On 5/20/10 4:04 PM, Steven Bosscher wrote:
On Mon, May 17, 2010 at 8:44 AM, Maxim Kuvyrkov<ma...@codesourcery.com> 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 at it.
I'd like to ask you to look at ffmpeg (missed core2 vectorization
opportunities), polyhedron (PR34501, like, duh! :-), and Apache
benchmark (-mtune=core2 results in lower scores).
You could check overall effects on an openly available benchmark suite
such as http://www.phoronix-test-suite.com/
Thank you for the pointers!
--
Maxim Kuvyrkov
CodeSourcery
ma...@codesourcery.com
(650) 331-3385 x724
