- // MIR for `arithmetic_checked` before GVN
+ // MIR for `arithmetic_checked` after GVN
  
  fn arithmetic_checked(_1: u64) -> () {
      debug x => _1;
      let mut _0: ();
      let _2: ();
      let mut _3: u64;
      let mut _4: u64;
      let mut _5: (u64, bool);
      let _6: ();
      let mut _7: u64;
      let mut _8: u64;
      let mut _9: (u64, bool);
      let _10: ();
      let mut _11: u64;
      let mut _12: u64;
      let mut _13: (u64, bool);
      let _14: ();
      let mut _15: u64;
      let mut _16: u64;
      let mut _17: (u64, bool);
      let _18: ();
      let mut _19: u64;
      let mut _20: u64;
      let mut _21: bool;
      let _22: ();
      let mut _23: u64;
      let mut _24: u64;
      let mut _25: bool;
      let _26: ();
      let mut _27: u64;
      let mut _28: u64;
      let mut _29: bool;
      let _30: ();
      let mut _31: u64;
      let mut _32: u64;
      let mut _33: bool;
      let _34: ();
      let mut _35: u64;
      let mut _36: u64;
      let mut _37: bool;
      let _38: ();
      let mut _39: u64;
      let mut _40: u64;
      let mut _41: bool;
      let _42: ();
      let mut _43: u64;
      let mut _44: u64;
      let mut _45: bool;
      let _46: ();
      let mut _47: u64;
      let mut _48: u64;
      let mut _49: bool;
      let _50: ();
      let mut _51: u64;
      let mut _52: u64;
      let _53: ();
      let mut _54: u64;
      let mut _55: u64;
      let _56: ();
      let mut _57: u64;
      let mut _58: u64;
      let _59: ();
      let mut _60: u64;
      let mut _61: u64;
      let mut _62: u32;
      let mut _63: bool;
      let _64: ();
      let mut _65: u64;
      let mut _66: u64;
      let mut _67: u32;
      let mut _68: bool;
  
      bb0: {
          StorageLive(_2);
          StorageLive(_3);
-         StorageLive(_4);
-         _4 = _1;
-         _5 = CheckedAdd(_4, const 0_u64);
-         assert(!move (_5.1: bool), "attempt to compute `{} + {}`, which would overflow", move _4, const 0_u64) -> [success: bb1, unwind unreachable];
+         _5 = CheckedAdd(_1, const 0_u64);
+         assert(!move (_5.1: bool), "attempt to compute `{} + {}`, which would overflow", _1, const 0_u64) -> [success: bb1, unwind unreachable];
      }
  
      bb1: {
          _3 = move (_5.0: u64);
-         StorageDead(_4);
          _2 = opaque::<u64>(move _3) -> [return: bb2, unwind unreachable];
      }
  
      bb2: {
          StorageDead(_3);
          StorageDead(_2);
          StorageLive(_6);
          StorageLive(_7);
-         StorageLive(_8);
-         _8 = _1;
-         _9 = CheckedSub(_8, const 0_u64);
-         assert(!move (_9.1: bool), "attempt to compute `{} - {}`, which would overflow", move _8, const 0_u64) -> [success: bb3, unwind unreachable];
+         _9 = CheckedSub(_1, const 0_u64);
+         assert(!move (_9.1: bool), "attempt to compute `{} - {}`, which would overflow", _1, const 0_u64) -> [success: bb3, unwind unreachable];
      }
  
      bb3: {
          _7 = move (_9.0: u64);
-         StorageDead(_8);
          _6 = opaque::<u64>(move _7) -> [return: bb4, unwind unreachable];
      }
  
      bb4: {
          StorageDead(_7);
          StorageDead(_6);
          StorageLive(_10);
          StorageLive(_11);
-         StorageLive(_12);
-         _12 = _1;
-         _13 = CheckedMul(_12, const 0_u64);
-         assert(!move (_13.1: bool), "attempt to compute `{} * {}`, which would overflow", move _12, const 0_u64) -> [success: bb5, unwind unreachable];
+         _13 = CheckedMul(_1, const 0_u64);
+         assert(!move (_13.1: bool), "attempt to compute `{} * {}`, which would overflow", _1, const 0_u64) -> [success: bb5, unwind unreachable];
      }
  
      bb5: {
          _11 = move (_13.0: u64);
-         StorageDead(_12);
          _10 = opaque::<u64>(move _11) -> [return: bb6, unwind unreachable];
      }
  
      bb6: {
          StorageDead(_11);
          StorageDead(_10);
          StorageLive(_14);
          StorageLive(_15);
-         StorageLive(_16);
-         _16 = _1;
-         _17 = CheckedMul(_16, const 1_u64);
-         assert(!move (_17.1: bool), "attempt to compute `{} * {}`, which would overflow", move _16, const 1_u64) -> [success: bb7, unwind unreachable];
+         _17 = CheckedMul(_1, const 1_u64);
+         assert(!move (_17.1: bool), "attempt to compute `{} * {}`, which would overflow", _1, const 1_u64) -> [success: bb7, unwind unreachable];
      }
  
      bb7: {
          _15 = move (_17.0: u64);
-         StorageDead(_16);
          _14 = opaque::<u64>(move _15) -> [return: bb8, unwind unreachable];
      }
  
      bb8: {
          StorageDead(_15);
          StorageDead(_14);
          StorageLive(_18);
          StorageLive(_19);
-         StorageLive(_20);
-         _20 = _1;
          _21 = Eq(const 0_u64, const 0_u64);
-         assert(!move _21, "attempt to divide `{}` by zero", _20) -> [success: bb9, unwind unreachable];
+         assert(!_21, "attempt to divide `{}` by zero", _1) -> [success: bb9, unwind unreachable];
      }
  
      bb9: {
-         _19 = Div(move _20, const 0_u64);
-         StorageDead(_20);
+         _19 = Div(_1, const 0_u64);
          _18 = opaque::<u64>(move _19) -> [return: bb10, unwind unreachable];
      }
  
      bb10: {
          StorageDead(_19);
          StorageDead(_18);
          StorageLive(_22);
          StorageLive(_23);
-         StorageLive(_24);
-         _24 = _1;
          _25 = Eq(const 1_u64, const 0_u64);
-         assert(!move _25, "attempt to divide `{}` by zero", _24) -> [success: bb11, unwind unreachable];
+         assert(!_25, "attempt to divide `{}` by zero", _1) -> [success: bb11, unwind unreachable];
      }
  
      bb11: {
-         _23 = Div(move _24, const 1_u64);
-         StorageDead(_24);
+         _23 = Div(_1, const 1_u64);
          _22 = opaque::<u64>(move _23) -> [return: bb12, unwind unreachable];
      }
  
      bb12: {
          StorageDead(_23);
          StorageDead(_22);
          StorageLive(_26);
          StorageLive(_27);
-         StorageLive(_28);
-         _28 = _1;
-         _29 = Eq(_28, const 0_u64);
-         assert(!move _29, "attempt to divide `{}` by zero", const 0_u64) -> [success: bb13, unwind unreachable];
+         _29 = Eq(_1, const 0_u64);
+         assert(!_29, "attempt to divide `{}` by zero", const 0_u64) -> [success: bb13, unwind unreachable];
      }
  
      bb13: {
-         _27 = Div(const 0_u64, move _28);
-         StorageDead(_28);
+         _27 = Div(const 0_u64, _1);
          _26 = opaque::<u64>(move _27) -> [return: bb14, unwind unreachable];
      }
  
      bb14: {
          StorageDead(_27);
          StorageDead(_26);
          StorageLive(_30);
          StorageLive(_31);
-         StorageLive(_32);
-         _32 = _1;
-         _33 = Eq(_32, const 0_u64);
-         assert(!move _33, "attempt to divide `{}` by zero", const 1_u64) -> [success: bb15, unwind unreachable];
+         assert(!_29, "attempt to divide `{}` by zero", const 1_u64) -> [success: bb15, unwind unreachable];
      }
  
      bb15: {
-         _31 = Div(const 1_u64, move _32);
-         StorageDead(_32);
+         _31 = Div(const 1_u64, _1);
          _30 = opaque::<u64>(move _31) -> [return: bb16, unwind unreachable];
      }
  
      bb16: {
          StorageDead(_31);
          StorageDead(_30);
          StorageLive(_34);
          StorageLive(_35);
-         StorageLive(_36);
-         _36 = _1;
-         _37 = Eq(const 0_u64, const 0_u64);
-         assert(!move _37, "attempt to calculate the remainder of `{}` with a divisor of zero", _36) -> [success: bb17, unwind unreachable];
+         assert(!_21, "attempt to calculate the remainder of `{}` with a divisor of zero", _1) -> [success: bb17, unwind unreachable];
      }
  
      bb17: {
-         _35 = Rem(move _36, const 0_u64);
-         StorageDead(_36);
+         _35 = Rem(_1, const 0_u64);
          _34 = opaque::<u64>(move _35) -> [return: bb18, unwind unreachable];
      }
  
      bb18: {
          StorageDead(_35);
          StorageDead(_34);
          StorageLive(_38);
          StorageLive(_39);
-         StorageLive(_40);
-         _40 = _1;
-         _41 = Eq(const 1_u64, const 0_u64);
-         assert(!move _41, "attempt to calculate the remainder of `{}` with a divisor of zero", _40) -> [success: bb19, unwind unreachable];
+         assert(!_25, "attempt to calculate the remainder of `{}` with a divisor of zero", _1) -> [success: bb19, unwind unreachable];
      }
  
      bb19: {
-         _39 = Rem(move _40, const 1_u64);
-         StorageDead(_40);
+         _39 = Rem(_1, const 1_u64);
          _38 = opaque::<u64>(move _39) -> [return: bb20, unwind unreachable];
      }
  
      bb20: {
          StorageDead(_39);
          StorageDead(_38);
          StorageLive(_42);
          StorageLive(_43);
-         StorageLive(_44);
-         _44 = _1;
-         _45 = Eq(_44, const 0_u64);
-         assert(!move _45, "attempt to calculate the remainder of `{}` with a divisor of zero", const 0_u64) -> [success: bb21, unwind unreachable];
+         assert(!_29, "attempt to calculate the remainder of `{}` with a divisor of zero", const 0_u64) -> [success: bb21, unwind unreachable];
      }
  
      bb21: {
-         _43 = Rem(const 0_u64, move _44);
-         StorageDead(_44);
+         _43 = Rem(const 0_u64, _1);
          _42 = opaque::<u64>(move _43) -> [return: bb22, unwind unreachable];
      }
  
      bb22: {
          StorageDead(_43);
          StorageDead(_42);
          StorageLive(_46);
          StorageLive(_47);
-         StorageLive(_48);
-         _48 = _1;
-         _49 = Eq(_48, const 0_u64);
-         assert(!move _49, "attempt to calculate the remainder of `{}` with a divisor of zero", const 1_u64) -> [success: bb23, unwind unreachable];
+         assert(!_29, "attempt to calculate the remainder of `{}` with a divisor of zero", const 1_u64) -> [success: bb23, unwind unreachable];
      }
  
      bb23: {
-         _47 = Rem(const 1_u64, move _48);
-         StorageDead(_48);
+         _47 = Rem(const 1_u64, _1);
          _46 = opaque::<u64>(move _47) -> [return: bb24, unwind unreachable];
      }
  
      bb24: {
          StorageDead(_47);
          StorageDead(_46);
          StorageLive(_50);
          StorageLive(_51);
-         StorageLive(_52);
-         _52 = _1;
-         _51 = BitAnd(move _52, const 0_u64);
-         StorageDead(_52);
+         _51 = BitAnd(_1, const 0_u64);
          _50 = opaque::<u64>(move _51) -> [return: bb25, unwind unreachable];
      }
  
      bb25: {
          StorageDead(_51);
          StorageDead(_50);
          StorageLive(_53);
          StorageLive(_54);
-         StorageLive(_55);
-         _55 = _1;
-         _54 = BitOr(move _55, const 0_u64);
-         StorageDead(_55);
+         _54 = BitOr(_1, const 0_u64);
          _53 = opaque::<u64>(move _54) -> [return: bb26, unwind unreachable];
      }
  
      bb26: {
          StorageDead(_54);
          StorageDead(_53);
          StorageLive(_56);
          StorageLive(_57);
-         StorageLive(_58);
-         _58 = _1;
-         _57 = BitXor(move _58, const 0_u64);
-         StorageDead(_58);
+         _57 = BitXor(_1, const 0_u64);
          _56 = opaque::<u64>(move _57) -> [return: bb27, unwind unreachable];
      }
  
      bb27: {
          StorageDead(_57);
          StorageDead(_56);
          StorageLive(_59);
          StorageLive(_60);
-         StorageLive(_61);
-         _61 = _1;
          _62 = const 0_i32 as u32 (IntToInt);
-         _63 = Lt(move _62, const 64_u32);
-         assert(move _63, "attempt to shift right by `{}`, which would overflow", const 0_i32) -> [success: bb28, unwind unreachable];
+         _63 = Lt(_62, const 64_u32);
+         assert(_63, "attempt to shift right by `{}`, which would overflow", const 0_i32) -> [success: bb28, unwind unreachable];
      }
  
      bb28: {
-         _60 = Shr(move _61, const 0_i32);
-         StorageDead(_61);
+         _60 = Shr(_1, const 0_i32);
          _59 = opaque::<u64>(move _60) -> [return: bb29, unwind unreachable];
      }
  
      bb29: {
          StorageDead(_60);
          StorageDead(_59);
          StorageLive(_64);
          StorageLive(_65);
-         StorageLive(_66);
-         _66 = _1;
-         _67 = const 0_i32 as u32 (IntToInt);
-         _68 = Lt(move _67, const 64_u32);
-         assert(move _68, "attempt to shift left by `{}`, which would overflow", const 0_i32) -> [success: bb30, unwind unreachable];
+         assert(_63, "attempt to shift left by `{}`, which would overflow", const 0_i32) -> [success: bb30, unwind unreachable];
      }
  
      bb30: {
-         _65 = Shl(move _66, const 0_i32);
-         StorageDead(_66);
+         _65 = Shl(_1, const 0_i32);
          _64 = opaque::<u64>(move _65) -> [return: bb31, unwind unreachable];
      }
  
      bb31: {
          StorageDead(_65);
          StorageDead(_64);
          _0 = const ();
          return;
      }
  }