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

[oota-llvm.git] / lib / Transforms / Scalar / SimplifyCFGPass.cpp

diff --git a/lib/Transforms/Scalar/SimplifyCFGPass.cpp b/lib/Transforms/Scalar/SimplifyCFGPass.cpp
index 30d98b790c78ab33e8a116ee6042d1488d55bafd..5d5606ba47b0d5dec7ca2f523f646ebd10a79aee 100644 (file)
--- a/lib/Transforms/Scalar/SimplifyCFGPass.cpp
+++ b/lib/Transforms/Scalar/SimplifyCFGPass.cpp
@@ -72,7 +72,7 @@ FunctionPass *llvm::createCFGSimplificationPass() {
 static bool mergeEmptyReturnBlocks(Function &F) {
   bool Changed = false;
 
-  BasicBlock *RetBlock = 0;
+  BasicBlock *RetBlock = nullptr;
 
   // Scan all the blocks in the function, looking for empty return blocks.
   for (Function::iterator BBI = F.begin(), E = F.end(); BBI != E; ) {
@@ -80,7 +80,7 @@ static bool mergeEmptyReturnBlocks(Function &F) {
 
     // Only look at return blocks.
     ReturnInst *Ret = dyn_cast<ReturnInst>(BB.getTerminator());
-    if (Ret == 0) continue;
+    if (!Ret) continue;
 
     // Only look at the block if it is empty or the only other thing in it is a
     // single PHI node that is the operand to the return.
@@ -99,7 +99,7 @@ static bool mergeEmptyReturnBlocks(Function &F) {
     }
 
     // If this is the first returning block, remember it and keep going.
-    if (RetBlock == 0) {
+    if (!RetBlock) {
       RetBlock = &BB;
       continue;
     }
@@ -120,7 +120,7 @@ static bool mergeEmptyReturnBlocks(Function &F) {
 
     // If the canonical return block has no PHI node, create one now.
     PHINode *RetBlockPHI = dyn_cast<PHINode>(RetBlock->begin());
-    if (RetBlockPHI == 0) {
+    if (!RetBlockPHI) {
       Value *InVal = cast<ReturnInst>(RetBlock->getTerminator())->getOperand(0);
       pred_iterator PB = pred_begin(RetBlock), PE = pred_end(RetBlock);
       RetBlockPHI = PHINode::Create(Ret->getOperand(0)->getType(),
@@ -174,7 +174,7 @@ bool CFGSimplifyPass::runOnFunction(Function &F) {
 
   const TargetTransformInfo &TTI = getAnalysis<TargetTransformInfo>();
   DataLayoutPass *DLP = getAnalysisIfAvailable<DataLayoutPass>();
-  const DataLayout *DL = DLP ? &DLP->getDataLayout() : 0;
+  const DataLayout *DL = DLP ? &DLP->getDataLayout() : nullptr;
   bool EverChanged = removeUnreachableBlocks(F);
   EverChanged |= mergeEmptyReturnBlocks(F);
   EverChanged |= iterativelySimplifyCFG(F, TTI, DL);