src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/gen/ArithmeticLIRGenerator.java

*** 1,7 ****
  /*
!  * Copyright (c) 2009, 2018, 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
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ----
  /*
!  * 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
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 108,113 ****
--- 108,118 ----
          }
  
          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)));
+     }
+ 
  }