src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.meta/src/jdk/vm/ci/meta/SpeculationLog.java

*** 56,65 ****
--- 56,79 ----
  
          @Override
          public String toString() {
              return reason.toString();
          }
+ 
+         @Override
+         public boolean equals(Object obj) {
+             if (obj instanceof Speculation) {
+                 Speculation other = (Speculation) obj;
+                 return reason.equals(other.reason);
+             }
+             return false;
+         }
+ 
+         @Override
+         public int hashCode() {
+             return getReason().hashCode();
+         }
      }
  
      Speculation NO_SPECULATION = new Speculation(new NoSpeculationReason());
  
      /**