// FIXME: Once targets reserve registers instead of removing them from the
// allocation order, we can simply use begin/end here.
- TargetRegisterClass::iterator AOB = RC->allocation_order_begin(*MF);
- TargetRegisterClass::iterator AOE = RC->allocation_order_end(*MF);
-
- for (TargetRegisterClass::iterator I = AOB; I != AOE; ++I) {
- unsigned PhysReg = *I;
+ ArrayRef<unsigned> RawOrder = RC->getRawAllocationOrder(*MF);
+ for (unsigned i = 0; i != RawOrder.size(); ++i) {
+ unsigned PhysReg = RawOrder[i];
// Remove reserved registers from the allocation order.
if (Reserved.test(PhysReg))
continue;