http://www.bitsavers.org/pdf/dec/vax/microfiche/vms-source-listings/AH-BT13A-SE__VAX-VMS_V4.0_SRC_LST_MCRF/AH-BT13A-SE__VAX-VMS_V4.0_SRC_LST_MCRF/
The update to V4.1 is at http://www.bitsavers.org/pdf/dec/vax/microfiche/vms-source-listings/AH-BT13A-SE__VAX-VMS_V4.0_SRC_LST_MCRF/AH-EF71A-SE__VAX-VMS_V4.1_SRC_LST_MCRF_UPD/ Not sure who needs to know.Perhaps they are useful for emulation crash analysis, or for educational purposes.
You also see the highly optimizing BLISS32 compiler at work. regards, Joerg