Fix Clang-tidy modernize-use-nullptr warnings in examples and include directories; other minor cleanups.

Patch by Eugene Zelenko!

Differential Revision: http://reviews.llvm.org/D13172

llvm-svn: 248811

1 files changed, 5 insertions, 7 deletions

diff --git a/llvm/examples/Kaleidoscope/Orc/fully_lazy/toy.cpp b/llvm/examples/Kaleidoscope/Orc/fully_lazy/toy.cpp
index 7e5b38cafe7..667bca46afd 100644
--- a/llvm/examples/Kaleidoscope/Orc/fully_lazy/toy.cpp
+++ b/llvm/examples/Kaleidoscope/Orc/fully_lazy/toy.cpp
@@ -87,7 +87,7 @@ static int gettok() {
       LastChar = getchar();
     } while (isdigit(LastChar) || LastChar == '.');
 
-    NumVal = strtod(NumStr.c_str(), 0);
+    NumVal = strtod(NumStr.c_str(), nullptr);
     return tok_number;
   }
 
@@ -387,7 +387,6 @@ static std::unique_ptr<ForExprAST> ParseForExpr() {
     return ErrorU<ForExprAST>("expected '=' after for");
   getNextToken();  // eat '='.
 
-
   auto Start = ParseExpression();
   if (!Start)
     return nullptr;
@@ -748,7 +747,7 @@ static AllocaInst *CreateEntryBlockAlloca(Function *TheFunction,
                                           const std::string &VarName) {
   IRBuilder<> TmpB(&TheFunction->getEntryBlock(),
                  TheFunction->getEntryBlock().begin());
-  return TmpB.CreateAlloca(Type::getDoubleTy(getGlobalContext()), 0,
+  return TmpB.CreateAlloca(Type::getDoubleTy(getGlobalContext()), nullptr,
                            VarName.c_str());
 }
 
@@ -760,7 +759,7 @@ Value *VariableExprAST::IRGen(IRGenContext &C) const {
   // Look this variable up in the function.
   Value *V = C.NamedValues[Name];
 
-  if (V == 0)
+  if (!V)
     return ErrorP<Value>("Unknown variable name '" + Name + "'");
 
   // Load the value.
@@ -960,7 +959,7 @@ Value *ForExprAST::IRGen(IRGenContext &C) const {
 
   // Compute the end condition.
   Value *EndCond = End->IRGen(C);
-  if (EndCond == 0) return EndCond;
+  if (!EndCond) return nullptr;
 
   // Reload, increment, and restore the alloca.  This handles the case where
   // the body of the loop mutates the variable.
@@ -988,7 +987,6 @@ Value *ForExprAST::IRGen(IRGenContext &C) const {
   else
     C.NamedValues.erase(VarName);
 
-
   // for expr always returns 0.0.
   return Constant::getNullValue(Type::getDoubleTy(getGlobalContext()));
 }
@@ -1236,7 +1234,7 @@ private:
   RuntimeDyld::SymbolInfo searchFunctionASTs(const std::string &Name) {
     auto DefI = FunctionDefs.find(Name);
     if (DefI == FunctionDefs.end())
-      return 0;
+      return nullptr;
 
     // Return the address of the stub.
     // Take the FunctionAST out of the map.