rv_sll
emit(rv_sll(lo(rd), lo(rd), RV_REG_T0), ctx);
emit(rv_sll(hi(rd), lo(rd), RV_REG_T0), ctx);
emit(rv_sll(hi(rd), hi(rd), lo(rs)), ctx);
emit(rv_sll(lo(rd), lo(rd), lo(rs)), ctx);
emit(rv_sll(RV_REG_T0, RV_REG_T0, RV_REG_T1), ctx);
emit(rv_sll(RV_REG_T0, RV_REG_T0, RV_REG_T1), ctx);
emit(rv_sll(lo(rd), lo(rd), lo(rs)), ctx);
emit(is64 ? rv_sll(rd, rd, rs) : rv_sllw(rd, rd, rs), ctx);