LowerBitSets: Do not assign names to aliases of unnamed bitset element objects.

The restriction on unnamed aliases was removed in r239921. Mostly reverts
r239590, but we keep the test.

llvm-svn: 239923
diff --git a/llvm/lib/Transforms/IPO/LowerBitSets.cpp b/llvm/lib/Transforms/IPO/LowerBitSets.cpp
index dec583b..bffeebb 100644
--- a/llvm/lib/Transforms/IPO/LowerBitSets.cpp
+++ b/llvm/lib/Transforms/IPO/LowerBitSets.cpp
@@ -556,9 +556,8 @@
     } else {
       GlobalAlias *GAlias =
           GlobalAlias::create(Globals[I]->getType(), Globals[I]->getLinkage(),
-                              "data", CombinedGlobalElemPtr, M);
-      if (Globals[I]->hasName())
-        GAlias->takeName(Globals[I]);
+                              "", CombinedGlobalElemPtr, M);
+      GAlias->takeName(Globals[I]);
       Globals[I]->replaceAllUsesWith(GAlias);
     }
     Globals[I]->eraseFromParent();