title: Does the Rust compiler have a profiling option?
body: <p>I have a Rust program that isn't running as fast as I think it should. Is there a way to tell the compiler to instrument the binary to generate profiling information?</p>
  
  <p>I mean something like GCC's <code>-p</code> and <code>-pg</code> options or GHC's <code>-prof</code>.</p>