src/java.base/share/classes/jdk/internal/org/objectweb/asm/commons/LocalVariablesSorter.java

*** 103,117 ****
       * Index of the next local variable to be created by {@link #newLocal}.
       */
      protected int nextLocal;
  
      /**
-      * Indicates if at least one local variable has moved due to remapping.
-      */
-     private boolean changed;
- 
-     /**
       * Creates a new {@link LocalVariablesSorter}. <i>Subclasses must not use
       * this constructor</i>. Instead, they must use the
       * {@link #LocalVariablesSorter(int, int, String, MethodVisitor)} version.
       *
       * @param access
--- 103,112 ----
*** 226,240 ****
          if (type != Opcodes.F_NEW) { // uncompressed frame
              throw new IllegalStateException(
                      "ClassReader.accept() should be called with EXPAND_FRAMES flag");
          }
  
-         if (!changed) { // optimization for the case where mapping = identity
-             mv.visitFrame(type, nLocal, local, nStack, stack);
-             return;
-         }
- 
          // creates a copy of newLocals
          Object[] oldLocals = new Object[newLocals.length];
          System.arraycopy(newLocals, 0, oldLocals, 0, oldLocals.length);
  
          updateNewLocals(newLocals);
--- 221,230 ----
*** 326,336 ****
              break;
          }
          int local = newLocalMapping(type);
          setLocalType(local, type);
          setFrameLocal(local, t);
-         changed = true;
          return local;
      }
  
      /**
       * Notifies subclasses that a new stack map frame is being visited. The
--- 316,325 ----
*** 394,406 ****
              setLocalType(value, type);
              mapping[key] = value + 1;
          } else {
              value--;
          }
-         if (value != var) {
-             changed = true;
-         }
          return value;
      }
  
      protected int newLocalMapping(final Type type) {
          int local = nextLocal;
--- 383,392 ----