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Date: Fri, 27 Feb 2004 12:06:40 -0500
From: Hyman Rosen <hyrosen@mail.com>
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Subject: Re: left-to-right (was In-Out Parameters for functions)
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Date: 2004-02-27T12:06:40-05:00
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Stephen Leake wrote:
> Ok. That is a good example.
> 
> So, Hymen; we now have (at least) two good examples of optimizations
> that are useful, but would not be possible if the language required
> right-to-left parameter evaluation.
> 
> Do you agree the cost of changing is to right-to-left is not worth the
> gain?

That's "Hyman". I don't think the array index case is a good
counterexample; compilers are now very good at dealing with
loop induction variables, and I doubt that generated code for
this would be affected by l-to-r. RB's case was better.

Whether such cases are sufficient is a matter of judgement,
but the existence of a good optimization example means that
l-to-r will never be adopted (not that there was a chance
anyway).