recent troubles with float vectors & bitwise ops

[Paolo Bonzini]

>> Why did Intel split up these instructions in the first place, is it
>> because they wanted to have a seperate vector units in some cases?
>> I don't know and I don't care that much. 

To some extent I agree with Andrew Pinski here.  Saying that you need 
support in a generic vector extension for "vector float | vector float" 
in order to generate ANDPS and not PXOR, is just wrong.  That should be 
done by the back-end.

Paolo