Opt-in to generate code for compile-time error. Only supported for SSA.

pkg/compiler/lib/src/deferred_load.dart

Index: pkg/compiler/lib/src/deferred_load.dart
diff --git a/pkg/compiler/lib/src/deferred_load.dart b/pkg/compiler/lib/src/deferred_load.dart
index fb895369781de0fc3c5e3f8b3bbe943d6306bd50..1b287c948f319a5263168acffe9f98784f09dd87 100644
--- a/pkg/compiler/lib/src/deferred_load.dart
+++ b/pkg/compiler/lib/src/deferred_load.dart
@@ -776,7 +776,7 @@ class DeferredLoadTask extends CompilerTask {
       });
     }
     if (isProgramSplit) {
-      isProgramSplit = compiler.backend.registerDeferredLoading(
+      isProgramSplit = compiler.backend.enableDeferredLoadingIfSupported(
             lastDeferred, compiler.globalDependencies);
     }
   }