As I noted a long time ago in the comment on fixed_reg_p, the real
problem with saving fixed/global regs is that exception frame
unwinding might restore them. So don't emit eh_frame info for any
such reg, and the unwinder won't restore them.
Also, tidy rs6000_savres_strategy. Delaying some check
On Mon, Mar 21, 2016 at 9:08 AM, Alan Modra wrote:
> As I noted a long time ago in the comment on fixed_reg_p, the real
> problem with saving fixed/global regs is that exception frame
> unwinding might restore them. So don't emit eh_frame info for any
> such reg, and the unwinder won't restore th
