Hi,

After fixing the v[id]wdups using the "moving the wrap parameter" into 
the top-end of a DImode operand using a shift, I noticed we were using 
lsll for 32-bit shifts in scalars, where we don't need to, as we can 
simply do a move, which is much better if we don't need to use the 
bottom part.

We can solve this in a better way, but for now this will do.

Regression tested on arm-none-eabi.

Is this OK for trunk?

2020-04-07  Andre Vieira  <andre.simoesdiasvieira@arm.com>

         * config/arm/arm.d (ashldi3): Don't use lsll for constant 32-bit
         shifts.