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Re: Problems with sibling calls

From: Georg-Johann Lay <avr at gjlay dot de>
To: Ulrich Weigand <uweigand at de dot ibm dot com>
Cc: gcc at gcc dot gnu dot org
Date: Mon, 01 Jun 2009 16:02:32 +0200
Subject: Re: Problems with sibling calls
References: <200905301643.n4UGh0ae032149@d12av02.megacenter.de.ibm.com>

Ulrich Weigand schrieb:

Georg-Johann Lay wrote:
I'd like to support sibling calls for a target where function args can be passed in call-saved registers, namely AVR.
The s390 back-end already has the very same issue.  You may want to have
a look at config/s390/s390.c:s390_call_saved_register_used and how it is
used by s390_function_ok_for_sibcall.

Hi Ulrich,

thank's much for this hint. It's the missing link I was after.

Georg-Johann

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