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Re: [RFC] Cleanup DW_CFA_GNU_args_size handling
- From: Denis Chertykov <chertykov at gmail dot com>
- To: Richard Henderson <rth at redhat dot com>
- Cc: Georg-Johann Lay <avr at gjlay dot de>, GCC Patches <gcc-patches at gcc dot gnu dot org>, bernds at codesourcery dot com, iant at google dot com
- Date: Mon, 1 Aug 2011 23:52:37 +0400
- Subject: Re: [RFC] Cleanup DW_CFA_GNU_args_size handling
- References: <4E36D44A.6020607@redhat.com> <4E36F3AF.3070300@gjlay.de> <4E36F48F.4040106@redhat.com>
2011/8/1 Richard Henderson <rth@redhat.com>:
> On 08/01/2011 11:42 AM, Georg-Johann Lay wrote:
>> Is there a specific reason not to define
>> ACCUMULATE_OUTGOING_ARGS on AVR?
I havn't define ACCUMULATE_OUTGOING_ARGS because AVR have a very small
displacement for memory addressing (63 bytes) and I think that better
to have a minimal possible frame size (because of difficult addressing
of a local variables outside of fp+63 boundary).
Generally, ACCUMULATE_OUTGOING_ARGS enlarge the frame size.
Denis.
PS: I didn't try ACCUMULATE_OUTGOING_ARGS for AVR. May be results will
be better than I think.