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Date: Thu, 23 Nov 2000 16:44:36 +0100
From: Andi Kleen <ak@suse.de>
To: Linus Torvalds <torvalds@transmeta.com>
Cc: Andries.Brouwer@cwi.nl, alan@lxorguk.ukuu.org.uk,
        linux-kernel@vger.kernel.org
Subject: Re: {PATCH} isofs stuff
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In-Reply-To: <Pine.LNX.4.10.10011230727310.7927-100000@penguin.transmeta.com>; from torvalds@transmeta.com on Thu, Nov 23, 2000 at 07:37:27AM -0800
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On Thu, Nov 23, 2000 at 07:37:27AM -0800, Linus Torvalds wrote:
> > I have seen that there were discussions on the right compiler to use.
> > Is 2.95.2 wrong? Have other things to do tomorrow, so it will be
> > 24 hours before I can look at this again.
> 
> 2.95.2 should have been reasonably ok, but egcs-2.91.66 is probably
> considered the most stable compiler right now.
> 
> Note that gcc has always had problems with "long long" variables. Very few
> people use them as they aren't standard, and the code generation can be
> much trickier, so bugs are much more likely. This (along with performance
> issues) was why I refused the original LFS patches - they put "long long"
> code all over the place.

gcc 2.95.2 seems to have more problems with long long the egcs 1.1, I have
at least one test case where it miscompiles a variable long long shift.


-Andi
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