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Re: 4.3.0 strange problem with computation and optimization

From: "Dario Saccavino" <kathoum at gmail dot com>
To: "Tom Browder" <tom dot browder at gmail dot com>
Cc: "Andrew Haley" <aph at redhat dot com>, "Lasse Kliemann" <lasse-list-gcc-2008 at mail dot plastictree dot net>, gcc-help at gcc dot gnu dot org
Date: Thu, 13 Mar 2008 11:36:30 +0100
Subject: Re: 4.3.0 strange problem with computation and optimization
References: <20080312173125.GE2471@lasse.mail.plastictre.net> <47D813F5.2060301@redhat.com> <47D8143F.30607@redhat.com> <8bc817ee0803130330o2f0f03c3q75fd535f640fc1c1@mail.gmail.com>

> > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=323
>
>
> Did all lose interest?  Or is there a plan to do some kind of fix?
>

I haven't found any comment on the effect of sse/sse2 on this "bug".

Anybody knows if using -msse2 -mfpmath=sse can help obtain a better
conformant assembly? The sse regs should have the correct precision
(32 for float, 64 for double), so maybe part of the undesired
behaviour can be avoided.

    Dario

Follow-Ups:
- Re: 4.3.0 strange problem with computation and optimization
  - From: Ian Lance Taylor
- Re: 4.3.0 strange problem with computation and optimization
  - From: Lasse Kliemann

References:
- 4.3.0 strange problem with computation and optimization
  - From: Lasse Kliemann
- Re: 4.3.0 strange problem with computation and optimization
  - From: Andrew Haley
- Re: 4.3.0 strange problem with computation and optimization
  - From: Andrew Haley
- Re: 4.3.0 strange problem with computation and optimization
  - From: Tom Browder

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