Newsgroups: comp.lang.c
Path: utzoo!henry
From: henry@utzoo.uucp (Henry Spencer)
Subject: Re: portability
Message-ID: <1989Jan23.190747.8650@utzoo.uucp>
Organization: U of Toronto Zoology
References: <1354@tank.uchicago.edu> <3377@arcturus> <YXnd7fy00UkaI3Om9C@andrew.cmu.edu> <908@ubu.warwick.UUCP> <9414@smoke.BRL.MIL> <1989Jan20.055826.26116@ziebmef.uucp> <9479@smoke.BRL.MIL>
Date: Mon, 23 Jan 89 19:07:47 GMT

In article <9479@smoke.BRL.MIL> gwyn@brl.arpa (Doug Gwyn (VLD/VMB) <gwyn>) writes:
>[volatile]  Unoptimized generated machine code would naturally do
>that, and non-aggressive optimizations (such as Dennis originally put
>into his PDP-11 compiler) would preserve this property...

Actually, some of the things that ended up in his peephole optimizer at
some point broke said property, although not severely and not often.
-- 
Allegedly heard aboard Mir: "A |     Henry Spencer at U of Toronto Zoology
toast to comrade Van Allen!!"  | uunet!attcan!utzoo!henry henry@zoo.toronto.edu