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

@@ -56,10 +56,24 @@
 
         @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());
 
     /**