--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.asm.aarch64/src/org/graalvm/compiler/asm/aarch64/AArch64MacroAssembler.java	Thu Nov 15 21:05:47 2018 +0100
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.asm.aarch64/src/org/graalvm/compiler/asm/aarch64/AArch64MacroAssembler.java	Thu Nov 15 09:04:07 2018 -0800
@@ -1476,6 +1476,14 @@
     }
 
     /**
+     * Consumption of Speculative Data Barrier. This is a memory barrier that controls speculative
+     * execution and data value prediction.
+     */
+    public void csdb() {
+        super.hint(SystemHint.CSDB);
+    }
+
+    /**
      * Same as {@link #nop()}.
      */
     @Override