400   void replaceBy(Function *G) const {  in replaceBy()
401     assert(!(*this < FunctionNode(G)) && !(FunctionNode(G) < *this) &&  in replaceBy()
404     F = G;  in replaceBy()
1123   void mergeTwoFunctions(Function *F, Function *G);
1126   void writeThunkOrAlias(Function *F, Function *G);
1130   void writeThunk(Function *F, Function *G);
1133   void writeAlias(Function *F, Function *G);
1136   void replaceFunctionInTree(FnTreeType::iterator &IterToF, Function *G);
1292 void MergeFunctions::writeThunkOrAlias(Function *F, Function *G) {  in writeThunkOrAlias()  argument
1293   if (HasGlobalAliases && G->hasUnnamedAddr()) {  in writeThunkOrAlias()
1294     if (G->hasExternalLinkage() || G->hasLocalLinkage() ||  in writeThunkOrAlias()
1295         G->hasWeakLinkage()) {  in writeThunkOrAlias()
1296       writeAlias(F, G);  in writeThunkOrAlias()
1301   writeThunk(F, G);  in writeThunkOrAlias()
1334 void MergeFunctions::writeThunk(Function *F, Function *G) {  in writeThunk()  argument
1335   if (!G->mayBeOverridden()) {  in writeThunk()
1337     replaceDirectCallers(G, F);  in writeThunk()
1342   if (G->hasLocalLinkage() && G->use_empty()) {  in writeThunk()
1343     G->eraseFromParent();  in writeThunk()
1347   Function *NewG = Function::Create(G->getFunctionType(), G->getLinkage(), "",  in writeThunk()
1348                                     G->getParent());  in writeThunk()
1370   NewG->copyAttributesFrom(G);  in writeThunk()
1371   NewG->takeName(G);  in writeThunk()
1372   removeUsers(G);  in writeThunk()
1373   G->replaceAllUsesWith(NewG);  in writeThunk()
1374   G->eraseFromParent();  in writeThunk()
1381 void MergeFunctions::writeAlias(Function *F, Function *G) {  in writeAlias()  argument
1382   PointerType *PTy = G->getType();  in writeAlias()
1383   auto *GA = GlobalAlias::create(PTy, G->getLinkage(), "", F);  in writeAlias()
1384   F->setAlignment(std::max(F->getAlignment(), G->getAlignment()));  in writeAlias()
1385   GA->takeName(G);  in writeAlias()
1386   GA->setVisibility(G->getVisibility());  in writeAlias()
1387   removeUsers(G);  in writeAlias()
1388   G->replaceAllUsesWith(GA);  in writeAlias()
1389   G->eraseFromParent();  in writeAlias()
1396 void MergeFunctions::mergeTwoFunctions(Function *F, Function *G) {  in mergeTwoFunctions()  argument
1398     assert(G->mayBeOverridden());  in mergeTwoFunctions()
1408     unsigned MaxAlignment = std::max(G->getAlignment(), H->getAlignment());  in mergeTwoFunctions()
1411       writeAlias(F, G);  in mergeTwoFunctions()
1414       writeThunk(F, G);  in mergeTwoFunctions()
1422     writeThunkOrAlias(F, G);  in mergeTwoFunctions()
1430                                            Function *G) {  in replaceFunctionInTree()  argument
1435   assert(((F->mayBeOverridden() && G->mayBeOverridden()) ||  in replaceFunctionInTree()
1436           (!F->mayBeOverridden() && !G->mayBeOverridden())) &&  in replaceFunctionInTree()
1440   IterToF->replaceBy(G);  in replaceFunctionInTree()