--- old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/gen/ArithmeticLIRGenerator.java	2019-03-09 03:56:52.044989266 +0100
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/gen/ArithmeticLIRGenerator.java	2019-03-09 03:56:51.672986635 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2009, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -110,4 +110,9 @@
         return isAdd ? emitAdd(resultKind, a, b, setFlags) : emitSub(resultKind, a, b, setFlags);
     }
 
+    public Value emitRor(Value value, Value distance) {
+        // (value >>> distance) | (value << -distance)
+        return emitOr(emitUShr(value, distance), emitShl(value, emitNegate(distance)));
+    }
+
 }