[C++] Use 'nullptr'. Transforms edition.

[oota-llvm.git] / lib / Transforms / Utils / LoopUnroll.cpp

diff --git a/lib/Transforms/Utils/LoopUnroll.cpp b/lib/Transforms/Utils/LoopUnroll.cpp
index 543f774c64d7c98f463a044170e2224f75a3834f..668324881e3d8cf2a293120a367db6be7c99e5ef 100644 (file)
--- a/lib/Transforms/Utils/LoopUnroll.cpp
+++ b/lib/Transforms/Utils/LoopUnroll.cpp
@@ -69,10 +69,10 @@ static BasicBlock *FoldBlockIntoPredecessor(BasicBlock *BB, LoopInfo* LI,
   // pred, and if there is only one distinct successor of the predecessor, and
   // if there are no PHI nodes.
   BasicBlock *OnlyPred = BB->getSinglePredecessor();
-  if (!OnlyPred) return 0;
+  if (!OnlyPred) return nullptr;
 
   if (OnlyPred->getTerminator()->getNumSuccessors() != 1)
-    return 0;
+    return nullptr;
 
   DEBUG(dbgs() << "Merging: " << *BB << "into: " << *OnlyPred);
 
@@ -412,7 +412,7 @@ bool llvm::UnrollLoop(Loop *L, unsigned Count, unsigned TripCount,
     }
   }
 
-  DominatorTree *DT = 0;
+  DominatorTree *DT = nullptr;
   if (PP) {
     // FIXME: Reconstruct dom info, because it is not preserved properly.
     // Incrementally updating domtree after loop unrolling would be easy.
@@ -459,7 +459,7 @@ bool llvm::UnrollLoop(Loop *L, unsigned Count, unsigned TripCount,
 
   Loop *OuterL = L->getParentLoop();
   // Remove the loop from the LoopPassManager if it's completely removed.
-  if (CompletelyUnroll && LPM != NULL)
+  if (CompletelyUnroll && LPM != nullptr)
     LPM->deleteLoopFromQueue(L);
 
   // If we have a pass and a DominatorTree we should re-simplify impacted loops
@@ -471,7 +471,7 @@ bool llvm::UnrollLoop(Loop *L, unsigned Count, unsigned TripCount,
       OuterL = L;
     if (OuterL) {
       ScalarEvolution *SE = PP->getAnalysisIfAvailable<ScalarEvolution>();
-      simplifyLoop(OuterL, DT, LI, PP, /*AliasAnalysis*/ 0, SE);
+      simplifyLoop(OuterL, DT, LI, PP, /*AliasAnalysis*/ nullptr, SE);
       formLCSSARecursively(*OuterL, *DT, SE);
     }
   }