--- old/src/hotspot/share/prims/whitebox.cpp	2020-01-07 11:38:55.861932485 +0100
+++ new/src/hotspot/share/prims/whitebox.cpp	2020-01-07 11:38:55.507921293 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2020, 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
@@ -1986,6 +1986,14 @@
 #endif // INCLUDE_CDS
 WB_END
 
+WB_ENTRY(jboolean, WB_isC2OrJVMCIIncludedInVmBuild(JNIEnv* env))
+#if COMPILER2_OR_JVMCI
+  return true;
+#else
+  return false;
+#endif
+WB_END
+
 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
   return HeapShared::is_heap_object_archiving_allowed();
 WB_END
@@ -2411,6 +2419,7 @@
   {CC"areOpenArchiveHeapObjectsMapped",   CC"()Z",    (void*)&WB_AreOpenArchiveHeapObjectsMapped},
   {CC"isCDSIncludedInVmBuild",            CC"()Z",    (void*)&WB_IsCDSIncludedInVmBuild },
   {CC"isJFRIncludedInVmBuild",            CC"()Z",    (void*)&WB_IsJFRIncludedInVmBuild },
+  {CC"isC2OrJVMCIIncludedInVmBuild",      CC"()Z",    (void*)&WB_isC2OrJVMCIIncludedInVmBuild },
   {CC"isJavaHeapArchiveSupported",        CC"()Z",    (void*)&WB_IsJavaHeapArchiveSupported },
   {CC"cdsMemoryMappingFailed",            CC"()Z",    (void*)&WB_CDSMemoryMappingFailed },