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Date: Tue, 27 Dec 2005 18:39:05 +0100
From: Pascal Obry <pascal@obry.net>
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To: Craig Carey <research@ijs.co.nz>
Subject: Re: The GNU Ada compiler
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Date: 2005-12-27T18:39:11+01:00
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Craig Carey a �crit :
> When I compile 53 Ada files then I get these timing results:
> 
>   (1) GNAT 3.15p for NT :  1min42sec, 1m34s. The average = 98 secs.
>    The output file "tp-model2.o" is of size 1.12 MB.
> 
>   (2) The new AdaCore GNAT GPL 2005 compiler: 14 minutes 10 seconds
>    (=850 secs)
>    The output file "tp-model2.o" is of size 1.55 MB, which is 38.55%
>    larger.

I can't comment about the timing, but note that 3.15p is based on GCC
2.8.1 where GNAT GPL is based on GCC 3.x. The new GCC backend is known
to be slower, but also to generate better optimized code.

Pascal.

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