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From: Tim Behrendsen <tim@airshields.com>
Subject: Re: C is 'better' than Ada because...
Date: 1996/08/06
Message-ID: <Pine.A32.3.91.960806132022.73036A-100000@wc.airshields.com>#1/1
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Date: 1996-08-06T00:00:00+00:00
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On Tue, 6 Aug 1996, Richard G. Hash wrote:

> In comp.lang.ada you write:
> > if ((array[++n] = GetValue(arg)) != 0) {
> >     ....
> > v.s. a typical non-C language ...
> > 
> > n = n + 1;
> > array[n] = GetValue(arg);
> > if (array[n] != 0) {
> >     ...
> > }
> > Now, which is easier to optimize?  (more snip)
> 
> Do you actually use a modern C compiler that optimizes these two
> constructs differently? I've used recent C compilers on half a dozen
> platforms, and find it really difficult to believe there is any
> difference...
> 
> What compiler/platform are you using?

The original post has been corrupted somewhat; this was an example
of how C's syntax provides some dataflow hints to the compiler for
optimization.  Originally I said "A modern compiler will probably
produce the same code", but that part got lost way up in the tree
somewhere.

-- Tim Behrendsen (tim@airshields.com)