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Re: RFA: give the return column a size (Was: Re: RFA: Use
- From: Joern Rennecke <joern dot rennecke at superh dot com>
- To: wilson at tuliptree dot org (Jim Wilson)
- Cc: rsandifo at redhat dot com (Richard Sandiford), joern dot rennecke at superh dot com (Joern Rennecke), gcc-patches at gcc dot gnu dot org
- Date: Tue, 15 Jul 2003 23:07:24 +0100 (BST)
- Subject: Re: RFA: give the return column a size (Was: Re: RFA: Use
> There is the possibility of a different problem here, where the
> DWARF_FRAME_RETURN_COLUMN maps to a known register which is a different
> size than than return address. In that case, we would have to ignore
> DWARF_FRAME_RETURN_COLUMN in the main loop, and always provide a value
> after the loop. In that case, we probably do have to use
> RETURN_ADDR_RTX like Joern suggested, and then use Pmode if
> RETURN_ADDR_RTX is not defined.
I'm not sure what that means with respect to the patch. Should I apply the
save_mode = Pmode variant now, and we keep the above scheme as a backup plan
in case we find such a problem, or should I make such a patch now?