--- old/src/share/vm/compiler/compilerDirectives.hpp	2016-03-02 14:29:24.465648612 +0100
+++ new/src/share/vm/compiler/compilerDirectives.hpp	2016-03-02 14:29:24.305648605 +0100
@@ -42,6 +42,7 @@
     cflags(PrintAssembly,           bool, PrintAssembly, PrintAssembly) \
     cflags(PrintInlining,           bool, PrintInlining, PrintInlining) \
     cflags(PrintNMethods,           bool, PrintNMethods, PrintNMethods) \
+    cflags(BackgroundCompilation,   bool, BackgroundCompilation, X) \
     cflags(ReplayInline,            bool, false, ReplayInline) \
     cflags(DumpReplay,              bool, false, DumpReplay) \
     cflags(DumpInline,              bool, false, DumpInline) \
@@ -87,7 +88,7 @@
   static DirectiveSet* getMatchingDirective(methodHandle mh, AbstractCompiler* comp);
   static DirectiveSet* getDefaultDirective(AbstractCompiler* comp);
   static void push(CompilerDirectives* directive);
-  static void pop();
+  static void pop(int count);
   static bool check_capacity(int request_size, outputStream* st);
   static void clear();
   static void print(outputStream* st);