llvm/llvm/test/tools/llvm-opt-report/Inputs/q2.c

void bar();
void foo(int n) {
  for (int i = 0; i < n; ++i) for (int j = 0; j < n; ++j)
    bar();
}

void quack() {
  foo(4);
}

void quack2() {
  foo(4);
}