Use separate ValueList for metadata.
This fixes PR4666.

llvm-svn: 78056
diff --git a/llvm/test/Bitcode/metadata.ll b/llvm/test/Bitcode/metadata.ll
new file mode 100644
index 0000000..593cefa
--- /dev/null
+++ b/llvm/test/Bitcode/metadata.ll
@@ -0,0 +1,6 @@
+; RUN: llvm-as < %s | llvm-dis -f -o /dev/null
+
+!llvm.foo = !{!0}
+!0 = metadata !{i32 42}
+@my.str = internal constant [4 x i8] c"foo\00"
+