if isRegShiftOrExt(&p.To) {
			// extended or shifted offset register.
			c.checkShiftAmount(p, &p.To)

			o1 = c.opstrr(p, p.As, true)
			o1 |= c.encRegShiftOrExt(p, &p.To, p.To.Index) /* includes reg, op, etc */
		} else {
			// (Rn)(Rm), no extension or shift.
			o1 = c.opstrr(p, p.As, false)
			o1 |= uint32(p.To.Index&31) << 16
		}
		o1 |= uint32(p.To.Reg&31) << 5
		rf := int(p.From.Reg)

}

// Create description of operation that could not be converted.
static std::string GetOpDescriptionForDebug(Operation* inst) {
  const int kLargeElementsAttr = 16;
  std::string op_str;
  llvm::raw_string_ostream os(op_str);
  inst->getName().print(os);
  os << "(";
  if (!inst->getOperandTypes().empty()) {
    bool first = true;
    for (Type operand_type : inst->getOperandTypes()) {