On Mon, Mar 21, 2016 at 9:08 AM, Alan Modra <amo...@gmail.com> 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 them. > > Also, tidy rs6000_savres_strategy. Delaying some checks means we > won't iterate over regs quite so often. > > * config/rs6000/rs6000.c (rs6000_savres_strategy): Force inline > restoring when fixed_reg_p, but allow out-of-line or stmw save. > Check for user regs later to avoid unnecessary looping over regs. > Merge user reg check with non-saved reg check. Don't force > inline VR restore when static chain used. > (rs6000_frame_related): Omit eh_frame info for user regs when > saving. > (fixed_regs_p): Delete.
Okay. Thanks for cleaning this up and thanks for splitting this into multiple patches for review. - David
