message: Simplify graphdef2mlir/graph-library.pbtxt test to be more targeted
  This test verifies that functions from the library are properly imported, the
  CHECK lines are updated to target this in particular.
diff: @@ -36,15 +36,13 @@ versions {
  min_consumer: 12
  }
  -# CHECK: func @main() {
  -# CHECK-NEXT: %0 = "_tf.foo0"() {device = "", name = "unnamed"} : () -> !_tf.control
  -# CHECK-NEXT: %1 = "_tf.bar0"() {device = "", name = "unnamed1"} : () -> !_tf.control
  -# CHECK-NEXT: return
  -# CHECK-NEXT: }
  -# CHECK: func @foo0() {
  -# CHECK-NEXT: %0 = "_tf.bar0"() {device = "", name = "unnamed"} : () -> !_tf.control
  -# CHECK-NEXT: return
  -# CHECK-NEXT: }
  -# CHECK: func @bar0() {
  -# CHECK-NEXT: return
  -# CHECK-NEXT: }
  +# Verify that functions from the library are properly imported.
  +
  +# CHECK-LABEL: func @main() {
  +# CHECK: "_tf.foo0"()
  +# CHECK: "_tf.bar0"()
  +
  +# CHECK-LABEL: func @foo0() {
  +# CHECK: "_tf.bar0"()
  +
  +# CHECK-LABEL: func @bar0() {
  