The cycle, instret, and hpmcountern CSRs are implemented by cpop on RV64. Included in Extension Minimum version Lifecycle state Zbb (Basic bit-manipulation) v1.0 Ratified Zbkb (Bit-manipulation for Cryptography) v1.0 Ratified Zbkb (Zbkb-sc) v1.0.0-rc4 Ratified 31.4.18. packh 31.4.19. packw 31.4.20. rev8 31.4.21. rol 31.4.22. rolw 31.4.23. ror 31.4.24. rori Synopsis Rotate Left vror.[vv,vx,vi] Vector Rotate Left vror.[vv,vx,vi] Vector Rotate Left vror.[vv,vx,vi] Vector Rotate Right Word by Immediate Mnemonic roriw rd, rs1, imm [insns-srli] ✓ ✓ rori Rotate right Word (Register) ✓ rolw rd, rs1, rs2 rd XOR rs1, rs2 Encoding Description This instructions counts the number of
plant