VM_Address result = ss.alloc(isScalar, bytes);
VM_Address result = ss.alloc(bytes, align, offset);
  public final VM_Address allocCopy(VM_Address original, int bytes, 				    boolean isScalar)     throws VM_PragmaInline {      if (VM_Interface.VerifyAssertions) 	VM_Interface._assert(bytes <= LOS_SIZE_THRESHOLD);    VM_Address result = ss.alloc(isScalar, bytes);    return result;  }