PATCH [mainline] Altivec PPC-DARWIN ABI Parameter Passing with Varargs

[Fariborz Jahanian]

This patch fixes couple of bugs in passing vectors to vararg functions 
in situations where
the vector need be passed in either GPR5-GPR8 or GPR9-GPR10. Patch 
targets the
32bit ABI problem (normal or mixed mode). David, could you see if this 
will impact
the AIX's 64bit ABI in any way, thanks. I have attached a crude test 
case for testing
a variety of scenarios. ppc-darwin bootstrap  dejagnu test pending.

- Fariborz Jahanian (fjahanian@apple.com)

OK for mainline?

2004-04-07  Fariborz Jahanian <fjahanian@apple.com>

         * config/rs6000/rs6000.c (rs6000_mixed_function_arg): Add
         new patterns for vector varargs going into GPRs.
         (function_arg): call rs6000_mixed_function_arg when vector
         varargs need to go into GPRs.


	
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