Path: utzoo!dptcdc!jarvis.csri.toronto.edu!mailrus!ncar!ames!oliveb!sun!chiba!khb
From: khb@chiba.Sun.COM (chiba)
Newsgroups: comp.lang.fortran
Subject: Re: f8x impact on debugging (was: Re: yes vs. no on f8x)
Message-ID: <99502@sun.Eng.Sun.COM>
Date: 18 Apr 89 00:35:15 GMT
References: <12170@lanl.gov> <12179@lanl.gov>
Sender: news@sun.Eng.Sun.COM
Reply-To: khb@sun.UUCP (chiba)
Organization: Sun Microsystems, Mountain View
Lines: 19

In article <12179@lanl.gov> dph@lanl.gov (David Huelsbeck) writes:
>
>Since deprecation etc. is now gone from the draft any of the old hacks
>that improved efficiency should still work.  Further more, no one is
>implying that they're going to be taken away any time soon.  Are there
>any additions that should impact the efficiency of codes that don't use
>them?  I have a copy of the draft but I don't know as much about 
>optimization and vectorization as Jim and Co.

Some of the old hacks cause current optimizing compilers grief. If one
has lots of equivalences, it may be hard to do certain types of code
motion and loop transformations...due to the increased complexity of
data dependency analysis.

Cheers.

Keith H. Bierman          *My thoughts are my own. Only my work belongs to Sun*
It's Not My Fault          
    ---- I Voted for Bill & Opus