Allow use of deferred type-literals in non-constant contexts.

pkg/compiler/lib/src/ssa/builder.dart

Index: pkg/compiler/lib/src/ssa/builder.dart
diff --git a/pkg/compiler/lib/src/ssa/builder.dart b/pkg/compiler/lib/src/ssa/builder.dart
index 3c55c53fbf232ae09de1ba053af0b1e2921f0501..5117bd09a7a9830b944a1979eef581a5bc9eea16 100644
--- a/pkg/compiler/lib/src/ssa/builder.dart
+++ b/pkg/compiler/lib/src/ssa/builder.dart
@@ -5098,6 +5098,7 @@ class SsaBuilder extends NewResolvedVisitor {
 
   /// Generate the constant value for a constant type literal.
   void generateConstantTypeLiteral(ast.Send node) {
+    generateIsDeferredLoadedCheckIfNeeded(node);
     // TODO(karlklose): add type representation
     if (node.isCall) {
       // The node itself is not a constant but we register the selector (the