297   enum class LocationQuality : unsigned char {  enum in TransferTracker
311     LocationAndQuality(LocIdx L, LocationQuality Q)  in LocationAndQuality()
318     LocationQuality getQuality() const { return LocationQuality(Quality); }  in getQuality()
320     bool isBest() const { return getQuality() == LocationQuality::Best; }  in isBest()
332   std::optional<LocationQuality>
333   getLocQualityIfBetter(LocIdx L, LocationQuality Min) const {  in getLocQualityIfBetter()
336     if (Min >= LocationQuality::SpillSlot)  in getLocQualityIfBetter()
339       return LocationQuality::SpillSlot;  in getLocQualityIfBetter()
340     if (Min >= LocationQuality::CalleeSavedRegister)  in getLocQualityIfBetter()
343       return LocationQuality::CalleeSavedRegister;  in getLocQualityIfBetter()
344     if (Min >= LocationQuality::Register)  in getLocQualityIfBetter()
346     return LocationQuality::Register;  in getLocQualityIfBetter()
499       std::optional<LocationQuality> ReplacementQuality =  in loadInlocs()
567       std::optional<LocationQuality> ReplacementQuality =  in checkInstForNewValues()
1692     std::optional<TransferTracker::LocationQuality> ReplacementQuality =  in transferDebugInstrRef()