32 struct HexagonBlockRanges {  struct
35   struct RegisterRef {
41   typedef std::set<RegisterRef> RegisterSet;
47     enum : unsigned {
53     static bool isInstr(IndexType X) { return X.Index >= First; }  in isInstr()
55     IndexType() : Index(None) {}  in IndexType()
56     IndexType(unsigned Idx) : Index(Idx) {}  in IndexType()
71     unsigned Index;
79     IndexRange() : Fixed(false), TiedEnd(false) {}  in IndexRange()
82     IndexType start() const { return first; }  in start()
83     IndexType end() const   { return second; }  in end()
92     bool Fixed;      // Can be renamed?  "Fixed" means "no".
93     bool TiedEnd;    // The end is not a use, but a dead def tied to a use.
96     void setStart(const IndexType &S) { first = S; }  in setStart()
97     void setEnd(const IndexType &E)   { second = E; }  in setEnd()
104     void add(IndexType Start, IndexType End, bool Fixed, bool TiedEnd) {  in add()
107     void add(const IndexRange &Range) {  in add()
123     MachineBasicBlock &getBlock() const { return Block; }  in getBlock()
129     IndexType First, Last;
133     std::map<IndexType,MachineInstr*> Map;
136   typedef std::map<RegisterRef,RangeList> RegToRangeMap;
142   struct PrintRangeMap {
166 inline HexagonBlockRanges::IndexType::operator unsigned() const {  argument