_I_OP3_R_RI
p[1] = _I_OP3_R_RI(I_O0, IOP3_POPC, I_G0, imm);
#define I_ORri(rd, rs1, imm) _I_OP3_R_RI(rd, IOP3_OR, rs1, imm)
#define I_MOVi(rd, imm) _I_OP3_R_RI(rd, IOP3_OR, I_G0, imm)
#define I_JMPLri(rd, rs1, imm) _I_OP3_R_RI(rd, IOP3_JMPL, rs1, imm)