diff -r 580bb0b85f63 -r 7e958a8ebcd3 src/hotspot/share/ci/ciUtilities.hpp
--- a/src/hotspot/share/ci/ciUtilities.hpp	Mon Feb 26 09:34:20 2018 +0100
+++ b/src/hotspot/share/ci/ciUtilities.hpp	Mon Feb 26 09:34:12 2018 +0100
@@ -27,6 +27,7 @@
 
 #include "ci/ciEnv.hpp"
 #include "runtime/interfaceSupport.hpp"
+#include "utilities/globalDefinitions.hpp"
 
 // The following routines and definitions are used internally in the
 // compiler interface.
@@ -114,4 +115,9 @@
 const char* basictype_to_str(BasicType t);
 const char  basictype_to_char(BasicType t);
 
+jbyte *ci_card_table_address();
+template <typename T> T ci_card_table_address_as() {
+  return reinterpret_cast<T>(ci_card_table_address());
+}
+
 #endif // SHARE_VM_CI_CIUTILITIES_HPP