src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/NamedLocationIdentity.java

*** 21,33 ****
   * questions.
   */
  package org.graalvm.compiler.nodes;
  
  import java.util.EnumMap;
- import java.util.HashSet;
  
  import org.graalvm.compiler.core.common.LocationIdentity;
  
  import jdk.vm.ci.meta.JavaKind;
  import jdk.vm.ci.meta.JavaKind.FormatWithToString;
  
  /**
--- 21,34 ----
   * questions.
   */
  package org.graalvm.compiler.nodes;
  
  import java.util.EnumMap;
  
  import org.graalvm.compiler.core.common.LocationIdentity;
+ import org.graalvm.util.Equivalence;
+ import org.graalvm.util.EconomicSet;
  
  import jdk.vm.ci.meta.JavaKind;
  import jdk.vm.ci.meta.JavaKind.FormatWithToString;
  
  /**
*** 37,47 ****
  
      /**
       * Map for asserting all {@link NamedLocationIdentity} instances have a unique name.
       */
      static class DB {
!         private static final HashSet<String> map = new HashSet<>();
  
          static boolean checkUnique(String name) {
              if (!map.add(name)) {
                  throw new AssertionError("identity " + name + " already exists");
              }
--- 38,48 ----
  
      /**
       * Map for asserting all {@link NamedLocationIdentity} instances have a unique name.
       */
      static class DB {
!         private static final EconomicSet<String> map = EconomicSet.create(Equivalence.DEFAULT);
  
          static boolean checkUnique(String name) {
              if (!map.add(name)) {
                  throw new AssertionError("identity " + name + " already exists");
              }
*** 57,70 ****
      /**
       * Denotes the location of the length field of a Java array.
       */
      public static final LocationIdentity ARRAY_LENGTH_LOCATION = NamedLocationIdentity.immutable("[].length");
  
-     public static LocationIdentity any() {
-         return ANY_LOCATION;
-     }
- 
      private final String name;
      private final boolean immutable;
  
      protected NamedLocationIdentity(String name, boolean immutable) {
          this.name = name;
--- 58,67 ----