>> It shouldn't be too hard to add the support.  I suspect the person who did 
>> the
>> initial support may have been on a machine without vector shifts.
> 
> Nope, because it was originally done by Aldy who did the VMX support
> which had vector shifts.

OTOH the support for vector lowering was weaker than now in 3.x and it
was harder to add more lowering.  It shouldn't be very hard now to add
all kinds of shifts and also auto-splatting.

Paolo

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