instr->type = INSTR_ALU_CKADD_STRUCT20;
instr->alu.dst.struct_id = (uint8_t)hdst->struct_id;
instr->alu.dst.n_bits = fdst->n_bits;
instr->alu.dst.offset = fdst->offset / 8;
instr->alu.src.struct_id = (uint8_t)hsrc->struct_id;
instr->type = INSTR_ALU_CKADD_STRUCT20;
instr->alu.dst.struct_id = (uint8_t)hdst->struct_id;
instr->alu.dst.n_bits = fdst->n_bits;
instr->alu.dst.offset = fdst->offset / 8;
instr->alu.src.struct_id = (uint8_t)hsrc->struct_id;