Rafael Espindola 6d53fded19 Fix eabi calling convention when a 64 bit value shadows r3.
Without this what was happening was:

* R3 is not marked as "used"
* ARM backend thinks it has to save it to the stack because of vaarg
* Offset computation correctly ignores it
* Offsets are wrong

llvm-svn: 110446
2010-08-06 15:35:32 +00:00
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