[C++11] More 'nullptr' conversion or in some cases just using a boolean check instead of comparing to nullptr.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205831 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 17 insertions, 17 deletions

diff --git a/lib/IR/Metadata.cpp b/lib/IR/Metadata.cpp
index ba393345db..39acbd8106 100644
--- a/lib/IR/Metadata.cpp
+++ b/lib/IR/Metadata.cpp
@@ -87,7 +87,7 @@ public:
 MDNodeOperand::~MDNodeOperand() {}
 
 void MDNodeOperand::deleted() {
-  getParent()->replaceOperand(this, 0);
+  getParent()->replaceOperand(this, nullptr);
 }
 
 void MDNodeOperand::allUsesReplacedWith(Value *NV) {
@@ -148,10 +148,10 @@ MDNode::~MDNode() {
 }
 
 static const Function *getFunctionForValue(Value *V) {
-  if (!V) return NULL;
+  if (!V) return nullptr;
   if (Instruction *I = dyn_cast<Instruction>(V)) {
     BasicBlock *BB = I->getParent();
-    return BB ? BB->getParent() : 0;
+    return BB ? BB->getParent() : nullptr;
   }
   if (Argument *A = dyn_cast<Argument>(V))
     return A->getParent();
@@ -159,7 +159,7 @@ static const Function *getFunctionForValue(Value *V) {
     return BB->getParent();
   if (MDNode *MD = dyn_cast<MDNode>(V))
     return MD->getFunction();
-  return NULL;
+  return nullptr;
 }
 
 #ifndef NDEBUG
@@ -192,11 +192,11 @@ const Function *MDNode::getFunction() const {
 #ifndef NDEBUG
   return assertLocalFunction(this);
 #else
-  if (!isFunctionLocal()) return NULL;
+  if (!isFunctionLocal()) return nullptr;
   for (unsigned i = 0, e = getNumOperands(); i != e; ++i)
     if (const Function *F = getFunctionForValue(getOperand(i)))
       return F;
-  return NULL;
+  return nullptr;
 #endif
 }
 
@@ -335,14 +335,14 @@ void MDNode::replaceOperand(MDNodeOperand *Op, Value *To) {
   // Likewise if the MDNode is function-local but for a different function.
   if (To && isFunctionLocalValue(To)) {
     if (!isFunctionLocal())
-      To = 0;
+      To = nullptr;
     else {
       const Function *F = getFunction();
       const Function *FV = getFunctionForValue(To);
       // Metadata can be function-local without having an associated function.
       // So only consider functions to have changed if non-null.
       if (F && FV && F != FV)
-        To = 0;
+        To = nullptr;
     }
   }
   
@@ -366,7 +366,7 @@ void MDNode::replaceOperand(MDNodeOperand *Op, Value *To) {
   // anymore.  This commonly occurs during destruction, and uniquing these
   // brings little reuse.  Also, this means we don't need to include
   // isFunctionLocal bits in FoldingSetNodeIDs for MDNodes.
-  if (To == 0) {
+  if (!To) {
     setIsNotUniqued();
     return;
   }
@@ -407,7 +407,7 @@ void MDNode::replaceOperand(MDNodeOperand *Op, Value *To) {
 
 MDNode *MDNode::getMostGenericFPMath(MDNode *A, MDNode *B) {
   if (!A || !B)
-    return NULL;
+    return nullptr;
 
   APFloat AVal = cast<ConstantFP>(A->getOperand(0))->getValueAPF();
   APFloat BVal = cast<ConstantFP>(B->getOperand(0))->getValueAPF();
@@ -457,7 +457,7 @@ MDNode *MDNode::getMostGenericRange(MDNode *A, MDNode *B) {
   // the ones that overlap.
 
   if (!A || !B)
-    return NULL;
+    return nullptr;
 
   if (A == B)
     return A;
@@ -512,7 +512,7 @@ MDNode *MDNode::getMostGenericRange(MDNode *A, MDNode *B) {
     ConstantRange Range(cast<ConstantInt>(EndPoints[0])->getValue(),
                         cast<ConstantInt>(EndPoints[1])->getValue());
     if (Range.isFullSet())
-      return NULL;
+      return nullptr;
   }
 
   return MDNode::get(A->getContext(), EndPoints);
@@ -527,7 +527,7 @@ static SmallVector<TrackingVH<MDNode>, 4> &getNMDOps(void *Operands) {
 }
 
 NamedMDNode::NamedMDNode(const Twine &N)
-  : Name(N.str()), Parent(0),
+  : Name(N.str()), Parent(nullptr),
     Operands(new SmallVector<TrackingVH<MDNode>, 4>()) {
 }
 
@@ -575,7 +575,7 @@ StringRef NamedMDNode::getName() const {
 //
 
 void Instruction::setMetadata(StringRef Kind, MDNode *Node) {
-  if (Node == 0 && !hasMetadata()) return;
+  if (!Node && !hasMetadata()) return;
   setMetadata(getContext().getMDKindID(Kind), Node);
 }
 
@@ -631,7 +631,7 @@ void Instruction::dropUnknownMetadata(ArrayRef<unsigned> KnownIDs) {
 /// node.  This updates/replaces metadata if already present, or removes it if
 /// Node is null.
 void Instruction::setMetadata(unsigned KindID, MDNode *Node) {
-  if (Node == 0 && !hasMetadata()) return;
+  if (!Node && !hasMetadata()) return;
 
   // Handle 'dbg' as a special case since it is not stored in the hash table.
   if (KindID == LLVMContext::MD_dbg) {
@@ -691,7 +691,7 @@ MDNode *Instruction::getMetadataImpl(unsigned KindID) const {
   if (KindID == LLVMContext::MD_dbg)
     return DbgLoc.getAsMDNode(getContext());
   
-  if (!hasMetadataHashEntry()) return 0;
+  if (!hasMetadataHashEntry()) return nullptr;
   
   LLVMContextImpl::MDMapTy &Info = getContext().pImpl->MetadataStore[this];
   assert(!Info.empty() && "bit out of sync with hash table");
@@ -699,7 +699,7 @@ MDNode *Instruction::getMetadataImpl(unsigned KindID) const {
   for (const auto &I : Info)
     if (I.first == KindID)
       return I.second;
-  return 0;
+  return nullptr;
 }
 
 void Instruction::getAllMetadataImpl(SmallVectorImpl<std::pair<unsigned,