const TargetRegisterInfo *TRI = &VRM.getTargetRegInfo();
Order = RegClassInfo.getOrder(MF.getRegInfo().getRegClass(VirtReg));
TRI->getRegAllocationHints(VirtReg, Order, Hints, MF, &VRM);
+ rewind();
DEBUG({
if (!Hints.empty()) {
}
});
}
-
-bool AllocationOrder::isHint(unsigned PhysReg) const {
- return std::find(Hints.begin(), Hints.end(), PhysReg) != Hints.end();
-}
-
-unsigned AllocationOrder::next() {
- if (Pos < Hints.size())
- return Hints[Pos++];
- ArrayRef<MCPhysReg>::iterator I = Order.begin() + (Pos - Hints.size());
- ArrayRef<MCPhysReg>::iterator E = Order.end();
- while (I != E) {
- unsigned Reg = *I++;
- ++Pos;
- if (!isHint(Reg))
- return Reg;
- }
- return 0;
-}