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* config/rs6000/rs6000.c (function_arg_boundary): Always align AltiVec vectors. (function_arg_advance): Pass TARGET_32BIT -mabi=no-altivec AltiVec vectors by refererence. Align the same for TARGET_64BIT to a 16 byte boundary. Remove useless code. Add function comment. (function_arg): Similarly. Move gpr rs6000_mixed_function_arg call to where it belongs. (function_arg_partial_nregs): Return true for all TARGET_32BIT -mabi=no-altivec AltiVec vectors. Fix debug output. (rs6000_va_arg): Adjust for AltiVec change. From-SVN: r81666
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