Compile and run Hello World!

pkg/compiler/lib/src/universe/codegen_world_builder.dart

Index: pkg/compiler/lib/src/universe/codegen_world_builder.dart
diff --git a/pkg/compiler/lib/src/universe/codegen_world_builder.dart b/pkg/compiler/lib/src/universe/codegen_world_builder.dart
index edccc6eed9d3bb5c9e14133453916e0cf5012ac1..36e2905277d81a164fd9b0aa53c3940d3a96f400 100644
--- a/pkg/compiler/lib/src/universe/codegen_world_builder.dart
+++ b/pkg/compiler/lib/src/universe/codegen_world_builder.dart
@@ -27,9 +27,12 @@ abstract class CodegenWorldBuilder implements WorldBuilder {
   void forEachInvokedSetter(
       f(String name, Map<Selector, SelectorConstraints> selectors));
 
-  /// Returns `true` if [field] constant or final with a constant initializer.
+  /// Returns `true` if [field] has a constant initializer.
   bool hasConstantFieldInitializer(FieldEntity field);
 
+  /// Returns the constant initializer for [field].
+  ConstantValue getConstantFieldInitializer(FieldEntity field);
+
   /// Returns `true` if [member] is invoked as a setter.
   bool hasInvokedSetter(MemberEntity member, ClosedWorld world);
 
@@ -561,6 +564,13 @@ class ElementCodegenWorldBuilderImpl extends CodegenWorldBuilderImpl {
     return field.constant != null;
   }
 
+  @override
+  ConstantValue getConstantFieldInitializer(FieldElement field) {
+    assert(field.constant != null,
+        failedAt(field, "Field $field doesn't have a constant initial value."));
+    return _constants.getConstantValue(field.constant);
+  }
+
   /// Calls [f] with every instance field, together with its declarer, in an
   /// instance of [cls].
   void forEachInstanceField(
@@ -633,6 +643,11 @@ class KernelCodegenWorldBuilder extends CodegenWorldBuilderImpl {
   }
 
   @override
+  ConstantValue getConstantFieldInitializer(FieldEntity field) {
+    return _elementMap.getConstantFieldInitializer(field);
+  }
+
+  @override
   void forEachParameter(FunctionEntity function,
       void f(DartType type, String name, ConstantValue defaultValue)) {
     _elementMap.forEachParameter(function, f);