- // MIR for `reference_propagation_mut` before ReferencePropagation
+ // MIR for `reference_propagation_mut` after ReferencePropagation
  
  fn reference_propagation_mut(_1: &mut T, _2: &mut T) -> () {
      debug single => _1;
      debug multiple => _2;
      let mut _0: ();
      let _3: ();
      let mut _4: usize;
      let _7: ();
      let mut _8: ();
      let _9: ();
      let mut _10: usize;
      let mut _13: &mut usize;
      let mut _14: &mut usize;
      let _16: ();
      let mut _17: ();
      let _18: ();
      let mut _19: usize;
      let _23: ();
      let mut _24: &&mut usize;
      let _25: ();
      let mut _26: usize;
      let _30: ();
      let mut _31: *mut &mut usize;
      let _32: ();
      let mut _33: usize;
      let _36: ();
      let mut _37: &mut usize;
      let _38: ();
      let mut _39: usize;
      let _45: ();
      let mut _46: &mut usize;
      let _47: ();
      let _48: &mut T;
      let _50: ();
      let mut _51: ();
      let _52: ();
      let _53: &mut T;
      let mut _54: &mut T;
      let mut _55: &mut T;
      let _57: ();
      let mut _58: ();
      let _59: ();
      let mut _60: usize;
      let _64: ();
      let mut _65: ();
      let mut _66: usize;
      let _70: ();
      let mut _71: ();
      scope 1 {
          debug a => _4;
          let _5: &mut usize;
          scope 2 {
              debug b => _5;
              let _6: usize;
              scope 3 {
                  debug c => _6;
              }
          }
      }
      scope 4 {
          debug a => _10;
          let mut _11: usize;
          scope 5 {
              debug a2 => _11;
              let mut _12: &mut usize;
              scope 6 {
                  debug b => _12;
                  let _15: usize;
                  scope 7 {
                      debug c => _15;
                  }
              }
          }
      }
      scope 8 {
          debug a => _19;
          let _20: &mut usize;
          scope 9 {
              debug b => _20;
              let _21: &&mut usize;
              scope 10 {
                  debug d => _21;
                  let _22: usize;
                  scope 11 {
                      debug c => _22;
                  }
              }
          }
      }
      scope 12 {
          debug a => _26;
          let mut _27: &mut usize;
          scope 13 {
              debug b => _27;
              let _28: *mut &mut usize;
              scope 14 {
                  debug d => _28;
                  let _29: usize;
                  scope 15 {
                      debug c => _29;
                  }
              }
          }
      }
      scope 16 {
          debug a => _33;
          let _34: &mut usize;
          scope 17 {
              debug b => _34;
              let _35: usize;
              scope 18 {
                  debug c => _35;
              }
          }
      }
      scope 19 {
          debug a => _39;
          let _40: &mut usize;
          scope 20 {
              debug b1 => _40;
              let _41: usize;
              scope 21 {
                  debug c => _41;
                  let _42: &mut usize;
                  scope 22 {
                      debug b2 => _42;
                      let _43: usize;
                      scope 23 {
                          debug c2 => _43;
                          let _44: &mut usize;
                          scope 24 {
                              debug b3 => _44;
                          }
                      }
                  }
              }
          }
      }
      scope 25 {
-         debug a => _48;
+         debug a => _1;
          let _49: T;
          scope 26 {
              debug b => _49;
          }
      }
      scope 27 {
          debug a => _53;
          let _56: T;
          scope 28 {
              debug b => _56;
          }
      }
      scope 29 {
          debug a => _60;
          let _61: &mut usize;
          scope 30 {
              debug b => _61;
              let _62: &&mut usize;
              scope 31 {
                  debug d => _62;
                  let _63: usize;
                  scope 32 {
                      debug c => _63;
                  }
              }
          }
      }
      scope 33 {
          debug a => _66;
          let mut _67: &mut usize;
          scope 34 {
              debug b => _67;
              let _68: &mut &mut usize;
              scope 35 {
                  debug d => _68;
                  let _69: usize;
                  scope 36 {
                      debug c => _69;
                  }
              }
          }
      }
  
      bb0: {
-         StorageLive(_3);
          StorageLive(_4);
          _4 = const 5_usize;
          StorageLive(_5);
          _5 = &mut _4;
          StorageLive(_6);
-         _6 = copy (*_5);
+         _6 = copy _4;
          StorageLive(_7);
          StorageLive(_8);
          _8 = ();
          _7 = opaque::<()>(move _8) -> [return: bb1, unwind continue];
      }
  
      bb1: {
          StorageDead(_8);
          StorageDead(_7);
-         _3 = const ();
          StorageDead(_6);
          StorageDead(_5);
          StorageDead(_4);
-         StorageDead(_3);
-         StorageLive(_9);
          StorageLive(_10);
          _10 = const 5_usize;
          StorageLive(_11);
          _11 = const 7_usize;
          StorageLive(_12);
          _12 = &mut _10;
          StorageLive(_13);
-         StorageLive(_14);
-         _14 = &mut _11;
-         _13 = &mut (*_14);
-         _12 = move _13;
+         _13 = &mut _11;
+         _12 = copy _13;
          StorageDead(_13);
-         StorageDead(_14);
          StorageLive(_15);
          _15 = copy (*_12);
          StorageLive(_16);
          StorageLive(_17);
          _17 = ();
          _16 = opaque::<()>(move _17) -> [return: bb2, unwind continue];
      }
  
      bb2: {
          StorageDead(_17);
          StorageDead(_16);
-         _9 = const ();
          StorageDead(_15);
          StorageDead(_12);
          StorageDead(_11);
          StorageDead(_10);
-         StorageDead(_9);
-         StorageLive(_18);
          StorageLive(_19);
          _19 = const 5_usize;
          StorageLive(_20);
          _20 = &mut _19;
          StorageLive(_21);
          _21 = &_20;
          StorageLive(_22);
          _22 = copy (*_20);
          StorageLive(_23);
          StorageLive(_24);
          _24 = copy _21;
-         _23 = opaque::<&&mut usize>(move _24) -> [return: bb3, unwind continue];
+         _23 = opaque::<&&mut usize>(copy _24) -> [return: bb3, unwind continue];
      }
  
      bb3: {
          StorageDead(_24);
          StorageDead(_23);
-         _18 = const ();
          StorageDead(_22);
          StorageDead(_21);
          StorageDead(_20);
          StorageDead(_19);
-         StorageDead(_18);
-         StorageLive(_25);
          StorageLive(_26);
          _26 = const 5_usize;
          StorageLive(_27);
          _27 = &mut _26;
          StorageLive(_28);
          _28 = &raw mut _27;
          StorageLive(_29);
          _29 = copy (*_27);
          StorageLive(_30);
          StorageLive(_31);
          _31 = copy _28;
-         _30 = opaque::<*mut &mut usize>(move _31) -> [return: bb4, unwind continue];
+         _30 = opaque::<*mut &mut usize>(copy _31) -> [return: bb4, unwind continue];
      }
  
      bb4: {
          StorageDead(_31);
          StorageDead(_30);
-         _25 = const ();
          StorageDead(_29);
          StorageDead(_28);
          StorageDead(_27);
          StorageDead(_26);
-         StorageDead(_25);
-         StorageLive(_32);
          StorageLive(_33);
          _33 = const 7_usize;
          StorageLive(_34);
          _34 = &mut _33;
          StorageLive(_35);
          _35 = copy (*_34);
          StorageLive(_36);
          StorageLive(_37);
-         _37 = move _34;
-         _36 = opaque::<&mut usize>(move _37) -> [return: bb5, unwind continue];
+         _37 = copy _34;
+         _36 = opaque::<&mut usize>(copy _37) -> [return: bb5, unwind continue];
      }
  
      bb5: {
          StorageDead(_37);
          StorageDead(_36);
-         _32 = const ();
          StorageDead(_35);
          StorageDead(_34);
          StorageDead(_33);
-         StorageDead(_32);
-         StorageLive(_38);
          StorageLive(_39);
          _39 = const 7_usize;
          StorageLive(_40);
          _40 = &mut _39;
          StorageLive(_41);
          _41 = copy (*_40);
          StorageLive(_42);
-         _42 = move _40;
+         _42 = copy _40;
          StorageLive(_43);
          _43 = copy (*_42);
          StorageLive(_44);
-         _44 = move _42;
+         _44 = copy _42;
          StorageLive(_45);
          StorageLive(_46);
-         _46 = move _44;
-         _45 = opaque::<&mut usize>(move _46) -> [return: bb6, unwind continue];
+         _46 = copy _44;
+         _45 = opaque::<&mut usize>(copy _46) -> [return: bb6, unwind continue];
      }
  
      bb6: {
          StorageDead(_46);
          StorageDead(_45);
-         _38 = const ();
          StorageDead(_44);
          StorageDead(_43);
          StorageDead(_42);
          StorageDead(_41);
          StorageDead(_40);
          StorageDead(_39);
-         StorageDead(_38);
-         StorageLive(_47);
-         StorageLive(_48);
-         _48 = &mut (*_1);
          StorageLive(_49);
-         _49 = copy (*_48);
+         _49 = copy (*_1);
          StorageLive(_50);
          StorageLive(_51);
          _51 = ();
          _50 = opaque::<()>(move _51) -> [return: bb7, unwind continue];
      }
  
      bb7: {
          StorageDead(_51);
          StorageDead(_50);
-         _47 = const ();
          StorageDead(_49);
-         StorageDead(_48);
-         StorageDead(_47);
-         StorageLive(_52);
          StorageLive(_53);
          _53 = &mut (*_2);
          StorageLive(_54);
-         StorageLive(_55);
-         _55 = &mut (*_1);
-         _54 = &mut (*_55);
-         _2 = move _54;
+         _54 = &mut (*_1);
+         _2 = copy _54;
          StorageDead(_54);
-         StorageDead(_55);
          StorageLive(_56);
          _56 = copy (*_53);
          StorageLive(_57);
          StorageLive(_58);
          _58 = ();
          _57 = opaque::<()>(move _58) -> [return: bb8, unwind continue];
      }
  
      bb8: {
          StorageDead(_58);
          StorageDead(_57);
-         _52 = const ();
          StorageDead(_56);
          StorageDead(_53);
-         StorageDead(_52);
-         StorageLive(_59);
          StorageLive(_60);
          _60 = const 5_usize;
          StorageLive(_61);
          _61 = &mut _60;
          StorageLive(_62);
          _62 = &_61;
          StorageLive(_63);
          _63 = copy (*_61);
          StorageLive(_64);
          StorageLive(_65);
          _65 = ();
          _64 = opaque::<()>(move _65) -> [return: bb9, unwind continue];
      }
  
      bb9: {
          StorageDead(_65);
          StorageDead(_64);
-         _59 = const ();
          StorageDead(_63);
          StorageDead(_62);
          StorageDead(_61);
          StorageDead(_60);
-         StorageDead(_59);
          StorageLive(_66);
          _66 = const 5_usize;
          StorageLive(_67);
          _67 = &mut _66;
          StorageLive(_68);
          _68 = &mut _67;
          StorageLive(_69);
          _69 = copy (*_67);
          StorageLive(_70);
          StorageLive(_71);
          _71 = ();
          _70 = opaque::<()>(move _71) -> [return: bb10, unwind continue];
      }
  
      bb10: {
          StorageDead(_71);
          StorageDead(_70);
          _0 = const ();
          StorageDead(_69);
          StorageDead(_68);
          StorageDead(_67);
          StorageDead(_66);
          return;
      }
  }