- // MIR for `arithmetic` before GVN
+ // MIR for `arithmetic` after GVN
  
  fn arithmetic(_1: u64) -> () {
      debug x => _1;
      let mut _0: ();
      let _2: ();
      let mut _3: u64;
      let mut _4: u64;
      let _5: ();
      let mut _6: u64;
      let mut _7: u64;
      let _8: ();
      let mut _9: u64;
      let mut _10: u64;
      let mut _11: u64;
      let _12: ();
      let mut _13: u64;
      let mut _14: u64;
      let _15: ();
      let mut _16: u64;
      let mut _17: u64;
      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 _62: ();
      let mut _63: u64;
      let mut _64: u64;
      let _65: ();
      let mut _66: u64;
      let mut _67: u64;
      let mut _68: u64;
      let _69: ();
      let mut _70: u64;
      let mut _71: u64;
      let _72: ();
      let mut _73: u64;
      let mut _74: u64;
  
      bb0: {
          StorageLive(_2);
          StorageLive(_3);
          StorageLive(_4);
          _4 = _1;
-         _3 = Add(move _4, const 0_u64);
+         _3 = _1;
          StorageDead(_4);
-         _2 = opaque::<u64>(move _3) -> [return: bb1, unwind continue];
+         _2 = opaque::<u64>(_1) -> [return: bb1, unwind continue];
      }
  
      bb1: {
          StorageDead(_3);
          StorageDead(_2);
          StorageLive(_5);
          StorageLive(_6);
          StorageLive(_7);
          _7 = _1;
-         _6 = Sub(move _7, const 0_u64);
+         _6 = _1;
          StorageDead(_7);
-         _5 = opaque::<u64>(move _6) -> [return: bb2, unwind continue];
+         _5 = opaque::<u64>(_1) -> [return: bb2, unwind continue];
      }
  
      bb2: {
          StorageDead(_6);
          StorageDead(_5);
          StorageLive(_8);
-         StorageLive(_9);
+         nop;
          StorageLive(_10);
          _10 = _1;
          StorageLive(_11);
          _11 = _1;
-         _9 = Sub(move _10, move _11);
+         _9 = const 0_u64;
          StorageDead(_11);
          StorageDead(_10);
-         _8 = opaque::<u64>(move _9) -> [return: bb3, unwind continue];
+         _8 = opaque::<u64>(const 0_u64) -> [return: bb3, unwind continue];
      }
  
      bb3: {
-         StorageDead(_9);
+         nop;
          StorageDead(_8);
          StorageLive(_12);
          StorageLive(_13);
          StorageLive(_14);
          _14 = _1;
-         _13 = Mul(move _14, const 0_u64);
+         _13 = const 0_u64;
          StorageDead(_14);
-         _12 = opaque::<u64>(move _13) -> [return: bb4, unwind continue];
+         _12 = opaque::<u64>(const 0_u64) -> [return: bb4, unwind continue];
      }
  
      bb4: {
          StorageDead(_13);
          StorageDead(_12);
          StorageLive(_15);
          StorageLive(_16);
          StorageLive(_17);
          _17 = _1;
-         _16 = Mul(move _17, const 1_u64);
+         _16 = _1;
          StorageDead(_17);
-         _15 = opaque::<u64>(move _16) -> [return: bb5, unwind continue];
+         _15 = opaque::<u64>(_1) -> [return: bb5, unwind continue];
      }
  
      bb5: {
          StorageDead(_16);
          StorageDead(_15);
          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: bb6, unwind continue];
+         _21 = const true;
+         assert(!const true, "attempt to divide `{}` by zero", _1) -> [success: bb6, unwind continue];
      }
  
      bb6: {
-         _19 = Div(move _20, const 0_u64);
+         _19 = Div(_1, const 0_u64);
          StorageDead(_20);
          _18 = opaque::<u64>(move _19) -> [return: bb7, unwind continue];
      }
  
      bb7: {
          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: bb8, unwind continue];
+         _25 = const false;
+         assert(!const false, "attempt to divide `{}` by zero", _1) -> [success: bb8, unwind continue];
      }
  
      bb8: {
-         _23 = Div(move _24, const 1_u64);
+         _23 = _1;
          StorageDead(_24);
-         _22 = opaque::<u64>(move _23) -> [return: bb9, unwind continue];
+         _22 = opaque::<u64>(_1) -> [return: bb9, unwind continue];
      }
  
      bb9: {
          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: bb10, unwind continue];
+         _29 = Eq(_1, const 0_u64);
+         assert(!_29, "attempt to divide `{}` by zero", const 0_u64) -> [success: bb10, unwind continue];
      }
  
      bb10: {
-         _27 = Div(const 0_u64, move _28);
+         _27 = const 0_u64;
          StorageDead(_28);
-         _26 = opaque::<u64>(move _27) -> [return: bb11, unwind continue];
+         _26 = opaque::<u64>(const 0_u64) -> [return: bb11, unwind continue];
      }
  
      bb11: {
          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: bb12, unwind continue];
+         _33 = _29;
+         assert(!_29, "attempt to divide `{}` by zero", const 1_u64) -> [success: bb12, unwind continue];
      }
  
      bb12: {
-         _31 = Div(const 1_u64, move _32);
+         _31 = Div(const 1_u64, _1);
          StorageDead(_32);
          _30 = opaque::<u64>(move _31) -> [return: bb13, unwind continue];
      }
  
      bb13: {
          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: bb14, unwind continue];
+         _37 = const true;
+         assert(!const true, "attempt to calculate the remainder of `{}` with a divisor of zero", _1) -> [success: bb14, unwind continue];
      }
  
      bb14: {
-         _35 = Rem(move _36, const 0_u64);
+         _35 = Rem(_1, const 0_u64);
          StorageDead(_36);
          _34 = opaque::<u64>(move _35) -> [return: bb15, unwind continue];
      }
  
      bb15: {
          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: bb16, unwind continue];
+         _41 = const false;
+         assert(!const false, "attempt to calculate the remainder of `{}` with a divisor of zero", _1) -> [success: bb16, unwind continue];
      }
  
      bb16: {
-         _39 = Rem(move _40, const 1_u64);
+         _39 = const 0_u64;
          StorageDead(_40);
-         _38 = opaque::<u64>(move _39) -> [return: bb17, unwind continue];
+         _38 = opaque::<u64>(const 0_u64) -> [return: bb17, unwind continue];
      }
  
      bb17: {
          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: bb18, unwind continue];
+         _45 = _29;
+         assert(!_29, "attempt to calculate the remainder of `{}` with a divisor of zero", const 0_u64) -> [success: bb18, unwind continue];
      }
  
      bb18: {
-         _43 = Rem(const 0_u64, move _44);
+         _43 = const 0_u64;
          StorageDead(_44);
-         _42 = opaque::<u64>(move _43) -> [return: bb19, unwind continue];
+         _42 = opaque::<u64>(const 0_u64) -> [return: bb19, unwind continue];
      }
  
      bb19: {
          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: bb20, unwind continue];
+         _49 = _29;
+         assert(!_29, "attempt to calculate the remainder of `{}` with a divisor of zero", const 1_u64) -> [success: bb20, unwind continue];
      }
  
      bb20: {
-         _47 = Rem(const 1_u64, move _48);
+         _47 = Rem(const 1_u64, _1);
          StorageDead(_48);
          _46 = opaque::<u64>(move _47) -> [return: bb21, unwind continue];
      }
  
      bb21: {
          StorageDead(_47);
          StorageDead(_46);
          StorageLive(_50);
          StorageLive(_51);
          StorageLive(_52);
          _52 = _1;
-         _51 = BitAnd(move _52, const 0_u64);
+         _51 = const 0_u64;
          StorageDead(_52);
-         _50 = opaque::<u64>(move _51) -> [return: bb22, unwind continue];
+         _50 = opaque::<u64>(const 0_u64) -> [return: bb22, unwind continue];
      }
  
      bb22: {
          StorageDead(_51);
          StorageDead(_50);
          StorageLive(_53);
          StorageLive(_54);
          StorageLive(_55);
          _55 = _1;
-         _54 = BitAnd(move _55, const core::num::<impl u64>::MAX);
+         _54 = _1;
          StorageDead(_55);
-         _53 = opaque::<u64>(move _54) -> [return: bb23, unwind continue];
+         _53 = opaque::<u64>(_1) -> [return: bb23, unwind continue];
      }
  
      bb23: {
          StorageDead(_54);
          StorageDead(_53);
          StorageLive(_56);
          StorageLive(_57);
          StorageLive(_58);
          _58 = _1;
-         _57 = BitOr(move _58, const 0_u64);
+         _57 = _1;
          StorageDead(_58);
-         _56 = opaque::<u64>(move _57) -> [return: bb24, unwind continue];
+         _56 = opaque::<u64>(_1) -> [return: bb24, unwind continue];
      }
  
      bb24: {
          StorageDead(_57);
          StorageDead(_56);
          StorageLive(_59);
          StorageLive(_60);
          StorageLive(_61);
          _61 = _1;
-         _60 = BitOr(move _61, const core::num::<impl u64>::MAX);
+         _60 = const u64::MAX;
          StorageDead(_61);
-         _59 = opaque::<u64>(move _60) -> [return: bb25, unwind continue];
+         _59 = opaque::<u64>(const u64::MAX) -> [return: bb25, unwind continue];
      }
  
      bb25: {
          StorageDead(_60);
          StorageDead(_59);
          StorageLive(_62);
          StorageLive(_63);
          StorageLive(_64);
          _64 = _1;
-         _63 = BitXor(move _64, const 0_u64);
+         _63 = _1;
          StorageDead(_64);
-         _62 = opaque::<u64>(move _63) -> [return: bb26, unwind continue];
+         _62 = opaque::<u64>(_1) -> [return: bb26, unwind continue];
      }
  
      bb26: {
          StorageDead(_63);
          StorageDead(_62);
          StorageLive(_65);
          StorageLive(_66);
          StorageLive(_67);
          _67 = _1;
          StorageLive(_68);
          _68 = _1;
-         _66 = BitXor(move _67, move _68);
+         _66 = const 0_u64;
          StorageDead(_68);
          StorageDead(_67);
-         _65 = opaque::<u64>(move _66) -> [return: bb27, unwind continue];
+         _65 = opaque::<u64>(const 0_u64) -> [return: bb27, unwind continue];
      }
  
      bb27: {
          StorageDead(_66);
          StorageDead(_65);
          StorageLive(_69);
          StorageLive(_70);
          StorageLive(_71);
          _71 = _1;
-         _70 = Shr(move _71, const 0_i32);
+         _70 = _1;
          StorageDead(_71);
-         _69 = opaque::<u64>(move _70) -> [return: bb28, unwind continue];
+         _69 = opaque::<u64>(_1) -> [return: bb28, unwind continue];
      }
  
      bb28: {
          StorageDead(_70);
          StorageDead(_69);
          StorageLive(_72);
          StorageLive(_73);
          StorageLive(_74);
          _74 = _1;
-         _73 = Shl(move _74, const 0_i32);
+         _73 = _1;
          StorageDead(_74);
-         _72 = opaque::<u64>(move _73) -> [return: bb29, unwind continue];
+         _72 = opaque::<u64>(_1) -> [return: bb29, unwind continue];
      }
  
      bb29: {
          StorageDead(_73);
          StorageDead(_72);
          _0 = const ();
          return;
      }
  }