Revert r247218: "Fix Clang-tidy misc-use-override warnings, other minor fixes"

Seems it broke the Polly build.
From http://lab.llvm.org:8011/builders/perf-x86_64-penryn-O3-polly-fast/builds/11687/steps/compile/logs/stdio:

In file included from /home/grosser/buildslave/perf-x86_64-penryn-O3-polly-fast/llvm.src/lib/TableGen/Record.cpp:14:0:
/home/grosser/buildslave/perf-x86_64-penryn-O3-polly-fast/llvm.src/include/llvm/TableGen/Record.h:369:3: error: looser throw specifier for 'virtual llvm::TypedInit::~TypedInit()'
/home/grosser/buildslave/perf-x86_64-penryn-O3-polly-fast/llvm.src/include/llvm/TableGen/Record.h:270:11: error:   overriding 'virtual llvm::Init::~Init() noexcept (true)'

llvm-svn: 247222
diff --git a/clang/lib/CodeGen/CGOpenMPRuntime.cpp b/clang/lib/CodeGen/CGOpenMPRuntime.cpp
index 572fd19..a0b3ee5 100644
--- a/clang/lib/CodeGen/CGOpenMPRuntime.cpp
+++ b/clang/lib/CodeGen/CGOpenMPRuntime.cpp
@@ -59,7 +59,7 @@
   virtual const VarDecl *getThreadIDVariable() const = 0;
 
   /// \brief Emit the captured statement body.
-  void EmitBody(CodeGenFunction &CGF, const Stmt *S) override;
+  virtual void EmitBody(CodeGenFunction &CGF, const Stmt *S) override;
 
   /// \brief Get an LValue for the current ThreadID variable.
   /// \return LValue for thread id variable. This LValue always has type int32*.
@@ -156,7 +156,7 @@
       return OuterRegionInfo->getContextValue();
     llvm_unreachable("No context value for inlined OpenMP region");
   }
-  void setContextValue(llvm::Value *V) override {
+  virtual void setContextValue(llvm::Value *V) override {
     if (OuterRegionInfo) {
       OuterRegionInfo->setContextValue(V);
       return;
@@ -229,7 +229,7 @@
   }
 };
 
-} // anonymous namespace
+} // namespace
 
 LValue CGOpenMPRegionInfo::getThreadIDVariableLValue(CodeGenFunction &CGF) {
   return CGF.MakeNaturalAlignAddrLValue(
@@ -1283,7 +1283,7 @@
     CGF.EmitRuntimeCall(Callee, Args);
   }
 };
-} // anonymous namespace
+} // namespace
 
 void CGOpenMPRuntime::emitCriticalRegion(CodeGenFunction &CGF,
                                          StringRef CriticalName,
@@ -1831,7 +1831,7 @@
   /// \brief Function with call of destructors for private variables.
   KmpTaskTDestructors,
 };
-} // anonymous namespace
+} // namespace
 
 void CGOpenMPRuntime::emitKmpRoutineEntryT(QualType KmpInt32Ty) {
   if (!KmpRoutineEntryPtrTy) {
@@ -1866,7 +1866,7 @@
   const VarDecl *PrivateElemInit;
 };
 typedef std::pair<CharUnits /*Align*/, PrivateHelpersTy> PrivateDataTy;
-} // anonymous namespace
+} // namespace
 
 static RecordDecl *
 createPrivatesRecordDecl(CodeGenModule &CGM,
@@ -2910,3 +2910,4 @@
     }
   }
 }
+