portability

[Henry Spencer]

In article <9479 at smoke.BRL.MIL> gwyn at 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 at zoo.toronto.edu