Add LiveIntervalUnion print methods, RegAllocGreedy::trySplit debug spew.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121783 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/LiveIntervalUnion.h b/lib/CodeGen/LiveIntervalUnion.h
index 92d2482..d8dcbda 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 @@
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 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 @@
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 @@
return InterferingVRegs;
}
+ void print(raw_ostream &OS, const TargetRegisterInfo *TRI);
private:
Query(const Query&); // DO NOT IMPLEMENT
void operator=(const Query&); // DO NOT IMPLEMENT