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Re: -ffast-math and floating point reordering

From: Richard Henderson <rth at redhat dot com>
To: Joe Buck <Joe dot Buck at synopsys dot COM>
Cc: law at redhat dot com, Richard Guenther <rguenth at tat dot physik dot uni-tuebingen dot de>, Diego Novillo <dnovillo at redhat dot com>, "gcc at gcc dot gnu dot org" <gcc at gcc dot gnu dot org>
Date: Fri, 26 Mar 2004 14:27:13 -0800
Subject: Re: -ffast-math and floating point reordering
References: <4064721A.6060905@tat.physik.uni-tuebingen.de> <200403261837.i2QIbgbX016412@speedy.slc.redhat.com> <20040326105057.A6362@synopsys.com>

On Fri, Mar 26, 2004 at 10:50:57AM -0800, Joe Buck wrote:
> But if that idea is used, then the C and C++ front ends would
> have to put a PLUS_EXPR around *every* expression.

No, what was meant was that one of the flag bits on the PLUS_EXPR
would allow or disallow the reassociation.  Likely allow, since
that would be safest compatibility-wise with exating front-ends.

r~

References:
- Re: -ffast-math and floating point reordering
  - From: Richard Guenther
- Re: -ffast-math and floating point reordering
  - From: law
- Re: -ffast-math and floating point reordering
  - From: Joe Buck

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