[libre-riscv-dev] RVV setting VL to zero, what happens?

[Luke Kenneth Casson Leighton]

in the example pseudo-code listed here
  https://www.sigarch.org/simd-instructions-considered-harmful/

there's a potential missing corner-case at the start, and it's where n
is zero.   has this been taken into account in the design of RVV?

l.