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Re: [Fwd: Current state of MIPS16 support?]

To: "Dominic Sweetman" <dom@algor.co.uk>
Subject: Re: [Fwd: Current state of MIPS16 support?]
From: cgd@broadcom.com
Date: 06 Jun 2002 08:13:14 -0700
Cc: "Eric Christopher" <echristo@redhat.com>, "Johannes Stezenbach" <js@convergence.de>, gcc@gcc.gnu.org, linux-mips@oss.sgi.com, sde@algor.co.uk
In-reply-to: "Dominic Sweetman"'s message of "Thu, 6 Jun 2002 10:14:33 +0100 (BST)"
References: <3CBFEAA9.9070707@algor.co.uk> <15566.28397.770794.272735@gladsmuir.algor.co.uk> <1022870431.3668.19.camel@ghostwheel.cygnus.com> <15614.12481.424601.806779@gladsmuir.algor.co.uk> <mailpost.1023291613.28112@news-sj1-1> <yov5n0u8c401.fsf@broadcom.com> <200206060914.KAA03263@mudchute.algor.co.uk>
Sender: owner-linux-mips@oss.sgi.com
At Thu, 6 Jun 2002 10:14:33 +0100 (BST), Dominic Sweetman wrote:
> Difference in perception here.

Noted.


> Up to and including the 2.96+ release we currently work with, no GCC
> version we've taken on has been fit for use by our MIPS customers
> without a large number of fixes, including significant changes to
> nominally non-machine-dependent code.
>
> If you experienced a big improvement in quality on moving to some more
> recent version, I'd love to know and that's worth telling everyone.
> 
> But if you're saying "it's always been more or less all right" then we
> are bound to suspect you're not looking hard enough...

"I don't know."  I didn't really spend a _lot_ of time staring at the
gnu toolchain until about 2 or 3 years ago (mips tools, 2 or so years
8-).  Before that, i relied on tools that others had massaged ... and
invariably, yes, they did have at least a few "important" bug fixes
(often pulled in from later development versions of the tools).  I
think even going back 2 and change years, we had some problems with
the versions of gcc at that time, and, for some sets of compile flags
(for us, -membedded-pic) a _lot_ of problems with binutils.

As of gcc 3.0.4 and w/ binutils 2.12.1 (with patches to each, but
generally not bug-fixes .... though we undoubtedly still have a few),
at least for us, they seem to work well for linux and for some amount
of stand-alone embedded development work.

I wouldn't disagree, BTW, that the current tools for mips seem to have
some shortcomings.  I also wouldn't claim that we've comprehensively
tested the tools.  8-)


I think the goal of improving test suites to show additional bugs is a
very good one.  Personally, I've been trying to make sure regression
tests get added for bugs we find & fix, but there will always be more
bugs to find.



chris


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