rv_and
emit(rv_and(rd, rs1, rs2), ctx);
emit(rv_and(lo(rd), lo(rd), RV_REG_T0), ctx);
emit(rv_and(lo(rd), lo(rd), RV_REG_T0), ctx);
emit(rv_and(lo(rd), lo(rd), lo(rs)), ctx);
emit(rv_and(hi(rd), hi(rd), hi(rs)), ctx);
emit(rv_and(lo(rd), lo(rd), lo(rs)), ctx);
emit(rv_and(RV_REG_T0, hi(rs1), hi(rs2)), ctx);
emit(rv_and(RV_REG_T0, lo(rs1), lo(rs2)), ctx);
emit(rv_and(RV_REG_T0, rd, rs), ctx);