unsigned RegAllocSimple::getFreeReg(unsigned virtualReg) {
const TargetRegisterClass* RC = MF->getRegInfo().getRegClass(virtualReg);
TargetRegisterClass::iterator RI = RC->allocation_order_begin(*MF);
+#ifndef NDEBUG
TargetRegisterClass::iterator RE = RC->allocation_order_end(*MF);
+#endif
while (1) {
unsigned regIdx = RegClassIdx[RC]++;