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List:       gmp-discuss
Subject:    Re: Benchmarks with and without compiler optimizing
From:       Hans_Åberg <haberg-1 () telia ! com>
Date:       2019-10-29 16:42:42
Message-ID: 817A6398-A78A-42B3-98A2-56F8173CC28D () telia ! com
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> On 29 Oct 2019, at 16:18, Torbjörn Granlund <tg@gmplib.org> wrote:
> 
> Hans Åberg <haberg-1@telia.com> writes:
> 
> But that is not somebody has benchmarked? — Somebody tested human vs
> computer optimization, and found that computers could do better, but
> then there might be a tradeoff with reliability.
> 
> You seem to be talking about two separate issues.  One is what happens
> with an asm enabled build with no -O for the C code, and the other is
> whether our asm code is better or worse than compiler generated code
> (presumably with compiler optimisation turned on).

I only had in mind the same language, C in this case, and only for the library, not \
external code, compared with rewritten by hand for optimizing and doing it \
automatically with the compiler. Perhaps the former is not used much these days. 


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