+ case 'H': // The highest-numbered register of a pair.
+ const MachineOperand &MO = MI->getOperand(OpNum);
+ if (!MO.isReg())
+ return true;
+ const TargetRegisterClass &RC = ARM::GPRRegClass;
+ const MachineFunction &MF = *MI->getParent()->getParent();
+ const TargetRegisterInfo *TRI = MF.getTarget().getRegisterInfo();
+
+ unsigned RegIdx = TRI->getEncodingValue(MO.getReg());
+ RegIdx |= 1; //The odd register is also the higher-numbered one of a pair.
+
+ unsigned Reg = RC.getRegister(RegIdx);
+ O << ARMInstPrinter::getRegisterName(Reg);
+ return false;