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Re: [PATCH 2.95.3 - WITHDRAWN] Fix powerpc-wrs-vxworks eabi backw ards incompatibility.
- To: David Korn <dkorn at pixelpower dot com>
- Subject: Re: [PATCH 2.95.3 - WITHDRAWN] Fix powerpc-wrs-vxworks eabi backw ards incompatibility.
- From: David Edelsohn <dje at watson dot ibm dot com>
- Date: Thu, 14 Dec 2000 13:11:29 -0500
- cc: "'Bernd Schmidt'" <bernds at redhat dot com>, "Gcc-Patches (E-mail)" <gcc-patches at gcc dot gnu dot org>, "Mike Stump (E-mail)" <mrs at windriver dot com>, "'Geoff Keating'" <geoffk at geoffk dot org>
>>>>> David Korn writes:
>> Given that the changes pervade rs6000.c and rs6000.md, I do not
David> Minor clarification: The changes to rs6000.md are for the longcall patch
David> and the CALL_V4_ fp args flag. No changes are needed for the vxcompat patch.
rs6000.c would need to be touched for the DFmode/DImode fix. That
patch might be small enough that it would not be a burden to maintain.
What is impractical is to replicate ALL gcc-2.7.2 argument handling,
including stdsrg/varargs.
David> The
David> one slight qualm I have about it is that we're running awfully short on
David> target flag bit definitions for the rs6k....
Yes, that is one of the reasons for my concern. The rs6000 port
is running short or already has run out of target flags, constant and
extra constraint flags, etc.
David