src/hotspot/share/runtime/globals.hpp

*** 128,10 ***
--- 128,13 ---
                                                                              \
    product(bool, UseCompressedClassPointers, true,                           \
            "Use 32-bit class pointers in 64-bit VM. "                        \
            "lp64_product means flag is always constant in 32 bit VM")        \
                                                                              \
+   product(bool, UseCompactObjectHeaders, false, EXPERIMENTAL,               \
+           "Use compact 64-bit object headers in 64-bit VM")                 \
+                                                                             \
    product(int, ObjectAlignmentInBytes, 8,                                   \
            "Default object alignment in bytes, 8 is minimum")                \
            range(8, 256)                                                     \
            constraint(ObjectAlignmentInBytesConstraintFunc, AtParse)
  

*** 145,10 ***
--- 148,11 ---
                             notproduct,                                      \
                             range,                                           \
                             constraint)
  const bool UseCompressedOops = false;
  const bool UseCompressedClassPointers = false;
+ const bool UseCompactObjectHeaders = false;
  const int ObjectAlignmentInBytes = 8;
  
  #endif // _LP64
  
  #define RUNTIME_FLAGS(develop,                                              \