- // MIR for `copies` before ScalarReplacementOfAggregates
+ // MIR for `copies` after ScalarReplacementOfAggregates
  
  fn copies(_1: Foo) -> () {
      debug x => _1;
      let mut _0: ();
      let _2: Foo;
+     let _11: u8;
+     let _12: ();
+     let _13: &str;
+     let _14: std::option::Option<isize>;
      scope 1 {
-         debug y => _2;
+         debug y => Foo{ .0 => _11, .1 => _12, .2 => _13, .3 => _14, };
          let _3: u8;
          scope 2 {
              debug t => _3;
              let _4: &str;
              scope 3 {
                  debug u => _4;
                  let _5: Foo;
+                 let _7: u8;
+                 let _8: ();
+                 let _9: &str;
+                 let _10: std::option::Option<isize>;
                  scope 4 {
-                     debug z => _5;
+                     debug z => Foo{ .0 => _7, .1 => _8, .2 => _9, .3 => _10, };
                      let _6: ();
                      scope 5 {
                          debug a => _6;
                      }
                  }
              }
          }
      }
  
      bb0: {
-         StorageLive(_2);
-         _2 = _1;
+         StorageLive(_11);
+         StorageLive(_12);
+         StorageLive(_13);
+         StorageLive(_14);
+         nop;
+         _11 = (_1.0: u8);
+         _12 = (_1.1: ());
+         _13 = (_1.2: &str);
+         _14 = (_1.3: std::option::Option<isize>);
+         nop;
          StorageLive(_3);
-         _3 = (_2.0: u8);
+         _3 = _11;
          StorageLive(_4);
-         _4 = (_2.2: &str);
-         StorageLive(_5);
-         _5 = _2;
+         _4 = _13;
+         StorageLive(_7);
+         StorageLive(_8);
+         StorageLive(_9);
+         StorageLive(_10);
+         nop;
+         _7 = _11;
+         _8 = _12;
+         _9 = _13;
+         _10 = _14;
+         nop;
          StorageLive(_6);
-         _6 = (_5.1: ());
+         _6 = _8;
          _0 = const ();
          StorageDead(_6);
-         StorageDead(_5);
+         StorageDead(_7);
+         StorageDead(_8);
+         StorageDead(_9);
+         StorageDead(_10);
+         nop;
          StorageDead(_4);
          StorageDead(_3);
-         StorageDead(_2);
+         StorageDead(_11);
+         StorageDead(_12);
+         StorageDead(_13);
+         StorageDead(_14);
+         nop;
          return;
      }
  }