That's weird, because that is one of the things that an *optimizing*
compiler tends to notice: hey, I tried to optimize this, and when I did I
optimized it right out of existence!

Have you tested with full optimization on?

(My remarks are general in nature and not specific to this compiler.)

Charles

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On
Behalf Of Greg Shirey
Sent: Wednesday, October 01, 2014 2:00 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Enterprise COBOL v5.1 Implemented?

John, 

We're almost to the point to begin trying to measure performance
improvement, so if I find anything significant I'll post it later, but have
you seen the SHARE presentation from Tom Ross where he documents how
performance improvements are achieved?  It's informative, and can help guide
you in what to look for.    

As far as other glitches, I posted a message yesterday about the absence of
IGYOP messages, and specifically IGYOP3091-W.  In further experimenting, we
have discovered that it's not just that the message isn't being produced,
it's that the code that can never be executed is not being discarded as it
was in COBOL 4.2.  So, there's no message about it because the compiler is
no longer doing what it used to do.  We intend to open a PMR in the morning
and see what response that yields. 

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