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Re: GCC floating point usage
- From: Mark Mitchell <mark at codesourcery dot com>
- To: Mike Stump <mrs at apple dot com>, Geoff Keating <geoffk at geoffk dot org>
- Cc: "steby at enea dot se" <steby at enea dot se>, "gcc at gcc dot gnu dot org" <gcc at gcc dot gnu dot org>
- Date: Wed, 16 Oct 2002 11:11:53 -0700
- Subject: Re: GCC floating point usage
Geoff --
OK, so we've had some more discussion on the list.
Driving forward, we're still at the point where we need a decision on
whether you will accept a patch to implement the feature as specified,
if clean, etc.
So, will you?
If so, why is it that simply turning off the bits in the MD that allow
for these register->register copies is wrong? I can see that it might
not result in optimal code in that in a function which is already doing
FP stuff at the source level, you might as well do FP moves -- but
nobody has yet proposed a way of doing better that as even close to being
as simple and reliable as Zack's patch.
--
Mark Mitchell mark@codesourcery.com
CodeSourcery, LLC http://www.codesourcery.com