--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.asm.aarch64/src/org/graalvm/compiler/asm/aarch64/AArch64Assembler.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/AArch64Assembler.java	Thu Nov 15 09:04:07 2018 -0800
@@ -2775,7 +2775,8 @@
         WFE(0x2),
         WFI(0x3),
         SEV(0x4),
-        SEVL(0x5);
+        SEVL(0x5),
+        CSDB(0x14);
 
         private final int encoding;