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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 baeb2aa1a46cc89a5f8df54478a8f4efe1c5bad9..5d489bd35d1018b563c423d44ecede168057e390 100644
--- a/pkg/compiler/lib/src/deferred_load.dart
+++ b/pkg/compiler/lib/src/deferred_load.dart
@@ -165,6 +165,8 @@ class DeferredLoadTask extends CompilerTask {
 
   /// Returns the [OutputUnit] where [element] belongs.
   OutputUnit outputUnitForElement(Element element) {
+    // TODO(johnniwinther): Support use of entities by splitting maps by
+    // entity kind.
     if (!isProgramSplit) return mainOutputUnit;
 
     element = element.implementation;
@@ -184,13 +186,15 @@ class DeferredLoadTask extends CompilerTask {
   }
 
   /// Returns the [OutputUnit] where [element] belongs.
-  OutputUnit outputUnitForClass(ClassElement element) {
-    return outputUnitForElement(element);
+  OutputUnit outputUnitForClass(ClassEntity element) {
+    if (!isProgramSplit) return mainOutputUnit;

[Siggi Cherem (dart-lang), 2017/05/30 22:10:20]

how about removing the check here and the cast below, instead do change
outputUnitForElement to take an Entity, return quickly and then cast to an
Element?

if (!isProgramSplit) return ...;
// TODO(johhniwinther): support entities by .... 
Element element = entity;

[Johnni Winther, 2017/05/31 08:19:31]

Done.

+    return outputUnitForElement(element as ClassElement);
   }
 
   /// Returns the [OutputUnit] where [element] belongs.
-  OutputUnit outputUnitForMember(MemberElement element) {
-    return outputUnitForElement(element);
+  OutputUnit outputUnitForMember(MemberEntity element) {
+    if (!isProgramSplit) return mainOutputUnit;
+    return outputUnitForElement(element as MemberElement);
   }
 
   /// Direct access to the output-unit to element relation used for testing.