Help converting neon 32-bit syntax to 64-bit

Hi,

I am trying to translate a function from Neon 32-bit syntax to 64-bit. Unfortunately, I had trouble understanding the documentation

For instance, an example is this line:

vld1.32         {q0}, [%[src1]]!

translates to this:

ld1             {v0.4s}, [%[src1]], #16

what I don't understand is the "v0.4s" bit means. I suppose it somehow has to translate to the q0 register, but the logic eludes me. Anyone can help me out?