diff options
Diffstat (limited to 'lib/CodeGen/LiveIntervalUnion.h')
-rw-r--r-- | lib/CodeGen/LiveIntervalUnion.h | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/lib/CodeGen/LiveIntervalUnion.h b/lib/CodeGen/LiveIntervalUnion.h index 92d248266e..d8dcbda8d3 100644 --- a/lib/CodeGen/LiveIntervalUnion.h +++ b/lib/CodeGen/LiveIntervalUnion.h @@ -20,6 +20,8 @@ #include "llvm/ADT/IntervalMap.h" #include "llvm/CodeGen/LiveInterval.h" +#include <algorithm> + namespace llvm { class TargetRegisterInfo; @@ -71,8 +73,8 @@ public: SegmentIter begin() { return Segments.begin(); } SegmentIter end() { return Segments.end(); } SegmentIter find(SlotIndex x) { return Segments.find(x); } - bool empty() { return Segments.empty(); } - SlotIndex startIndex() { return Segments.start(); } + bool empty() const { return Segments.empty(); } + SlotIndex startIndex() const { return Segments.start(); } // Add a live virtual register to this union and merge its segments. void unify(LiveInterval &VirtReg); @@ -106,6 +108,19 @@ public: // Public default ctor. InterferenceResult(): VirtRegI(), LiveUnionI() {} + /// start - Return the start of the current overlap. + SlotIndex start() const { + return std::max(VirtRegI->start, LiveUnionI.start()); + } + + /// stop - Return the end of the current overlap. + SlotIndex stop() const { + return std::min(VirtRegI->end, LiveUnionI.stop()); + } + + /// interference - Return the register that is interfering here. + LiveInterval *interference() const { return LiveUnionI.value(); } + // Note: this interface provides raw access to the iterators because the // result has no way to tell if it's valid to dereference them. @@ -121,6 +136,8 @@ public: bool operator!=(const InterferenceResult &IR) const { return !operator==(IR); } + + void print(raw_ostream &OS, const TargetRegisterInfo *TRI) const; }; /// Query interferences between a single live virtual register and a live @@ -206,6 +223,7 @@ public: return InterferingVRegs; } + void print(raw_ostream &OS, const TargetRegisterInfo *TRI); private: Query(const Query&); // DO NOT IMPLEMENT void operator=(const Query&); // DO NOT IMPLEMENT |