[Qemu-devel] Register usage statistics?

[Benjamin Ylvisaker]

I am working on a project for which I'd like to gather statistics about 
register usage.  (For example, distributions of degree-of-use and dynamic 
lifetimes of register-values.)  Is QEMU a good tool for doing this kind of 
work?  Has anyone else done this?  I looked at the tracing available in QEMU 
and it seems to be mostly for higher level things like memory accesses, 
function calls, basic block executions, etc.  If it matters, I am currently 
working in Ubuntu running in a VM on OS X and using the x86_64-linux-user 
target.

Thanks,
Ben