1 files changed, 5 insertions, 46 deletions

diff --git a/llvm/lib/CodeGen/LiveIntervalUnion.cpp b/llvm/lib/CodeGen/LiveIntervalUnion.cpp
index 9d4de6a7c24..ec502cd51ec 100644
--- a/llvm/lib/CodeGen/LiveIntervalUnion.cpp
+++ b/llvm/lib/CodeGen/LiveIntervalUnion.cpp
@@ -15,7 +15,6 @@
 
 #define DEBUG_TYPE "regalloc"
 #include "LiveIntervalUnion.h"
-#include "llvm/ADT/SparseBitVector.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/raw_ostream.h"
 #include <algorithm>
@@ -74,9 +73,12 @@ void LiveIntervalUnion::unify(LiveInterval &lvr) {
 #ifndef NDEBUG
     // check for overlap (inductively)
     if (segPos != segments_.begin()) {
-      assert(prior(segPos)->end <= segment.start && "overlapping segments" );
+      SegmentIter prevPos = segPos;
+      --prevPos;
+      assert(prevPos->end <= segment.start && "overlapping segments" );
     }
-    SegmentIter nextPos = next(segPos);
+    SegmentIter nextPos = segPos;
+    ++nextPos;
     if (nextPos != segments_.end())
       assert(segment.end <= nextPos->start && "overlapping segments" );
 #endif // NDEBUG
@@ -96,49 +98,6 @@ void LiveIntervalUnion::extract(const LiveInterval &lvr) {
   }
 }
 
-raw_ostream& llvm::operator<<(raw_ostream& os, const LiveSegment &ls) {
-  return os << '[' << ls.start << ',' << ls.end << ':' <<
-    ls.liveVirtReg->reg << ")";
-}
-
-void LiveSegment::dump() const {
-  dbgs() << *this << "\n";
-}
-
-void
-LiveIntervalUnion::print(raw_ostream &os,
-                         const AbstractRegisterDescription *rdesc) const {
-  os << "LIU ";
-  if (rdesc != NULL)
-    os << rdesc->getName(repReg_);
-  else {
-    os << repReg_;
-  }
-  for (SegmentIter segI = segments_.begin(), segEnd = segments_.end();
-       segI != segEnd; ++segI) {
-    dbgs() << " " << *segI;
-  }
-  os << "\n";
-}
-
-void LiveIntervalUnion::dump(const AbstractRegisterDescription *rdesc) const {
-  print(dbgs(), rdesc);
-}
-
-#ifndef NDEBUG
-// Verify the live intervals in this union and add them to the visited set.
-void LiveIntervalUnion::verify(LvrBitSet& visitedVRegs) {
-  SegmentIter segI = segments_.begin();
-  SegmentIter segEnd = segments_.end();
-  if (segI == segEnd) return;
-  visitedVRegs.set(segI->liveVirtReg->reg);
-  for (++segI; segI != segEnd; ++segI) {
-    visitedVRegs.set(segI->liveVirtReg->reg);
-    assert(prior(segI)->end <= segI->start && "overlapping segments" );
-  }
-}
-#endif //!NDEBUG
-
 // Private interface accessed by Query.
 //
 // Find a pair of segments that intersect, one in the live virtual register