src/share/vm/oops/instanceOop.hpp

rev 3688 : 7054512: Compress class pointers after perm gen removal
Summary: support of compress class pointers in the compilers.
Reviewed-by:

*** 35,45 ****
    // aligned header size.
    static int header_size() { return sizeof(instanceOopDesc)/HeapWordSize; }
  
    // If compressed, the offset of the fields of the instance may not be aligned.
    static int base_offset_in_bytes() {
!     return UseCompressedKlassPointers ?
               klass_gap_offset_in_bytes() :
               sizeof(instanceOopDesc);
    }
  
    static bool contains_field_offset(int offset, int nonstatic_field_size) {
--- 35,47 ----
    // aligned header size.
    static int header_size() { return sizeof(instanceOopDesc)/HeapWordSize; }
  
    // If compressed, the offset of the fields of the instance may not be aligned.
    static int base_offset_in_bytes() {
!     // offset computation code breaks if UseCompressedKlassPointers
!     // only is true
!     return (UseCompressedOops && UseCompressedKlassPointers) ?
               klass_gap_offset_in_bytes() :
               sizeof(instanceOopDesc);
    }
  
    static bool contains_field_offset(int offset, int nonstatic_field_size) {