[fedora-arm] ARM summit at Plumbers 2011

2011-08-24 Thread Luke Kenneth Casson Leighton
[apologies, trying again, after sending the requested "not-a-spammer" message.] On Tue, Aug 09, 2011 at 07:15:34PM +0100, Steve McIntyre wrote: >Hi folks, > >Following on from the founding of the cross-distro ARM mailing list, >I'd like to propose an ARM summit at this year's Linux Plumbers >confe

Re: [fedora-arm] ARM summit at Plumbers 2011

2011-08-24 Thread Bill Gatliff
Luke: Step back from the keyboard just a bit. :) It's true that the glass isn't completely full--- but it's pretty darned full! And we wouldn't be discussing the various GPL and other violations that you cite were it not for the overwhelming successes of Free Software, ARM, Linux, and Android.

Re: Performance degradation on g++ 4.6

2011-08-24 Thread Oleg Smolsky
On 2011/8/23 11:38, Xinliang David Li wrote: Partial register stall happens when there is a 32bit register read followed by a partial register write. In your case, the stall probably happens in the next iteration when 'add eax, 0Ah' executes, so your manual patch does not work. Try change add a

Re: Performance degradation on g++ 4.6

2011-08-24 Thread Xinliang David Li
On Wed, Aug 24, 2011 at 12:50 PM, Oleg Smolsky wrote: > On 2011/8/23 11:38, Xinliang David Li wrote: >> >> Partial register stall happens when there is a 32bit register read >> followed by a partial register write. In your case, the stall probably >> happens in the next iteration when 'add eax, 0A

Re: Performance degradation on g++ 4.6

2011-08-24 Thread Oleg Smolsky
On 2011/8/24 13:02, Xinliang David Li wrote: On 2011/8/23 11:38, Xinliang David Li wrote: Partial register stall happens when there is a 32bit register read followed by a partial register write. In your case, the stall probably happens in the next iteration when 'add eax, 0Ah' executes, so your

Re: Performance degradation on g++ 4.6

2011-08-24 Thread Xinliang David Li
Thanks. Can you make the test case a standalone preprocessed file (using -E)? David On Wed, Aug 24, 2011 at 2:26 PM, Oleg Smolsky wrote: > On 2011/8/24 13:02, Xinliang David Li wrote: >>> >>> On 2011/8/23 11:38, Xinliang David Li wrote: Partial register stall happens when there is a 3

Re: Performance degradation on g++ 4.6

2011-08-24 Thread Oleg Smolsky
Sure. I've just attached it to the bug. On 2011/8/24 14:56, Xinliang David Li wrote: Thanks. Can you make the test case a standalone preprocessed file (using -E)? David On Wed, Aug 24, 2011 at 2:26 PM, Oleg Smolsky wrote: On 2011/8/24 13:02, Xinliang David Li wrote: On 2011/8/23 11:38, Xin