Absolutely. The OP did not ask "is XREF a good or a bad thing?" He asked "what is the effect on overhead?"
*Personally*, I think XREF is an idea whose time has passed. In the days of card decks and greenbar listings, I was the world's biggest (assembler) XREF fan. I can't remember the last time I used the XREF output -- I just do a find in the source code -- or possibly the listing, if a macro might be making a reference that did not appear in the macro invocation. Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Daniel A. McLaughlin Sent: Tuesday, September 26, 2006 6:18 AM To: [email protected] Subject: Re: Overhead caused by LE options with (XREF, MAP, LET) ??? Snipped I would be 99.9% certain that they have no effect on run-time performance, except that LET might lead to S0C1s and such. They have a HUGE effect on compiler performance. XREF may double the amount of output produced, and that will double the EXCPs, and certainly increase the CPU cycles. Similar for MAP. >>> end I guess it depends on how much importance one places on the XREF and so on. If the program is in development, it might be very handy. If it's a recompile for a new release, maybe not so much. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
