.version 6.5 .target sm_30 .address_size 64 .visible .entry mul_hi( .param .u64 input, .param .u64 output ) { .reg .u64 in_addr; .reg .u64 out_addr; .reg .u64 temp; .reg .u64 temp2; ld.param.u64 in_addr, [input]; ld.param.u64 out_addr, [output]; ld.u64 temp, [in_addr]; mul.hi.u64 temp2, temp, 2; st.u64 [out_addr], temp2; ret; }