| # RISC-V Bit-Manipulation extension. |
| # Zbb extension (Basic bit-manipulation) |
| # Version 1.0 |
| |
| clzw | i | rs1 rd | 011000000000.....001.....0011011 |
| ctzw | i | rs1 rd | 011000000001.....001.....0011011 |
| cpopw | i | rs1 rd | 011000000010.....001.....0011011 |
| rolw | r | rs2 rs1 rd | 0110000..........001.....0111011 |
| roriw | i | shamt5 rs1 rd | 0110000..........101.....0011011 |
| rorw | r | rs2 rs1 rd | 0110000..........101.....0111011 |
| zext.h | i | rs1 rd | 000010000000.....100.....0111011 |
| rev8 | i | rs1 rd | 011010111000.....101.....0010011 |
