8 Dec
2010
8 Dec
'10
10:30 a.m.
Hi,
On Tue, Dec 7, 2010 at 9:15 PM, Ben Dooks ben-linux@fluff.org wrote:
[...]
Could you do what the original FP did, and start with units off and use the first use of $unit in the process to turn it on? Do things like NEON support this?
Actually, this is still done -- it's the same code since NEON and VFP use a common register file. The issue under discussion is that userspace can't detect whether units like these are active or not, and so can't make dynamic runtime decisions about whether to run accelerated code or not. (And also, whether this would actually be usefuil)
Cheers ---Dave