On 02/25/2010 02:04 PM, Michael S. Tsirkin wrote:
Clobbering memory
> is not necessary since we are only caring about blocking assignments of
> "env", which is by definition in a register
Then I think you should add that as a clobber. Otherwise what prevents the
compiler from reordering this asm wrt assignments?
That old-style asms block scheduling of _anything_ across it (like
"barrier()" in the Linux kernel). So, it is actually slightly stricter
than what was there before.
I should have made clear in the commit message that this is the only
change wrt hostregs_helper.h.
Paolo
