Add multilib config for powerpc-xilinx-eabi

[Michael Eager]

Michael Eager wrote:
> David Edelsohn wrote:
>> On Wed, Apr 22, 2009 at 8:35 PM, Michael Eager <eager@eagercon.com> 
>> wrote:
>>> Add multilib configuration for powerpc-xilinx-eabi.
>>> Tested with --target=powerpc-eabisim.
>>>
>>>
>>> 2009-04-22  Michael Eager <eager@eagercon.com>
>>>
>>>        * config/rs6000/t-xilinx: New, multilib for Xilinx PPC with
>>>        single/double precision FPU.
>>>        * config.gcc: Replace t-ppcgas & t-ppccomm with t-xilinx for
>>>        powerpc-xilinx-eabi.
>>
>> Michael,
>>
>> I am concerned about the direction this patch is taking Xilinx
>> support.  The patch probably is correct, but this patch is duplicating
>> a lot of t-ppcgas and t-ppccomm instead of factoring out the changes
>> for t-xilinx.  The problem is future maintenance.  If someone needs to
>> fix something in t-ppcgas or t-ppccomm in the future, they may not
>> notice to check t-xilinx and change t-xilinx as well.  t-xilinx also
>> loses on the common testing.
> 
> Ok, I'll look at making t-xilinx just override or augument
> t-ppcgas & t-ppccomm.

Revised patch attached.


-- 
Michael Eager	 eager@eagercon.com
1960 Park Blvd., Palo Alto, CA 94306  650-325-8077
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