PATCH: [darwin] - add code to recognize macho lo-sum addresses

[Fariborz Jahanian]

FSF3.4 has a chunk of code missing in routine legitimate_offset 
address_p to recognize lo-sum address
patterns. This was uncovered by our testing of SPEC. with -mpowerpc64. 
This patch has been bootstrapped and
dejagnu tested on Darwin-powerpc, as well as SPEC with -O3 -mpowerpc64 
-mdynamic-nopic ( which first uncovered
the bug).

OK. to check into the FSF3.4 branch?


- Fariborz Jahanian
   fjahanian@apple.com


ChangeLog:

2003-12-19  Fariborz Jahanian <fjahanian@apple.com>
         * config/rs6000/rs6000.c (legitimate_lo_sum_address_p): Add 
code to
         recognize macho-style lo_sum adrress patterns.


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