bool LLPE::runOnModule(Module &M) {
vector<int> argv = readInputFile();
for (Module::iterator F = M.begin(), F_end = M.end(); F != F_end; ++F) {
for (Function::arg_iterator A = F->arg_begin(), A_end = F->arg_end(); A != A_end; ++A) {
//Search for variables referencing argv
if (A->getName() == "argv") {
//Iterate through uses of argv
for (User::user_iterator U = A->user_begin(), U_end = A->user_end(); U != U_end; ++U) {
Instruction *User = dyn_cast<Instruction>(*U);
StoreInst *SI = dyn_cast<StoreInst>(User);
AllocaInst *OrigAlloca = dyn_cast<AllocaInst>(SI->getOperand(1));
for (User::user_iterator U2 = OrigAlloca->user_begin(), U2_end = OrigAlloca->user_end(); U2 != U2_end; ++U2) {
Instruction *User2 = dyn_cast<Instruction>(*U2);
for (User::user_iterator U3 = User2->user_begin(), U3_end = OrigAlloca->user_end(); U3 != U3_end; ++U3) {
searchForStoreInstruction(dyn_cast<Instruction>(*U3)->getParent(), argv);
}
}
}
}
}
}
return true;
}
