Do a sweep of symbol internalization. NFC.

llvm-svn: 369803
diff --git a/clang/lib/CodeGen/CGNonTrivialStruct.cpp b/clang/lib/CodeGen/CGNonTrivialStruct.cpp
index caf62d2..05615aa 100644
--- a/clang/lib/CodeGen/CGNonTrivialStruct.cpp
+++ b/clang/lib/CodeGen/CGNonTrivialStruct.cpp
@@ -823,7 +823,7 @@
   Gen.callFunc(FuncName, QT, Addrs, CGF);
 }
 
-template <size_t N> std::array<Address, N> createNullAddressArray();
+template <size_t N> static std::array<Address, N> createNullAddressArray();
 
 template <> std::array<Address, 1> createNullAddressArray() {
   return std::array<Address, 1>({{Address(nullptr, CharUnits::Zero())}});
diff --git a/clang/lib/Frontend/InterfaceStubFunctionsConsumer.cpp b/clang/lib/Frontend/InterfaceStubFunctionsConsumer.cpp
index cdf4e6b..73584eb 100644
--- a/clang/lib/Frontend/InterfaceStubFunctionsConsumer.cpp
+++ b/clang/lib/Frontend/InterfaceStubFunctionsConsumer.cpp
@@ -15,6 +15,7 @@
 
 using namespace clang;
 
+namespace {
 class InterfaceStubFunctionsConsumer : public ASTConsumer {
   CompilerInstance &Instance;
   StringRef InFile;
@@ -293,6 +294,7 @@
     writeIfsV1(Instance.getTarget().getTriple(), Symbols, context, Format, *OS);
   }
 };
+} // namespace
 
 std::unique_ptr<ASTConsumer>
 GenerateInterfaceIfsExpV1Action::CreateASTConsumer(CompilerInstance &CI,
diff --git a/clang/lib/Parse/ParseDecl.cpp b/clang/lib/Parse/ParseDecl.cpp
index 71d1c3b..3de52ce 100644
--- a/clang/lib/Parse/ParseDecl.cpp
+++ b/clang/lib/Parse/ParseDecl.cpp
@@ -86,8 +86,8 @@
 }
 
 /// Check if the a start and end source location expand to the same macro.
-bool FindLocsWithCommonFileID(Preprocessor &PP, SourceLocation StartLoc,
-                              SourceLocation EndLoc) {
+static bool FindLocsWithCommonFileID(Preprocessor &PP, SourceLocation StartLoc,
+                                     SourceLocation EndLoc) {
   if (!StartLoc.isMacroID() || !EndLoc.isMacroID())
     return false;
 
diff --git a/clang/lib/StaticAnalyzer/Core/BugReporter.cpp b/clang/lib/StaticAnalyzer/Core/BugReporter.cpp
index 2c49bee..3ce998f 100644
--- a/clang/lib/StaticAnalyzer/Core/BugReporter.cpp
+++ b/clang/lib/StaticAnalyzer/Core/BugReporter.cpp
@@ -1060,10 +1060,11 @@
   return S;
 }
 
-llvm::StringLiteral StrEnteringLoop = "Entering loop body";
-llvm::StringLiteral StrLoopBodyZero = "Loop body executed 0 times";
-llvm::StringLiteral StrLoopRangeEmpty = "Loop body skipped when range is empty";
-llvm::StringLiteral StrLoopCollectionEmpty =
+constexpr llvm::StringLiteral StrEnteringLoop = "Entering loop body";
+constexpr llvm::StringLiteral StrLoopBodyZero = "Loop body executed 0 times";
+constexpr llvm::StringLiteral StrLoopRangeEmpty =
+    "Loop body skipped when range is empty";
+constexpr llvm::StringLiteral StrLoopCollectionEmpty =
     "Loop body skipped when collection is empty";
 
 static std::unique_ptr<FilesToLineNumsMap>