1 Oct
2011
1 Oct
'11
8:48 a.m.
Le 30/09/2011 09:21, Simon Schwarz a écrit :
On 09/29/2011 06:14 PM, Andreas Bießmann wrote: [SNIP]
Simon, who has just finished his bachelor thesis did this test for me (thanks to this way ...). It seems using more register for ldmia/stmia does _not_ improve the copy time that much. Simon measured 10.8 ms for r9-r10 and 10.65 ms for r3-r10 (unfortunately I do not know which system he tested, but I guess devkit8000).
best regards
Andreas Bießmann
Yes, devkit8000.
Regards Simon
Thanks to both of you. I'd somehow expected there not to be a great increase as the true limit is bus width.
So let us stick with two registers and avoid register pushes/pops.
Amicalement,
--
Albert.