How does the linker handle identical template instantiations across translation units?

Suppose I have two translation-units:

foo.cpp

void foo() {
  auto v = std::vector<int>();
}

bar.cpp

void bar() {
  auto v = std::vector<int>();
}

When I compile these translation-units, each will instantiate std::vector<int>.

My question is: how does this work at the linking stage?

• Do both instantiations have different mangled names?
• Does the linker remove them as duplicates?