graal/com.oracle.graal.lir/src/com/oracle/graal/lir/gen/LIRGeneratorTool.java

*** 187,192 ****
--- 187,202 ----
  
      Value emitByteSwap(Value operand);
  
      Value emitArrayEquals(Kind kind, Value array1, Value array2, Value length);
  
+     @SuppressWarnings("unused")
+     default Value emitCountLeadingZeros(Value value) {
+         throw GraalInternalError.unimplemented();
+     }
+ 
+     @SuppressWarnings("unused")
+     default Value emitCountTrailingZeros(Value value) {
+         throw GraalInternalError.unimplemented();
+     }
+ 
  }