generic vectors: how should they work?

[Paolo Bonzini]

> Paolo> I don't understand this comment.  I see SIMD types as a synonym of 
> Paolo> vectors.  "Portable vectors", "generic vectors", "portable SIMD types", 
> Paolo> "generic SIMD types" seem all synonyms to me.
> 
> 	I thought that I already explained the distinction in the previous
> messages.

If you meant generic vectors as in, arbitrarily sized and/or with a size 
decided at run-time, then no, this is not my purpose.  GCC portable SIMD 
types (this is your nomenclature if I understood) have their size 
established at compile-time, and it must be a power of two.

Paolo