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+; RUN: llvm-as < %s | llvm-dis | llvm-as | llvm-dis | FileCheck %s
+; RUN: verify-uselistorder %s
+; Make sure arbitrary metadata strings don't get mutated. These may be
+; (strange) filenames that are part of debug info.
+
+; CHECK: !named = !{!0}
+!named = !{!0}
+
+; CHECK: !0 = !{!"llvm.vectorizer.unroll"}
+!0 = !{!"llvm.vectorizer.unroll"}