in lib/BPFCov.cpp [83:95]
bool deleteFuncByName(Module &M, StringRef Name)
{
auto F = M.getFunction(Name);
if (!F)
{
return false;
}
errs() << "erasing " << Name << "()\n";
F->replaceAllUsesWith(UndefValue::get(F->getType()));
F->eraseFromParent();
return true;
}