------- Comment #1 from pinskia at gcc dot gnu dot org  2010-09-10 15:30 -------
>1. index is constant or variable, and

Yes that is correct.  

>2. the 'bar' field type.

The alignment of the access is different in those cases.  

>In any case byte accesses should be used.
Why, word access is just as fast (if not faster) than a byte access on PPC.



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