This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: Omitted conversion float -> double in x86 back-end

From: Joe Buck <Joe dot Buck at synopsys dot COM>
To: Roberto COSTA <roberto dot costa at st dot com>
Cc: Michael Matz <matz at suse dot de>, Richard Guenther <richard dot guenther at gmail dot com>, GCC mailing list <gcc at gcc dot gnu dot org>
Date: Tue, 21 Nov 2006 09:49:08 -0800
Subject: Re: Omitted conversion float -> double in x86 back-end
References: <456317B2.8070106@st.com> <84fc9c000611210825p655ce423ncc1ac1dd4754834e@mail.gmail.com> <Pine.LNX.4.64.0611211801510.29962@wotan.suse.de> <45633395.8000502@st.com>

On Tue, Nov 21, 2006 at 06:12:53PM +0100, Roberto COSTA wrote:
> Hi Michael,
> too late, I've filed the report a few minutes ago.
> By the way, if I want to bypass the problem without paying any 
> performance penalty, it is sufficient that I introduce a temporary 
> variable in the C source.

No, that's not sufficient; you get different results depending on
whether the temporary gets spilled to memory or not.

References:
- Omitted conversion float -> double in x86 back-end
  - From: Roberto COSTA
- Re: Omitted conversion float -> double in x86 back-end
  - From: Richard Guenther
- Re: Omitted conversion float -> double in x86 back-end
  - From: Michael Matz
- Re: Omitted conversion float -> double in x86 back-end
  - From: Roberto COSTA

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]