- // MIR for `main` before ConstProp
+ // MIR for `main` after ConstProp
  
  fn main() -> () {
      let mut _0: ();
      let _1: u32;
      let mut _2: &[u32];
      let mut _3: &[u32; 3];
      let _4: &[u32; 3];
      let _5: [u32; 3];
      let _6: usize;
      let mut _7: usize;
      let mut _8: bool;
      let mut _9: &[u32; 3];
  
      bb0: {
          StorageLive(_1);
          StorageLive(_2);
          StorageLive(_3);
          StorageLive(_4);
          _9 = const _;
          _4 = _9;
          _3 = _4;
          _2 = move _3 as &[u32] (Pointer(Unsize));
          StorageDead(_3);
          StorageLive(_6);
          _6 = const 1_usize;
-         _7 = Len((*_2));
-         _8 = Lt(_6, _7);
-         assert(move _8, "index out of bounds: the length is {} but the index is {}", move _7, _6) -> bb1;
+         _7 = const 3_usize;
+         _8 = const true;
+         assert(const true, "index out of bounds: the length is {} but the index is {}", move _7, _6) -> bb1;
      }
  
      bb1: {
-         _1 = (*_2)[_6];
+         _1 = const 2_u32;
          StorageDead(_6);
          StorageDead(_4);
          StorageDead(_2);
          StorageDead(_1);
          _0 = const ();
          return;
      }
  }