Restore "Move metadata linking after lazy global materialization/linking."

This reverts commit r251965.

llvm-svn: 252319
diff --git a/llvm/test/Linker/Inputs/only-needed-named-metadata.ll b/llvm/test/Linker/Inputs/only-needed-named-metadata.ll
new file mode 100644
index 0000000..fa7bc2e
--- /dev/null
+++ b/llvm/test/Linker/Inputs/only-needed-named-metadata.ll
@@ -0,0 +1,9 @@
+@X = external global i32
+
+declare i32 @foo()
+
+define void @bar() {
+	load i32, i32* @X
+	call i32 @foo()
+	ret void
+}