[C++] Use 'nullptr'.

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

diff --git a/lib/Transforms/Utils/LoopUnrollRuntime.cpp b/lib/Transforms/Utils/LoopUnrollRuntime.cpp
index 67f6eb5086ef7d7174f63d54a77dce73d129d71e..5bef091a499ba7078fdf38041daaf9183e029a4c 100644 (file)
--- a/lib/Transforms/Utils/LoopUnrollRuntime.cpp
+++ b/lib/Transforms/Utils/LoopUnrollRuntime.cpp
@@ -59,7 +59,7 @@ static void ConnectProlog(Loop *L, Value *TripCount, unsigned Count,
                           BasicBlock *OrigPH, BasicBlock *NewPH,
                           ValueToValueMapTy &LVMap, Pass *P) {
   BasicBlock *Latch = L->getLoopLatch();
-  assert(Latch != 0 && "Loop must have a latch");
+  assert(Latch && "Loop must have a latch");
 
   // Create a PHI node for each outgoing value from the original loop
   // (which means it is an outgoing value from the prolog code too).
@@ -111,7 +111,7 @@ static void ConnectProlog(Loop *L, Value *TripCount, unsigned Count,
     new ICmpInst(InsertPt, ICmpInst::ICMP_ULT, TripCount,
                  ConstantInt::get(TripCount->getType(), Count));
   BasicBlock *Exit = L->getUniqueExitBlock();
-  assert(Exit != 0 && "Loop must have a single exit block only");
+  assert(Exit && "Loop must have a single exit block only");
   // Split the exit to maintain loop canonicalization guarantees
   SmallVector<BasicBlock*, 4> Preds(pred_begin(Exit), pred_end(Exit));
   if (!Exit->isLandingPad()) {
@@ -233,7 +233,7 @@ bool llvm::UnrollRuntimeLoopProlog(Loop *L, unsigned Count, LoopInfo *LI,
 
   // Make sure the loop is in canonical form, and there is a single
   // exit block only.
-  if (!L->isLoopSimplifyForm() || L->getUniqueExitBlock() == 0)
+  if (!L->isLoopSimplifyForm() || !L->getUniqueExitBlock())
     return false;
 
   // Use Scalar Evolution to compute the trip count.  This allows more
@@ -241,7 +241,7 @@ bool llvm::UnrollRuntimeLoopProlog(Loop *L, unsigned Count, LoopInfo *LI,
   if (!LPM)
     return false;
   ScalarEvolution *SE = LPM->getAnalysisIfAvailable<ScalarEvolution>();
-  if (SE == 0)
+  if (!SE)
     return false;
 
   // Only unroll loops with a computable trip count and the trip count needs
@@ -302,7 +302,7 @@ bool llvm::UnrollRuntimeLoopProlog(Loop *L, unsigned Count, LoopInfo *LI,
   ValueToValueMapTy LVMap;
   Function *F = Header->getParent();
   // These variables are used to update the CFG links in each iteration
-  BasicBlock *CompareBB = 0;
+  BasicBlock *CompareBB = nullptr;
   BasicBlock *LastLoopBB = PH;
   // Get an ordered list of blocks in the loop to help with the ordering of the
   // cloned blocks in the prolog code