[Bug libfortran/58020] Code for handling IEEE exceptions

["fxcoudert at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58020

Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> changed:

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                 CC|                            |fxcoudert at gcc dot gnu.org
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--- Comment #13 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> ---
I may have a bit of time in November and December to look at this. I actually
had started implementing the IEEE modules in gfortran back in 2008-2009, but
never got too far (I was unclear, back then, on the exact requirements for
things like constant folding… some interps have made clear that our job is
actually easier than I thought back then).

So, a few questions to Fred and Richard:

 0. Thanks for contributing your work to our open-source effort!
 1. What is the current status of your code w.r.t. the IEEE modules? Do you
have full coverage? Full test coverage? Does it depend on 32 vs 64-bit?
 2. Although you don't plan to support other architectures than i386/x86_64, we
have to think about it. The current approach does not seem to lend itself to
writing new ports easily. How do you think we could better insulate the
processor-specific code from the higher-level IEEE modules themselves?

I have started reading the code, but your answers would be very much
appreciated!
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Subject: [Bug middle-end/58479] [4.9 Regression] slow var-tracking on x86_64-linux at -O1 (and above) with -g, but checking disabled
Date: Tue, 05 Nov 2013 13:57:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idX479

Richard Biener <rguenth at gcc dot gnu.org> changed:

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