Re: [Qemu-devel] Profiling Qemu for speed?

[Jonas Maebe]

On 17 Apr 2005, at 12:27, Paul Brook wrote:

> Unfortunately it's not that simple. The push instruction may cause an
> exception. Whatever optimizations you apply you've got to make sure 
> that the
> guest state is still consistent when the exception occurs.

If we just concatenate the C code of the two procedures, won't gcc take 
care of that for us? Or could scheduling mess this up? Maybe there's a 
switch to avoid having it reschedule instructions in a way that side 
effects happen in a different order? (that would still give us the 
advantage of CSE and peephole optimizations)


Jonas