int value = VM_Magic.getMemoryInt(block.add(FREE_LIST_OFFSET)); value = (value & SIZE_CLASS_MASK)>>SIZE_CLASS_SHIFT; return value;
VM_Word value = VM_Magic.getMemoryWord(block.add(FREE_LIST_OFFSET)); value = value.and(SIZE_CLASS_MASK).rshl(SIZE_CLASS_SHIFT); return value.toInt();
  protected static final int getBlockSizeClass(VM_Address block)     throws VM_PragmaInline {    int value = VM_Magic.getMemoryInt(block.add(FREE_LIST_OFFSET));    value = (value & SIZE_CLASS_MASK)>>SIZE_CLASS_SHIFT;    return value;  }