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Re: i686 elf return values

From: Nathan Sidwell <nathan at acm dot org>
To: "Maciej W. Rozycki" <macro at codesourcery dot com>
Cc: Jeff Law <law at redhat dot com>, Bernd Schmidt <bernds at codesourcery dot com>, Gabriel Dos Reis <gdr at integrable-solutions dot net>, gcc at gcc dot gnu dot org
Date: Mon, 12 Aug 2013 08:32:35 -0400
Subject: Re: i686 elf return values
References: <CAAiZkiDsAo_UWgViybVmtZCjNcUbenDC=R+B38_7k8rN03bz2A at mail dot gmail dot com> <alpine dot DEB dot 1 dot 10 dot 1308112338060 dot 8514 at tp dot orcam dot me dot uk>

On 08/12/13 08:07, Maciej W. Rozycki wrote:

  My conclusion therefore is i386/ELF was not maintained, as far as the
return convention is concerned, beyond r34721 and it looks to me like it
should have been converted with r45726 to make use of
ix86_return_in_memory just like generic i386, perhaps with a special
exception for complex types (although as I noted above, this exception was
probably a mistake from the beginning).

  Any thoughts?

Thanks for digging into this. It does look like the ABI is accidental, andi686elf.h should not define SUBTARGET_RETURN_IN_MEMORY.


nathan

References:
- Re: i686 elf return values
  - From: Gabriel Dos Reis
- Re: i686 elf return values
  - From: Maciej W. Rozycki

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