Re: [arm-gnu] cs 2010q1 toolchain generates slower code than 2007q3?

• To: "Carlos O'Donell" <carlos@xxxxxxxxxxxxxxxx>
• Subject: Re: [arm-gnu] cs 2010q1 toolchain generates slower code than 2007q3?
• From: codecrumb <codecrumb@xxxxxxxxx>
• Date: Wed, 23 Jun 2010 00:23:14 -0700

As a test, I tried kernel compiles with both toolchains (both completed and
booted. compiled with -Os -mcpu=cortex-a8 -mtune=cortex-a8 -march=armv7-a).

End result, no real difference between the 2 kernels according to CoreMark.



On Tue, Jun 22, 2010 at 1:45 PM, Carlos O'Donell <carlos@xxxxxxxxxxxxxxxx>wrote:

> On 22/06/10 04:33 PM, Freddie Chopin wrote:
>
>> On 2010-06-22 09:20, codecrumb wrote:
>>
>>> So, you can see, I seem to be getting consistently slower results. Any
>>> suggestions would be appreciated.
>>>
>>
>> Rumor says that each new version of gcc is worse than the previous one...
>>
>> 4\/3!!
>>
>
> There might be single cases where the generated code is slower, but overall
> we see performance increases in Sourcery G++ over the releases.
>
> Sourcery G++: Spring 2010 Performance Improvements for Cortex-A8
> http://www.codesourcery.com/sgpp/spring2010_cortex_a8_performance.html
>
> Cheers,
> Carlos.
> --
> Carlos O'Donell
> CodeSourcery
> carlos@xxxxxxxxxxxxxxxx
> (650) 331-3385 x716
>

• References:
  • [arm-gnu] cs 2010q1 toolchain generates slower code than 2007q3?
    • From: codecrumb
  • Re: [arm-gnu] cs 2010q1 toolchain generates slower code than 2007q3?
    • From: Freddie Chopin
  • Re: [arm-gnu] cs 2010q1 toolchain generates slower code than 2007q3?
    • From: Carlos O'Donell

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