- // MIR for `test` before GVN
+ // MIR for `test` after GVN
  
  fn test(_1: bool, _2: bool) -> bool {
      debug x => _1;
      debug y => _2;
      let mut _0: bool;
      let _3: bool;
      let mut _4: bool;
      let mut _6: bool;
      let mut _7: bool;
      let mut _8: bool;
      scope 1 {
          debug a => _3;
          let _5: bool;
          scope 2 {
              debug b => _5;
          }
      }
  
      bb0: {
-         StorageLive(_3);
+         nop;
          StorageLive(_4);
          _4 = copy _2;
-         _3 = BitOr(move _4, const true);
+         _3 = const true;
          StorageDead(_4);
-         StorageLive(_5);
+         nop;
          StorageLive(_6);
          _6 = copy _1;
-         _5 = BitAnd(move _6, const false);
+         _5 = const false;
          StorageDead(_6);
          StorageLive(_7);
-         _7 = copy _3;
+         _7 = const true;
          StorageLive(_8);
-         _8 = copy _5;
-         _0 = BitAnd(move _7, move _8);
+         _8 = const false;
+         _0 = const false;
          StorageDead(_8);
          StorageDead(_7);
-         StorageDead(_5);
-         StorageDead(_3);
+         nop;
+         nop;
          return;
      }
  }