Use precomputed constant for determining if static is lazy-init

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

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:kernel/ast.dart' as ir;
 
 import '../common.dart';
 import '../common/codegen.dart' show CodegenRegistry, CodegenWorkItem;
 import '../common/names.dart';
 import '../common/tasks.dart' show CompilerTask;
@@ skipping 923 matching lines @@
     if (staticTarget is ir.Procedure &&
         staticTarget.kind == ir.ProcedureKind.Getter) {
       // Invoke the getter
       _pushStaticInvocation(staticTarget, const <HInstruction>[],
           astAdapter.returnTypeOf(staticTarget));
     } else if (staticTarget is ir.Field && staticTarget.isConst) {
       assert(staticTarget.initializer != null);
       stack.add(graph.addConstant(
           astAdapter.getConstantFor(staticTarget.initializer), compiler));
     } else {
-      push(new HStatic(astAdapter.getMember(staticTarget),
-          astAdapter.inferredTypeOf(staticTarget)));
+      if (_isLazyStatic(staticTarget)) {
+        push(new HLazyStatic(astAdapter.getField(staticTarget),
+                             astAdapter.inferredTypeOf(staticTarget)));
+      } else {
+        push(new HStatic(astAdapter.getMember(staticTarget),
+                         astAdapter.inferredTypeOf(staticTarget)));
+      }
     }
   }
 
+  bool _isLazyStatic(ir.Member target) {
+    return astAdapter.isLazyStatic(target);
+  }
+
   @override
   void visitStaticSet(ir.StaticSet staticSet) {
     staticSet.value.accept(this);
     HInstruction value = pop();
 
     var staticTarget = staticSet.target;
     if (staticTarget is ir.Procedure) {
       // Invoke the setter
       _pushStaticInvocation(staticTarget, <HInstruction>[value],
           astAdapter.returnTypeOf(staticTarget));
@@ skipping 698 matching lines @@
     push(new HNot(popBoolified(), backend.boolType));
   }
 
   @override
   void visitStringConcatenation(ir.StringConcatenation stringConcat) {
     KernelStringBuilder stringBuilder = new KernelStringBuilder(this);
     stringConcat.accept(stringBuilder);
     stack.add(stringBuilder.result);
   }
 }