[PATCH] [OPENMP] Codegen for threadprivate variables

[John McCall]

================
Comment at: lib/CodeGen/CGOpenMPRuntime.cpp:364
@@ +363,3 @@
+                                         /*isVarArg*/ false)->getPointerTo();
+  CCtor = llvm::Constant::getNullValue(CCtorTy);
+  if (Ctor == nullptr) {
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As elsewhere, please rename CCtor to be more easily distinguishable from Ctor.

Please also document what the purpose of this function is and why it's okay to always pass null here.

http://reviews.llvm.org/D4002