- // MIR for `array_bound_mut` before GVN
+ // MIR for `array_bound_mut` after GVN
  
  fn array_bound_mut(_1: usize, _2: &mut [u8; N]) -> u8 {
      debug index => _1;
      debug slice => _2;
      let mut _0: u8;
      let mut _3: bool;
      let mut _4: usize;
      let mut _5: usize;
      let mut _6: &[u8];
      let mut _7: &[u8; N];
      let _8: usize;
      let mut _9: usize;
      let mut _10: bool;
      let _11: usize;
      let mut _12: usize;
      let mut _13: bool;
  
      bb0: {
-         StorageLive(_3);
+         nop;
          StorageLive(_4);
          _4 = copy _1;
-         StorageLive(_5);
+         nop;
          StorageLive(_6);
          StorageLive(_7);
          _7 = &(*_2);
          _6 = move _7 as &[u8] (PointerCoercion(Unsize, Implicit));
          StorageDead(_7);
-         _5 = PtrMetadata(move _6);
+         _5 = const N;
          goto -> bb1;
      }
  
      bb1: {
          StorageDead(_6);
-         _3 = Lt(move _4, move _5);
-         switchInt(move _3) -> [0: bb4, otherwise: bb2];
+         _3 = Lt(copy _1, const N);
+         switchInt(copy _3) -> [0: bb4, otherwise: bb2];
      }
  
      bb2: {
-         StorageDead(_5);
+         nop;
          StorageDead(_4);
          StorageLive(_8);
          _8 = copy _1;
-         _9 = Len((*_2));
-         _10 = Lt(copy _8, copy _9);
-         assert(move _10, "index out of bounds: the length is {} but the index is {}", move _9, copy _8) -> [success: bb3, unwind continue];
+         _9 = const N;
+         _10 = copy _3;
+         assert(copy _3, "index out of bounds: the length is {} but the index is {}", const N, copy _1) -> [success: bb3, unwind continue];
      }
  
      bb3: {
-         _0 = copy (*_2)[_8];
+         _0 = copy (*_2)[_1];
          StorageDead(_8);
          goto -> bb6;
      }
  
      bb4: {
-         StorageDead(_5);
+         nop;
          StorageDead(_4);
          StorageLive(_11);
          _11 = const 0_usize;
-         _12 = Len((*_2));
-         _13 = Lt(copy _11, copy _12);
-         assert(move _13, "index out of bounds: the length is {} but the index is {}", move _12, copy _11) -> [success: bb5, unwind continue];
+         _12 = const N;
+         _13 = Lt(const 0_usize, const N);
+         assert(move _13, "index out of bounds: the length is {} but the index is {}", const N, const 0_usize) -> [success: bb5, unwind continue];
      }
  
      bb5: {
-         (*_2)[_11] = const 42_u8;
+         (*_2)[0 of 1] = const 42_u8;
          StorageDead(_11);
          _0 = const 42_u8;
          goto -> bb6;
      }
  
      bb6: {
-         StorageDead(_3);
+         nop;
          return;
      }
  }