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Re: Core 2 and Core i7 tuning

From: "H.J. Lu" <hjl dot tools at gmail dot com>
To: Bernd Schmidt <bernds at codesourcery dot com>
Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>, Maxim Kuvyrkov <maxim at codesourcery dot com>, Paul Brook <paul at codesourcery dot com>
Date: Mon, 23 Aug 2010 08:39:57 -0700
Subject: Re: Core 2 and Core i7 tuning
References: <4C6EE072.4070802@codesourcery.com> <AANLkTi=qrPZFQgQQfeCGM31iYzedwpt0f2JKVV_BZfQK@mail.gmail.com> <4C728DC4.6050402@codesourcery.com>

On Mon, Aug 23, 2010 at 8:03 AM, Bernd Schmidt <bernds@codesourcery.com> wrote:
> On 08/23/2010 04:59 PM, H.J. Lu wrote:
>
>> Here are my results on Core 2 and Core i7 running Fedora 13. There are
>> many regressions and a few improvements.
>
> What compilation flags were you using?
>
>

I use

Base: -ffast-math -mfpmath=sse -O2 -msse2
Peak: -ffast-math -mfpmath=sse -O3 -funroll-loops -msse2

and add -mtune=generic/-mtune=core2/corei7.

-- 
H.J.

References:
- Core 2 and Core i7 tuning
  - From: Bernd Schmidt
- Re: Core 2 and Core i7 tuning
  - From: H.J. Lu
- Re: Core 2 and Core i7 tuning
  - From: Bernd Schmidt

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