- // MIR for `main` before ConstProp
+ // MIR for `main` after ConstProp
  
  fn main() -> () {
      let mut _0: ();                      // return place in scope 0 at $DIR/mutable_variable_aggregate_partial_read.rs:+0:11: +0:11
      let mut _1: (i32, i32);              // in scope 0 at $DIR/mutable_variable_aggregate_partial_read.rs:+1:9: +1:14
      scope 1 {
          debug x => _1;                   // in scope 1 at $DIR/mutable_variable_aggregate_partial_read.rs:+1:9: +1:14
          let _2: i32;                     // in scope 1 at $DIR/mutable_variable_aggregate_partial_read.rs:+4:9: +4:10
          scope 2 {
              debug y => _2;               // in scope 2 at $DIR/mutable_variable_aggregate_partial_read.rs:+4:9: +4:10
          }
      }
  
      bb0: {
          StorageLive(_1);                 // scope 0 at $DIR/mutable_variable_aggregate_partial_read.rs:+1:9: +1:14
          _1 = foo() -> bb1;               // scope 0 at $DIR/mutable_variable_aggregate_partial_read.rs:+1:29: +1:34
                                           // mir::Constant
                                           // + span: $DIR/mutable_variable_aggregate_partial_read.rs:6:29: 6:32
                                           // + literal: Const { ty: fn() -> (i32, i32) {foo}, val: Value(<ZST>) }
      }
  
      bb1: {
          (_1.1: i32) = const 99_i32;      // scope 1 at $DIR/mutable_variable_aggregate_partial_read.rs:+2:5: +2:13
          (_1.0: i32) = const 42_i32;      // scope 1 at $DIR/mutable_variable_aggregate_partial_read.rs:+3:5: +3:13
          StorageLive(_2);                 // scope 1 at $DIR/mutable_variable_aggregate_partial_read.rs:+4:9: +4:10
-         _2 = (_1.1: i32);                // scope 1 at $DIR/mutable_variable_aggregate_partial_read.rs:+4:13: +4:16
+         _2 = const 99_i32;               // scope 1 at $DIR/mutable_variable_aggregate_partial_read.rs:+4:13: +4:16
          StorageDead(_2);                 // scope 1 at $DIR/mutable_variable_aggregate_partial_read.rs:+5:1: +5:2
          StorageDead(_1);                 // scope 0 at $DIR/mutable_variable_aggregate_partial_read.rs:+5:1: +5:2
          return;                          // scope 0 at $DIR/mutable_variable_aggregate_partial_read.rs:+5:2: +5:2
      }
  }