Re: [Patch PPC/Darwin] some tidy-ups for save_world (and a prelude to splitting it out of the rs6000 code).

[David Edelsohn]

On Sun, Dec 4, 2011 at 3:23 PM, Iain Sandoe
<develo...@sandoe-acoustics.co.uk> wrote:

gcc:

       * config/rs6000/rs6000.c (first_altivec_reg_to_save): Amend comment.
       (compute_vrsave_mask): Likewise.
       (rs6000_emit_prologue): Move update of VRSave mask to save_world()
       when that is in use.

libgcc:

       * config/rs6000/darwin-world.S (toplevel): Make it clear that
this function is
       not used for PPC64.  (save_world): Amend comments.  Update the VRsave
       mask to reflect the saved regs.
       (rest_world): Update comments, do not  clobber r10, do not use r8.
       (eh_rest_world_r10): Amend comments, do not use r8.
       (rest_world_eh_r7r8): Make local, move restore of CR and target address
       to end of routine, do not use r8.

> OK for trunk?

Okay.

It probably would be helpful to add a comment that rest_world_eh_r7r8
has "r8" in the name for backward compatibility.

Thanks, David