E = M->global_end(); I != E; ++I) if (I->hasInitializer()) EnumerateValue(I->getInitializer()); // Enumerate the aliasees. for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); I != E; ++I) EnumerateValue(I->getAliasee()); // Insert constants and metadata that are named at module level into the slot // pool so that the module symbol table can refer to them... EnumerateValueSymbolTable(M->getValueSymbolTable()); EnumerateNamedMetadata(M); SmallVector<std::pair<unsigned, MDNode*>, 8> MDs; // Enumerate types used by function bodies and argument lists. for (Module::const_iterator F = M->begin(), E = M->end(); F != E; ++F) { for (Function::const_arg_iterator I = F->arg_begin(), E = F->arg_end(); I != E; ++I) EnumerateType(I->getType()); for (Function::const_iterator BB = F->begin(), E = F->end(); BB != E; ++BB) for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E;++I){ for (User::const_op_iterator OI = I->op_begin(), E = I->op_end(); OI != E; ++OI) { if (MDNode *MD = dyn_cast<MDNode>(*OI)) if (MD->isFunctionLocal() && MD->getFunction()) // These will get enumerated during function-incorporation. continue; EnumerateOperandType(*OI); } EnumerateType(I->getType()); if (const CallInst *CI = dyn_cast<CallInst>(I)) EnumerateAttributes(CI->getAttributes()); else if (const InvokeInst *II = dyn_cast<InvokeInst>(I)) EnumerateAttributes(II->getAttributes()); // Enumerate metadata attached with this instruction. MDs.clear(); I->getAllMetadataOtherThanDebugLoc(MDs); for (unsigned i = 0, e = MDs.size(); i != e; ++i) EnumerateMetadata(MDs[i].second); if (!I->getDebugLoc().isUnknown()) { MDNode *Scope, *IA; I->getDebugLoc().getScopeAndInlinedAt(Scope, IA, I->getContext()); if (Scope) EnumerateMetadata(Scope); if (IA) EnumerateMetadata(IA); } } } // Optimize constant ordering. OptimizeConstants(FirstConstant, Values.size()); }
ValueEnumerator::ValueEnumerator(const Module &M, bool ShouldPreserveUseListOrder) : HasMDString(false), HasDILocation(false), HasGenericDINode(false), ShouldPreserveUseListOrder(ShouldPreserveUseListOrder) { if (ShouldPreserveUseListOrder) UseListOrders = predictUseListOrder(M); // Enumerate the global variables. for (Module::const_global_iterator I = M.global_begin(), E = M.global_end(); I != E; ++I) EnumerateValue(I); // Enumerate the functions. for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I) { EnumerateValue(I); EnumerateAttributes(cast<Function>(I)->getAttributes()); } // Enumerate the aliases. for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end(); I != E; ++I) EnumerateValue(I); // Remember what is the cutoff between globalvalue's and other constants. unsigned FirstConstant = Values.size(); // Enumerate the global variable initializers. for (Module::const_global_iterator I = M.global_begin(), E = M.global_end(); I != E; ++I) if (I->hasInitializer()) EnumerateValue(I->getInitializer()); // Enumerate the aliasees. for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end(); I != E; ++I) EnumerateValue(I->getAliasee()); // Enumerate the prefix data constants. for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I) if (I->hasPrefixData()) EnumerateValue(I->getPrefixData()); // Enumerate the prologue data constants. for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I) if (I->hasPrologueData()) EnumerateValue(I->getPrologueData()); // Enumerate the metadata type. // // TODO: Move this to ValueEnumerator::EnumerateOperandType() once bitcode // only encodes the metadata type when it's used as a value. EnumerateType(Type::getMetadataTy(M.getContext())); // Insert constants and metadata that are named at module level into the slot // pool so that the module symbol table can refer to them... EnumerateValueSymbolTable(M.getValueSymbolTable()); EnumerateNamedMetadata(M); SmallVector<std::pair<unsigned, MDNode *>, 8> MDs; // Enumerate types used by function bodies and argument lists. for (const Function &F : M) { for (const Argument &A : F.args()) EnumerateType(A.getType()); // Enumerate metadata attached to this function. F.getAllMetadata(MDs); for (const auto &I : MDs) EnumerateMetadata(I.second); for (const BasicBlock &BB : F) for (const Instruction &I : BB) { for (const Use &Op : I.operands()) { auto *MD = dyn_cast<MetadataAsValue>(&Op); if (!MD) { EnumerateOperandType(Op); continue; } // Local metadata is enumerated during function-incorporation. if (isa<LocalAsMetadata>(MD->getMetadata())) continue; EnumerateMetadata(MD->getMetadata()); } EnumerateType(I.getType()); if (const CallInst *CI = dyn_cast<CallInst>(&I)) EnumerateAttributes(CI->getAttributes()); else if (const InvokeInst *II = dyn_cast<InvokeInst>(&I)) EnumerateAttributes(II->getAttributes()); // Enumerate metadata attached with this instruction. MDs.clear(); I.getAllMetadataOtherThanDebugLoc(MDs); for (unsigned i = 0, e = MDs.size(); i != e; ++i) EnumerateMetadata(MDs[i].second); // Don't enumerate the location directly -- it has a special record // type -- but enumerate its operands. if (DILocation *L = I.getDebugLoc()) EnumerateMDNodeOperands(L); } } // Optimize constant ordering. OptimizeConstants(FirstConstant, Values.size()); }
/// NaClValueEnumerator - Enumerate module-level information. NaClValueEnumerator::NaClValueEnumerator(const Module *M) { // Create map for counting frequency of types, and set field // TypeCountMap accordingly. Note: Pointer field TypeCountMap is // used to deal with the fact that types are added through various // method calls in this routine. Rather than pass it as an argument, // we use a field. The field is a pointer so that the memory // footprint of count_map can be garbage collected when this // constructor completes. TypeCountMapType count_map; TypeCountMap = &count_map; // Enumerate the global variables. for (Module::const_global_iterator I = M->global_begin(), E = M->global_end(); I != E; ++I) EnumerateValue(I); // Enumerate the functions. for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I) { EnumerateValue(I); EnumerateAttributes(cast<Function>(I)->getAttributes()); } // Enumerate the aliases. for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); I != E; ++I) EnumerateValue(I); // Remember what is the cutoff between globalvalue's and other constants. unsigned FirstConstant = Values.size(); // Enumerate the global variable initializers. for (Module::const_global_iterator I = M->global_begin(), E = M->global_end(); I != E; ++I) if (I->hasInitializer()) EnumerateValue(I->getInitializer()); // Enumerate the aliasees. for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); I != E; ++I) EnumerateValue(I->getAliasee()); // Insert constants and metadata that are named at module level into the slot // pool so that the module symbol table can refer to them... EnumerateValueSymbolTable(M->getValueSymbolTable()); EnumerateNamedMetadata(M); SmallVector<std::pair<unsigned, MDNode*>, 8> MDs; // Enumerate types used by function bodies and argument lists. for (Module::const_iterator F = M->begin(), E = M->end(); F != E; ++F) { for (Function::const_arg_iterator I = F->arg_begin(), E = F->arg_end(); I != E; ++I) EnumerateType(I->getType()); for (Function::const_iterator BB = F->begin(), E = F->end(); BB != E; ++BB) for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E;++I){ for (User::const_op_iterator OI = I->op_begin(), E = I->op_end(); OI != E; ++OI) { if (MDNode *MD = dyn_cast<MDNode>(*OI)) if (MD->isFunctionLocal() && MD->getFunction()) // These will get enumerated during function-incorporation. continue; EnumerateOperandType(*OI); } EnumerateType(I->getType()); if (const CallInst *CI = dyn_cast<CallInst>(I)) EnumerateAttributes(CI->getAttributes()); else if (const InvokeInst *II = dyn_cast<InvokeInst>(I)) EnumerateAttributes(II->getAttributes()); // Enumerate metadata attached with this instruction. MDs.clear(); I->getAllMetadataOtherThanDebugLoc(MDs); for (unsigned i = 0, e = MDs.size(); i != e; ++i) EnumerateMetadata(MDs[i].second); if (!I->getDebugLoc().isUnknown()) { MDNode *Scope, *IA; I->getDebugLoc().getScopeAndInlinedAt(Scope, IA, I->getContext()); if (Scope) EnumerateMetadata(Scope); if (IA) EnumerateMetadata(IA); } } } // Optimized type indicies to put "common" expected types in with small // indices. OptimizeTypes(M); TypeCountMap = NULL; // Optimize constant ordering. OptimizeConstants(FirstConstant, Values.size()); }
std::unique_ptr<Module> llvm::CloneSubModule(const Module &M, HandleGlobalVariableFtor HandleGlobalVariable, HandleFunctionFtor HandleFunction, bool KeepInlineAsm) { ValueToValueMapTy VMap; // First off, we need to create the new module. std::unique_ptr<Module> New = llvm::make_unique<Module>(M.getModuleIdentifier(), M.getContext()); New->setDataLayout(M.getDataLayout()); New->setTargetTriple(M.getTargetTriple()); if (KeepInlineAsm) New->setModuleInlineAsm(M.getModuleInlineAsm()); // Copy global variables (but not initializers, yet). for (Module::const_global_iterator I = M.global_begin(), E = M.global_end(); I != E; ++I) { GlobalVariable *GV = new GlobalVariable( *New, I->getType()->getElementType(), I->isConstant(), I->getLinkage(), (Constant *)nullptr, I->getName(), (GlobalVariable *)nullptr, I->getThreadLocalMode(), I->getType()->getAddressSpace()); GV->copyAttributesFrom(I); VMap[I] = GV; } // Loop over the functions in the module, making external functions as before for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I) { Function *NF = Function::Create(cast<FunctionType>(I->getType()->getElementType()), I->getLinkage(), I->getName(), &*New); NF->copyAttributesFrom(I); VMap[I] = NF; } // Loop over the aliases in the module for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end(); I != E; ++I) { auto *PTy = cast<PointerType>(I->getType()); auto *GA = GlobalAlias::create(PTy->getElementType(), PTy->getAddressSpace(), I->getLinkage(), I->getName(), &*New); GA->copyAttributesFrom(I); VMap[I] = GA; } // Now that all of the things that global variable initializer can refer to // have been created, loop through and copy the global variable referrers // over... We also set the attributes on the global now. for (Module::const_global_iterator I = M.global_begin(), E = M.global_end(); I != E; ++I) { GlobalVariable &GV = *cast<GlobalVariable>(VMap[I]); HandleGlobalVariable(GV, *I, VMap); } // Similarly, copy over function bodies now... // for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I) { Function &F = *cast<Function>(VMap[I]); HandleFunction(F, *I, VMap); } // And aliases for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end(); I != E; ++I) { GlobalAlias *GA = cast<GlobalAlias>(VMap[I]); if (const Constant *C = I->getAliasee()) GA->setAliasee(MapValue(C, VMap)); } // And named metadata.... for (Module::const_named_metadata_iterator I = M.named_metadata_begin(), E = M.named_metadata_end(); I != E; ++I) { const NamedMDNode &NMD = *I; NamedMDNode *NewNMD = New->getOrInsertNamedMetadata(NMD.getName()); for (unsigned i = 0, e = NMD.getNumOperands(); i != e; ++i) NewNMD->addOperand(MapMetadata(NMD.getOperand(i), VMap)); } return New; }
Module *llvm::CloneModule(const Module *M, DenseMap<const Value*, Value*> &ValueMap) { // First off, we need to create the new module... Module *New = new Module(M->getModuleIdentifier()); New->setDataLayout(M->getDataLayout()); New->setTargetTriple(M->getTargetTriple()); New->setModuleInlineAsm(M->getModuleInlineAsm()); // Copy all of the type symbol table entries over. const TypeSymbolTable &TST = M->getTypeSymbolTable(); for (TypeSymbolTable::const_iterator TI = TST.begin(), TE = TST.end(); TI != TE; ++TI) New->addTypeName(TI->first, TI->second); // Copy all of the dependent libraries over. for (Module::lib_iterator I = M->lib_begin(), E = M->lib_end(); I != E; ++I) New->addLibrary(*I); // Loop over all of the global variables, making corresponding globals in the // new module. Here we add them to the ValueMap and to the new Module. We // don't worry about attributes or initializers, they will come later. // for (Module::const_global_iterator I = M->global_begin(), E = M->global_end(); I != E; ++I) { GlobalVariable *GV = new GlobalVariable(I->getType()->getElementType(), false, GlobalValue::ExternalLinkage, 0, I->getName(), New); GV->setAlignment(I->getAlignment()); ValueMap[I] = GV; } // Loop over the functions in the module, making external functions as before for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I) { Function *NF = Function::Create(cast<FunctionType>(I->getType()->getElementType()), GlobalValue::ExternalLinkage, I->getName(), New); NF->copyAttributesFrom(I); ValueMap[I] = NF; } // Loop over the aliases in the module for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); I != E; ++I) ValueMap[I] = new GlobalAlias(I->getType(), GlobalAlias::ExternalLinkage, I->getName(), NULL, New); // Now that all of the things that global variable initializer can refer to // have been created, loop through and copy the global variable referrers // over... We also set the attributes on the global now. // for (Module::const_global_iterator I = M->global_begin(), E = M->global_end(); I != E; ++I) { GlobalVariable *GV = cast<GlobalVariable>(ValueMap[I]); if (I->hasInitializer()) GV->setInitializer(cast<Constant>(MapValue(I->getInitializer(), ValueMap))); GV->setLinkage(I->getLinkage()); GV->setThreadLocal(I->isThreadLocal()); GV->setConstant(I->isConstant()); } // Similarly, copy over function bodies now... // for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I) { Function *F = cast<Function>(ValueMap[I]); if (!I->isDeclaration()) { Function::arg_iterator DestI = F->arg_begin(); for (Function::const_arg_iterator J = I->arg_begin(); J != I->arg_end(); ++J) { DestI->setName(J->getName()); ValueMap[J] = DestI++; } std::vector<ReturnInst*> Returns; // Ignore returns cloned... CloneFunctionInto(F, I, ValueMap, Returns); } F->setLinkage(I->getLinkage()); } // And aliases for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); I != E; ++I) { GlobalAlias *GA = cast<GlobalAlias>(ValueMap[I]); GA->setLinkage(I->getLinkage()); if (const Constant* C = I->getAliasee()) GA->setAliasee(cast<Constant>(MapValue(C, ValueMap))); } return New; }
/// ValueEnumerator - Enumerate module-level information. ValueEnumerator::ValueEnumerator(const Module *M) { InstructionCount = 0; // Enumerate the global variables. for (Module::const_global_iterator I = M->global_begin(), E = M->global_end(); I != E; ++I) EnumerateValue(I); // Enumerate the functions. for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I) { EnumerateValue(I); EnumerateAttributes(cast<Function>(I)->getAttributes()); } // Enumerate the aliases. for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); I != E; ++I) EnumerateValue(I); // Remember what is the cutoff between globalvalue's and other constants. unsigned FirstConstant = Values.size(); // Enumerate the global variable initializers. for (Module::const_global_iterator I = M->global_begin(), E = M->global_end(); I != E; ++I) if (I->hasInitializer()) EnumerateValue(I->getInitializer()); // Enumerate the aliasees. for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); I != E; ++I) EnumerateValue(I->getAliasee()); // Enumerate types used by the type symbol table. EnumerateTypeSymbolTable(M->getTypeSymbolTable()); // Insert constants that are named at module level into the slot pool so that // the module symbol table can refer to them... EnumerateValueSymbolTable(M->getValueSymbolTable()); // Enumerate types used by function bodies and argument lists. for (Module::const_iterator F = M->begin(), E = M->end(); F != E; ++F) { for (Function::const_arg_iterator I = F->arg_begin(), E = F->arg_end(); I != E; ++I) EnumerateType(I->getType()); MetadataContext &TheMetadata = F->getContext().getMetadata(); typedef SmallVector<std::pair<unsigned, TrackingVH<MDNode> >, 2> MDMapTy; MDMapTy MDs; for (Function::const_iterator BB = F->begin(), E = F->end(); BB != E; ++BB) for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E;++I){ for (User::const_op_iterator OI = I->op_begin(), E = I->op_end(); OI != E; ++OI) EnumerateOperandType(*OI); EnumerateType(I->getType()); if (const CallInst *CI = dyn_cast<CallInst>(I)) EnumerateAttributes(CI->getAttributes()); else if (const InvokeInst *II = dyn_cast<InvokeInst>(I)) EnumerateAttributes(II->getAttributes()); // Enumerate metadata attached with this instruction. MDs.clear(); TheMetadata.getMDs(I, MDs); for (MDMapTy::const_iterator MI = MDs.begin(), ME = MDs.end(); MI != ME; ++MI) EnumerateMetadata(MI->second); } } // Optimize constant ordering. OptimizeConstants(FirstConstant, Values.size()); // Sort the type table by frequency so that most commonly used types are early // in the table (have low bit-width). std::stable_sort(Types.begin(), Types.end(), CompareByFrequency); // Partition the Type ID's so that the single-value types occur before the // aggregate types. This allows the aggregate types to be dropped from the // type table after parsing the global variable initializers. std::partition(Types.begin(), Types.end(), isSingleValueType); // Now that we rearranged the type table, rebuild TypeMap. for (unsigned i = 0, e = Types.size(); i != e; ++i) TypeMap[Types[i].first] = i+1; }
Module *llvm::CloneModule(const Module *M, ValueToValueMapTy &VMap) { // First off, we need to create the new module... Module *New = new Module(M->getModuleIdentifier(), M->getContext()); New->setDataLayout(M->getDataLayout()); New->setTargetTriple(M->getTargetTriple()); New->setModuleInlineAsm(M->getModuleInlineAsm()); // Copy all of the type symbol table entries over. const TypeSymbolTable &TST = M->getTypeSymbolTable(); for (TypeSymbolTable::const_iterator TI = TST.begin(), TE = TST.end(); TI != TE; ++TI) New->addTypeName(TI->first, TI->second); // Copy all of the dependent libraries over. for (Module::lib_iterator I = M->lib_begin(), E = M->lib_end(); I != E; ++I) New->addLibrary(*I); // Loop over all of the global variables, making corresponding globals in the // new module. Here we add them to the VMap and to the new Module. We // don't worry about attributes or initializers, they will come later. // for (Module::const_global_iterator I = M->global_begin(), E = M->global_end(); I != E; ++I) { GlobalVariable *GV = new GlobalVariable(*New, I->getType()->getElementType(), false, GlobalValue::ExternalLinkage, 0, I->getName()); GV->setAlignment(I->getAlignment()); VMap[I] = GV; } // Loop over the functions in the module, making external functions as before for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I) { Function *NF = Function::Create(cast<FunctionType>(I->getType()->getElementType()), GlobalValue::ExternalLinkage, I->getName(), New); NF->copyAttributesFrom(I); VMap[I] = NF; } // Loop over the aliases in the module for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); I != E; ++I) VMap[I] = new GlobalAlias(I->getType(), GlobalAlias::ExternalLinkage, I->getName(), NULL, New); // Now that all of the things that global variable initializer can refer to // have been created, loop through and copy the global variable referrers // over... We also set the attributes on the global now. // for (Module::const_global_iterator I = M->global_begin(), E = M->global_end(); I != E; ++I) { GlobalVariable *GV = cast<GlobalVariable>(VMap[I]); if (I->hasInitializer()) GV->setInitializer(cast<Constant>(MapValue(I->getInitializer(), VMap))); GV->setLinkage(I->getLinkage()); GV->setThreadLocal(I->isThreadLocal()); GV->setConstant(I->isConstant()); } // Similarly, copy over function bodies now... // for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I) { Function *F = cast<Function>(VMap[I]); if (!I->isDeclaration()) { Function::arg_iterator DestI = F->arg_begin(); for (Function::const_arg_iterator J = I->arg_begin(); J != I->arg_end(); ++J) { DestI->setName(J->getName()); VMap[J] = DestI++; } SmallVector<ReturnInst*, 8> Returns; // Ignore returns cloned. CloneFunctionInto(F, I, VMap, Returns); } F->setLinkage(I->getLinkage()); } // And aliases for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); I != E; ++I) { GlobalAlias *GA = cast<GlobalAlias>(VMap[I]); GA->setLinkage(I->getLinkage()); if (const Constant* C = I->getAliasee()) GA->setAliasee(cast<Constant>(MapValue(C, VMap))); } // And named metadata.... for (Module::const_named_metadata_iterator I = M->named_metadata_begin(), E = M->named_metadata_end(); I != E; ++I) { const NamedMDNode &NMD = *I; SmallVector<MDNode*, 4> MDs; for (unsigned i = 0, e = NMD.getNumOperands(); i != e; ++i) MDs.push_back(cast<MDNode>(MapValue(NMD.getOperand(i), VMap))); NamedMDNode::Create(New->getContext(), NMD.getName(), MDs.data(), MDs.size(), New); } // Update metadata attach with instructions. for (Module::iterator MI = New->begin(), ME = New->end(); MI != ME; ++MI) for (Function::iterator FI = MI->begin(), FE = MI->end(); FI != FE; ++FI) for (BasicBlock::iterator BI = FI->begin(), BE = FI->end(); BI != BE; ++BI) { SmallVector<std::pair<unsigned, MDNode *>, 4 > MDs; BI->getAllMetadata(MDs); for (SmallVector<std::pair<unsigned, MDNode *>, 4>::iterator MDI = MDs.begin(), MDE = MDs.end(); MDI != MDE; ++MDI) { Value *MappedValue = MapValue(MDI->second, VMap); if (MDI->second != MappedValue && MappedValue) BI->setMetadata(MDI->first, cast<MDNode>(MappedValue)); } } return New; }
/// ValueEnumerator - Enumerate module-level information. ValueEnumerator::ValueEnumerator(const Module *M) { // Enumerate the global variables. for (Module::const_global_iterator I = M->global_begin(), E = M->global_end(); I != E; ++I) EnumerateValue(I); // Enumerate the functions. for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I) { EnumerateValue(I); EnumerateParamAttrs(cast<Function>(I)->getParamAttrs()); } // Enumerate the aliases. for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); I != E; ++I) EnumerateValue(I); // Remember what is the cutoff between globalvalue's and other constants. unsigned FirstConstant = Values.size(); // Enumerate the global variable initializers. for (Module::const_global_iterator I = M->global_begin(), E = M->global_end(); I != E; ++I) if (I->hasInitializer()) EnumerateValue(I->getInitializer()); // Enumerate the aliasees. for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); I != E; ++I) EnumerateValue(I->getAliasee()); // Enumerate types used by the type symbol table. EnumerateTypeSymbolTable(M->getTypeSymbolTable()); // Insert constants that are named at module level into the slot pool so that // the module symbol table can refer to them... EnumerateValueSymbolTable(M->getValueSymbolTable()); // Enumerate types used by function bodies and argument lists. for (Module::const_iterator F = M->begin(), E = M->end(); F != E; ++F) { for (Function::const_arg_iterator I = F->arg_begin(), E = F->arg_end(); I != E; ++I) EnumerateType(I->getType()); for (Function::const_iterator BB = F->begin(), E = F->end(); BB != E; ++BB) for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E;++I){ for (User::const_op_iterator OI = I->op_begin(), E = I->op_end(); OI != E; ++OI) EnumerateOperandType(*OI); EnumerateType(I->getType()); if (const CallInst *CI = dyn_cast<CallInst>(I)) EnumerateParamAttrs(CI->getParamAttrs()); else if (const InvokeInst *II = dyn_cast<InvokeInst>(I)) EnumerateParamAttrs(II->getParamAttrs()); } } // Optimize constant ordering. OptimizeConstants(FirstConstant, Values.size()); // Sort the type table by frequency so that most commonly used types are early // in the table (have low bit-width). std::stable_sort(Types.begin(), Types.end(), CompareByFrequency); // Partition the Type ID's so that the first-class types occur before the // aggregate types. This allows the aggregate types to be dropped from the // type table after parsing the global variable initializers. std::partition(Types.begin(), Types.end(), isFirstClassType); // Now that we rearranged the type table, rebuild TypeMap. for (unsigned i = 0, e = Types.size(); i != e; ++i) TypeMap[Types[i].first] = i+1; }
/// ValueEnumerator - Enumerate module-level information. ValueEnumerator::ValueEnumerator(const Module *M) { // Enumerate the global variables. for (Module::const_global_iterator I = M->global_begin(), E = M->global_end(); I != E; ++I) EnumerateValue(I); // Enumerate the functions. for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I) { EnumerateValue(I); EnumerateAttributes(cast<Function>(I)->getAttributes()); } // Enumerate the aliases. for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); I != E; ++I) EnumerateValue(I); // Remember what is the cutoff between globalvalue's and other constants. unsigned FirstConstant = Values.size(); // Enumerate the global variable initializers. for (Module::const_global_iterator I = M->global_begin(), E = M->global_end(); I != E; ++I) if (I->hasInitializer()) EnumerateValue(I->getInitializer()); // Enumerate the aliasees. for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); I != E; ++I) EnumerateValue(I->getAliasee()); // Enumerate types used by the type symbol table. EnumerateTypeSymbolTable(M->getTypeSymbolTable()); // Insert constants and metadata that are named at module level into the slot // pool so that the module symbol table can refer to them... EnumerateValueSymbolTable(M->getValueSymbolTable()); EnumerateNamedMetadata(M); SmallVector<std::pair<unsigned, MDNode*>, 8> MDs; // Enumerate types used by function bodies and argument lists. for (Module::const_iterator F = M->begin(), E = M->end(); F != E; ++F) { for (Function::const_arg_iterator I = F->arg_begin(), E = F->arg_end(); I != E; ++I) EnumerateType(I->getType()); for (Function::const_iterator BB = F->begin(), E = F->end(); BB != E; ++BB) for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E;++I){ for (User::const_op_iterator OI = I->op_begin(), E = I->op_end(); OI != E; ++OI) { if (MDNode *MD = dyn_cast<MDNode>(*OI)) if (MD->isFunctionLocal() && MD->getFunction()) // These will get enumerated during function-incorporation. continue; EnumerateOperandType(*OI); } EnumerateType(I->getType()); if (const CallInst *CI = dyn_cast<CallInst>(I)) EnumerateAttributes(CI->getAttributes()); else if (const InvokeInst *II = dyn_cast<InvokeInst>(I)) EnumerateAttributes(II->getAttributes()); // Enumerate metadata attached with this instruction. MDs.clear(); I->getAllMetadataOtherThanDebugLoc(MDs); for (unsigned i = 0, e = MDs.size(); i != e; ++i) EnumerateMetadata(MDs[i].second); if (!I->getDebugLoc().isUnknown()) { MDNode *Scope, *IA; I->getDebugLoc().getScopeAndInlinedAt(Scope, IA, I->getContext()); if (Scope) EnumerateMetadata(Scope); if (IA) EnumerateMetadata(IA); } } } // Optimize constant ordering. OptimizeConstants(FirstConstant, Values.size()); // Sort the type table by frequency so that most commonly used types are early // in the table (have low bit-width). std::stable_sort(Types.begin(), Types.end(), CompareByFrequency); // Partition the Type ID's so that the single-value types occur before the // aggregate types. This allows the aggregate types to be dropped from the // type table after parsing the global variable initializers. std::partition(Types.begin(), Types.end(), isSingleValueType); // Now that we rearranged the type table, rebuild TypeMap. for (unsigned i = 0, e = Types.size(); i != e; ++i) TypeMap[Types[i].first] = i+1; }