*** old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/LIRInstruction.java	Mon Mar 20 17:39:43 2017
--- new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/LIRInstruction.java	Mon Mar 20 17:39:43 2017

*** 392,397 ****
--- 392,402 ----
      }
  
      public LIRInstructionClass<?> getLIRInstructionClass() {
          return instructionClass;
      }
+ 
+     @Override
+     public int hashCode() {
+         return id;
+     }
  }