- // MIR for `main` before GVN
+ // MIR for `main` after GVN
  
  fn main() -> () {
      let mut _0: ();
      let mut _1: *const fn();
      let mut _2: usize;
      let mut _3: fn();
      scope 1 {
      }
  
      bb0: {
          StorageLive(_1);
          StorageLive(_2);
          StorageLive(_3);
          _3 = main as fn() (PointerCoercion(ReifyFnPointer, AsCast));
          _2 = move _3 as usize (PointerExposeProvenance);
          StorageDead(_3);
          _1 = move _2 as *const fn() (PointerWithExposedProvenance);
          StorageDead(_2);
          StorageDead(_1);
          _0 = const ();
          return;
      }
  }