dart2js: Pass type information to constructor rather than add later.

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

Index: pkg/compiler/lib/src/ssa/codegen.dart
diff --git a/pkg/compiler/lib/src/ssa/codegen.dart b/pkg/compiler/lib/src/ssa/codegen.dart
index abd0314aa45d4ca41cd3399deef69fe4e94f619a..52726ef5e3717a66c0f45e335b5ea854738ada27 100644
--- a/pkg/compiler/lib/src/ssa/codegen.dart
+++ b/pkg/compiler/lib/src/ssa/codegen.dart
@@ -1943,10 +1943,7 @@ class SsaCodeGenerator implements HVisitor, HBlockInformationVisitor {
     if (node.element.isClosure) {
       registry.registerInstantiatedClass(node.element);
     }
-    if (node.instantiatedTypes == null) {
-      return;
-    }
-    node.instantiatedTypes.forEach((type) {
+    node.instantiatedTypes?.forEach((type) {

[Siggi Cherem (dart-lang), 2016/09/07 17:49:38]

nit: while we are at it, use a tear-off instead of a closure?

  node.instantiatedTypes?.forEach(registry.registerInstantiation);

[sra1, 2016/09/07 18:16:06]

Done.

       registry.registerInstantiation(type);
     });
   }