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Re: RFC: DW_CFA_offset_range
- From: Hans-Peter Nilsson <hp at bitrange dot com>
- To: Jakub Jelinek <jakub at redhat dot com>
- Cc: jason at redhat dot com, <gcc at gcc dot gnu dot org>
- Date: Sat, 12 Jul 2003 12:14:42 -0400 (EDT)
- Subject: Re: RFC: DW_CFA_offset_range
On Fri, 11 Jul 2003, Jakub Jelinek wrote:
> What do you think about saving some .eh_frame bytes by introducing
> DW_CFA_offset_range (or DW_CFA_GNU_offset_range if not suitable
> for official range), which would take 3 args:
An excellent idea. For special (usual) cases, you might be able
to save one of those three [us]lebs arguments too if you want,
by allocating e.g. DW_CFA_GNU_offset_range_0..15.
> I think even on non-s390* it is pretty common that 2 or more registers
> are saved in consecutive stack block.
And if they don't, they should reconsider their suboptimal ABI. :-)
brgds, H-P