- // 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:4:11: 4:11
      let mut _1: (i32, i32);              // in scope 0 at $DIR/mutable_variable_aggregate_partial_read.rs:5:9: 5:14
      scope 1 {
          debug x => _1;                   // in scope 1 at $DIR/mutable_variable_aggregate_partial_read.rs:5:9: 5:14
          let _2: i32;                     // in scope 1 at $DIR/mutable_variable_aggregate_partial_read.rs:8:9: 8:10
          scope 2 {
              debug y => _2;               // in scope 2 at $DIR/mutable_variable_aggregate_partial_read.rs:8:9: 8:10
          }
      }
  
      bb0: {
          StorageLive(_1);                 // scope 0 at $DIR/mutable_variable_aggregate_partial_read.rs:5:9: 5:14
          _1 = foo() -> bb1;               // scope 0 at $DIR/mutable_variable_aggregate_partial_read.rs:5:29: 5:34
                                           // mir::Constant
                                           // + span: $DIR/mutable_variable_aggregate_partial_read.rs:5:29: 5:32
                                           // + 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:6:5: 6:13
          (_1.0: i32) = const 42_i32;      // scope 1 at $DIR/mutable_variable_aggregate_partial_read.rs:7:5: 7:13
          StorageLive(_2);                 // scope 1 at $DIR/mutable_variable_aggregate_partial_read.rs:8:9: 8:10
-         _2 = (_1.1: i32);                // scope 1 at $DIR/mutable_variable_aggregate_partial_read.rs:8:13: 8:16
+         _2 = const 99_i32;               // scope 1 at $DIR/mutable_variable_aggregate_partial_read.rs:8:13: 8:16
          nop;                             // scope 0 at $DIR/mutable_variable_aggregate_partial_read.rs:4:11: 9:2
          StorageDead(_2);                 // scope 1 at $DIR/mutable_variable_aggregate_partial_read.rs:9:1: 9:2
          StorageDead(_1);                 // scope 0 at $DIR/mutable_variable_aggregate_partial_read.rs:9:1: 9:2
          return;                          // scope 0 at $DIR/mutable_variable_aggregate_partial_read.rs:9:2: 9:2
      }
  }