clobber CC for arithmetic instructions

[Hans-Peter Nilsson]

On Fri, 12 Aug 2011, Hans-Peter Nilsson wrote:
> On Fri, 12 Aug 2011, Rohit Arul Raj wrote:
> Assuming that you can indeed emit reasonable code for compares
> and conditional branches without the "CCR register" set to the
> do-not-update state, I'd suggest you implement that

Sorry for the miswrite: I meant 'without the "CCR register" set
to the always-update state' (with the "CCR register" constantly
set to the do-not-update state).

brgds, H-P