- // MIR for `multiple_branches` before GVN
+ // MIR for `multiple_branches` after GVN
  
  fn multiple_branches(_1: bool, _2: u8, _3: u8) -> () {
      debug t => _1;
      debug x => _2;
      debug y => _3;
      let mut _0: ();
      let _4: ();
      let mut _5: bool;
      let _6: ();
      let mut _7: u8;
      let mut _8: u8;
      let mut _9: u8;
      let _10: ();
      let mut _11: u8;
      let mut _12: u8;
      let mut _13: u8;
      let _14: ();
      let mut _15: u8;
      let mut _16: u8;
      let mut _17: u8;
      let _18: ();
      let mut _19: u8;
      let mut _20: u8;
      let mut _21: u8;
      let _22: ();
      let mut _23: u8;
      let mut _24: u8;
      let mut _25: u8;
      let mut _26: bool;
      let _27: ();
      let mut _28: u8;
      let mut _29: u8;
      let mut _30: u8;
      let _31: ();
      let mut _32: u8;
      let mut _33: u8;
      let mut _34: u8;
  
      bb0: {
          StorageLive(_4);
          StorageLive(_5);
          _5 = copy _1;
-         switchInt(move _5) -> [0: bb4, otherwise: bb1];
+         switchInt(copy _1) -> [0: bb4, otherwise: bb1];
      }
  
      bb1: {
          StorageLive(_6);
-         StorageLive(_7);
+         nop;
          StorageLive(_8);
          _8 = copy _2;
          StorageLive(_9);
          _9 = copy _3;
-         _7 = Add(move _8, move _9);
+         _7 = Add(copy _2, copy _3);
          StorageDead(_9);
          StorageDead(_8);
-         _6 = opaque::<u8>(move _7) -> [return: bb2, unwind continue];
+         _6 = opaque::<u8>(copy _7) -> [return: bb2, unwind continue];
      }
  
      bb2: {
-         StorageDead(_7);
+         nop;
          StorageDead(_6);
          StorageLive(_10);
          StorageLive(_11);
          StorageLive(_12);
          _12 = copy _2;
          StorageLive(_13);
          _13 = copy _3;
-         _11 = Add(move _12, move _13);
+         _11 = copy _7;
          StorageDead(_13);
          StorageDead(_12);
-         _10 = opaque::<u8>(move _11) -> [return: bb3, unwind continue];
+         _10 = opaque::<u8>(copy _7) -> [return: bb3, unwind continue];
      }
  
      bb3: {
          StorageDead(_11);
          StorageDead(_10);
          _4 = const ();
          goto -> bb7;
      }
  
      bb4: {
          StorageLive(_14);
-         StorageLive(_15);
+         nop;
          StorageLive(_16);
          _16 = copy _2;
          StorageLive(_17);
          _17 = copy _3;
-         _15 = Add(move _16, move _17);
+         _15 = Add(copy _2, copy _3);
          StorageDead(_17);
          StorageDead(_16);
-         _14 = opaque::<u8>(move _15) -> [return: bb5, unwind continue];
+         _14 = opaque::<u8>(copy _15) -> [return: bb5, unwind continue];
      }
  
      bb5: {
-         StorageDead(_15);
+         nop;
          StorageDead(_14);
          StorageLive(_18);
          StorageLive(_19);
          StorageLive(_20);
          _20 = copy _2;
          StorageLive(_21);
          _21 = copy _3;
-         _19 = Add(move _20, move _21);
+         _19 = copy _15;
          StorageDead(_21);
          StorageDead(_20);
-         _18 = opaque::<u8>(move _19) -> [return: bb6, unwind continue];
+         _18 = opaque::<u8>(copy _15) -> [return: bb6, unwind continue];
      }
  
      bb6: {
          StorageDead(_19);
          StorageDead(_18);
          _4 = const ();
          goto -> bb7;
      }
  
      bb7: {
          StorageDead(_5);
          StorageDead(_4);
          StorageLive(_22);
-         StorageLive(_23);
+         nop;
          StorageLive(_24);
          _24 = copy _2;
          StorageLive(_25);
          _25 = copy _3;
-         _23 = Add(move _24, move _25);
+         _23 = Add(copy _2, copy _3);
          StorageDead(_25);
          StorageDead(_24);
-         _22 = opaque::<u8>(move _23) -> [return: bb8, unwind continue];
+         _22 = opaque::<u8>(copy _23) -> [return: bb8, unwind continue];
      }
  
      bb8: {
-         StorageDead(_23);
+         nop;
          StorageDead(_22);
          StorageLive(_26);
          _26 = copy _1;
-         switchInt(move _26) -> [0: bb11, otherwise: bb9];
+         switchInt(copy _1) -> [0: bb11, otherwise: bb9];
      }
  
      bb9: {
          StorageLive(_27);
          StorageLive(_28);
          StorageLive(_29);
          _29 = copy _2;
          StorageLive(_30);
          _30 = copy _3;
-         _28 = Add(move _29, move _30);
+         _28 = copy _23;
          StorageDead(_30);
          StorageDead(_29);
-         _27 = opaque::<u8>(move _28) -> [return: bb10, unwind continue];
+         _27 = opaque::<u8>(copy _23) -> [return: bb10, unwind continue];
      }
  
      bb10: {
          StorageDead(_28);
          StorageDead(_27);
          _0 = const ();
          goto -> bb13;
      }
  
      bb11: {
          StorageLive(_31);
          StorageLive(_32);
          StorageLive(_33);
          _33 = copy _2;
          StorageLive(_34);
          _34 = copy _3;
-         _32 = Add(move _33, move _34);
+         _32 = copy _23;
          StorageDead(_34);
          StorageDead(_33);
-         _31 = opaque::<u8>(move _32) -> [return: bb12, unwind continue];
+         _31 = opaque::<u8>(copy _23) -> [return: bb12, unwind continue];
      }
  
      bb12: {
          StorageDead(_32);
          StorageDead(_31);
          _0 = const ();
          goto -> bb13;
      }
  
      bb13: {
          StorageDead(_26);
          return;
      }
  }