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From: "Luke A. Guest" <laguest@archeia.com>
Newsgroups: comp.lang.ada
Subject: Re: Not good for Ada endorsement
Date: Thu, 8 Jul 2021 11:51:03 +0100
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On 08/07/2021 11:42, Jeffrey R. Carter wrote:

Here's the playlist 
https://youtube.com/playlist?list=PLF2KJ6Gy3cZ5Er-1eF9fN1Hgw_xkoD9V1 the 
second video is where he sets up Python, C# and C++.

> Compiling the original code with
> 
> gnatmake prime_sieve.adb
> 
> gives 408 passes in 5 seconds.
> 
> Making the changes listed above (I used Interfaces.Integer_32) and 
> compiling with
> 
> gnatmake -O3 prime_sieve.adb
> 
> (to ensure that no checks fail) gives 2087 passes in 5 seconds, for a 
> factor of 5.1.

He shows the C++ jumping from 4645 (https://youtu.be/D3h62rgewZM?t=1246) 
to 7,436 (https://youtu.be/D3h62rgewZM?t=1306) passes going from 32 to 
64 bit.

He also uses clang's -Ofast option to compile for speed over size.