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llvm-svn: 30315
diff --git a/llvm/tools/lto/lto.cpp b/llvm/tools/lto/lto.cpp
index 9dfc456..7f1ec1a 100644
--- a/llvm/tools/lto/lto.cpp
+++ b/llvm/tools/lto/lto.cpp
@@ -93,6 +93,9 @@
     if (lt != LTOInternalLinkage && strncmp (gv->getName().c_str(), "llvm.", 5))
       references.insert(mangler.getValueName(gv));
   }
+
+  // GlobalValue, even with InternalLinkage type, may have operands with 
+  // ExternalLinkage type. Do not ignore these operands.
   if (Constant *c = dyn_cast<Constant>(value))
     // Handle ConstantExpr, ConstantStruct, ConstantArry etc..
     for (unsigned i = 0, e = c->getNumOperands(); i != e; ++i)