Fix Clang-tidy modernize-use-nullptr warnings in source directories and generated files; other minor cleanups.

Patch by Eugene Zelenko!

Differential Revision: http://reviews.llvm.org/D13321

llvm-svn: 249482

3 files changed, 10 insertions, 11 deletions

diff --git a/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp b/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp
index 54c95d438f3..f4f58ac7ce7 100644
--- a/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp
+++ b/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp
@@ -729,7 +729,7 @@ struct FunctionStackPoisoner : public InstVisitor<FunctionStackPoisoner> {
                      Instruction *ThenTerm, Value *ValueIfFalse);
 };
 
-}  // namespace
+} // anonymous namespace
 
 char AddressSanitizer::ID = 0;
 INITIALIZE_PASS_BEGIN(
@@ -959,7 +959,7 @@ void AddressSanitizer::instrumentMop(ObjectSizeOffsetVisitor &ObjSizeVis,
     // If initialization order checking is disabled, a simple access to a
     // dynamically initialized global is always valid.
     GlobalVariable *G = dyn_cast<GlobalVariable>(GetUnderlyingObject(Addr, DL));
-    if (G != NULL && (!ClInitializers || GlobalIsLinkerInitialized(G)) &&
+    if (G && (!ClInitializers || GlobalIsLinkerInitialized(G)) &&
         isSafeAccess(ObjSizeVis, Addr, TypeSize)) {
       NumOptimizedAccessesToGlobalVar++;
       return;
@@ -1805,7 +1805,7 @@ void FunctionStackPoisoner::poisonStack() {
     unpoisonDynamicAllocas();
   }
 
-  if (AllocaVec.size() == 0) return;
+  if (AllocaVec.empty()) return;
 
   int StackMallocIdx = -1;
   DebugLoc EntryDebugLocation;
diff --git a/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp b/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
index dad3873fc18..9d4c7de729f 100644
--- a/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
+++ b/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
@@ -291,17 +291,17 @@ static const PlatformMemoryMapParams Linux_X86_MemoryMapParams = {
 };
 
 static const PlatformMemoryMapParams Linux_MIPS_MemoryMapParams = {
-  NULL,
+  nullptr,
   &Linux_MIPS64_MemoryMapParams,
 };
 
 static const PlatformMemoryMapParams Linux_PowerPC_MemoryMapParams = {
-  NULL,
+  nullptr,
   &Linux_PowerPC64_MemoryMapParams,
 };
 
 static const PlatformMemoryMapParams Linux_ARM_MemoryMapParams = {
-  NULL,
+  nullptr,
   &Linux_AArch64_MemoryMapParams,
 };
 
@@ -384,7 +384,7 @@ class MemorySanitizer : public FunctionPass {
   friend struct VarArgAMD64Helper;
   friend struct VarArgMIPS64Helper;
 };
-}  // namespace
+} // anonymous namespace
 
 char MemorySanitizer::ID = 0;
 INITIALIZE_PASS(MemorySanitizer, "msan",
@@ -407,7 +407,6 @@ static GlobalVariable *createPrivateNonConstGlobalForString(Module &M,
                             GlobalValue::PrivateLinkage, StrConst, "");
 }
 
-
 /// \brief Insert extern declaration of runtime-provided functions and globals.
 void MemorySanitizer::initializeCallbacks(Module &M) {
   // Only do this once.
@@ -3105,7 +3104,7 @@ VarArgHelper *CreateVarArgHelper(Function &Func, MemorySanitizer &Msan,
     return new VarArgNoOpHelper(Func, Msan, Visitor);
 }
 
-}  // namespace
+} // anonymous namespace
 
 bool MemorySanitizer::runOnFunction(Function &F) {
   if (&F == MsanCtorFunction)
diff --git a/llvm/lib/Transforms/Instrumentation/SafeStack.cpp b/llvm/lib/Transforms/Instrumentation/SafeStack.cpp
index bfc69621456..1b28caffd4a 100644
--- a/llvm/lib/Transforms/Instrumentation/SafeStack.cpp
+++ b/llvm/lib/Transforms/Instrumentation/SafeStack.cpp
@@ -278,7 +278,7 @@ Value *SafeStack::getOrCreateUnsafeStackPtr(IRBuilder<> &IRB, Function &F) {
       UnsafeStackPtr = new GlobalVariable(
           /*Module=*/M, /*Type=*/StackPtrTy,
           /*isConstant=*/false, /*Linkage=*/GlobalValue::ExternalLinkage,
-          /*Initializer=*/0, /*Name=*/kUnsafeStackPtrVar,
+          /*Initializer=*/nullptr, /*Name=*/kUnsafeStackPtrVar,
           /*InsertBefore=*/nullptr,
           /*ThreadLocalMode=*/GlobalValue::InitialExecTLSModel);
     } else {
@@ -619,7 +619,7 @@ bool SafeStack::runOnFunction(Function &F) {
   return true;
 }
 
-} // end anonymous namespace
+} // anonymous namespace
 
 char SafeStack::ID = 0;
 INITIALIZE_TM_PASS_BEGIN(SafeStack, "safe-stack",