clip test optimizations, fixes Wrestlemania 2000 clamped -(-32768)
clip test optimizations, fixes Wrestlemania 2000 clamped -(-32768)

8l/rsp,mupen64plus/mupen64plus-rsp-cxd4,8l/rsp,mupen64plus/mupen64plus-rsp-cxd4,mupen64plus/mupen64plus-rsp-cxd4,8l/rsp