Re: [Qemu-devel] [PATCH 0/2] simplify global register save/restore

[Paul Brook]

> Since b567b38 (target-arm: remove T0 and T1, 2009-10-16) the only global
> register that is actually used is AREG0, so the complexity of
> hostregs_helper.h is unwarranted.
> 
> Let's just say that env should be the only global register.  AREG1 and
> AREG2 in principle could still be used to work around bad register
> allocation in GCC, so I'm leaving them in dyngen-exec.h.

I think AREG[12] should be removed too. If we aren't saving them then they 
can't be safely used.

Paul