[PATCH] CodeGen: Don't emit a thread-wrapper if we can't touch the backing variable

[Richard Smith]

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Comment at: lib/CodeGen/ItaniumCXXABI.cpp:1846-1848
@@ +1845,5 @@
+  if (isThreadWrapperReplaceable(VD, CGM)) {
+    if (llvm::GlobalVariable::isLinkOnceLinkage(VarLinkage))
+      return llvm::GlobalVariable::WeakAnyLinkage;
+    return VarLinkage;
+  }
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I think you should also give a `WeakODRLinkage` variable a `WeakAnyLinkage` wrapper.

http://reviews.llvm.org/D4109