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Re: Performance optimizations for Intel Core 2 and Core i7 processors
- From: Jack Howarth <howarth at bromo dot med dot uc dot edu>
- To: Maxim Kuvyrkov <maxim at codesourcery dot com>
- Cc: GCC <gcc at gcc dot gnu dot org>, gcc-patches <gcc-patches at gcc dot gnu dot org>, "H.J. Lu" <hjl dot tools at gmail dot com>
- Date: Fri, 13 Aug 2010 15:40:46 -0400
- Subject: Re: Performance optimizations for Intel Core 2 and Core i7 processors
- References: <4BF0E5E9.3010405@codesourcery.com>
On Mon, May 17, 2010 at 10:44:57AM +0400, Maxim Kuvyrkov wrote:
> CodeSourcery is working on improving performance for Intel's Core 2 and
> Core i7 families of processors.
>
> CodeSourcery plans to add support for unaligned vector instructions, to
> provide fine-tuned scheduling support and to update instruction
> selection and instruction cost models for Core i7 and Core 2 families of
> processors.
>
> As usual, CodeSourcery will be contributing its work to GCC. Currently,
> our target is the end of GCC 4.6 Stage1.
>
> If your favorite benchmark significantly under-performs on Core 2 or
> Core i7 CPUs, don't hesitate asking us to take a look@it.
>
> We appreciate Intel sponsoring this project.
Maxim,
Do you have any updates on the progress of this project? Since
it has been proposed to default intel darwin to -mtune=core2, it
would be very helpful to be able to test (benchmark) any proposed
changes on x86_64-apple-darwin10 with gcc trunk. Thanks in advance.
Jack
>
>
> Thank you,
>
> --
> Maxim Kuvyrkov
> CodeSourcery
> maxim@codesourcery.com
> (650) 331-3385 x724