A330 FCOM 3.04.10: The characteristic speeds displayed on the PFD are computed by the FE (Flight Envelope). (...) Computations by the FE and FMGC are based on the gross weight information transmitted by the FCMC (Fuel Control and Monitoring Computer).
In Alternate Law (FCOM 3.04.27 p.7): Unlike VLS, which is stable, VSW (stall warning speed) is g sensitive so as to give additional margin in turns.