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Re: Performance optimizations for Intel Core 2 and Core i7 processors
- From: Maxim Kuvyrkov <maxim at codesourcery dot com>
- To: Jack Howarth <howarth at bromo dot med dot uc dot edu>
- 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: Tue, 17 Aug 2010 17:31:55 +0400
- Subject: Re: Performance optimizations for Intel Core 2 and Core i7 processors
- References: <4BF0E5E9.firstname.lastname@example.org> <20100813194046.GA1802@bromo.med.uc.edu>
On 8/13/10 11:40 PM, Jack Howarth wrote:
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
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.
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.
We will start posting patches very soon. Bernd Schmidt has almost
finished pipeline model for Core 2/i7, so that will be the first piece
of work we'll post for upstream review.
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