Access ConstantSystem through ClosedWorld.

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

 // Copyright (c) 2012, 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 '../compiler.dart' show Compiler;
 import '../constants/values.dart';
 import '../elements/elements.dart';
 import '../js_backend/js_backend.dart';
 import '../types/types.dart';
 import '../universe/selector.dart' show Selector;
@@ skipping 129 matching lines @@
     // This assignment of inputs is uniform for HInvokeDynamic and HInvokeSuper.
     HInstruction interceptor = node.inputs[0];
     HInstruction receiverArgument = node.inputs[1];
 
     if (interceptor.nonCheck() == receiverArgument.nonCheck()) {
       if (backend.isInterceptedSelector(selector) &&
           !backend.isInterceptedMixinSelector(selector, mask)) {
         ConstantValue constant = new SyntheticConstantValue(
             SyntheticConstantKind.DUMMY_INTERCEPTOR,
             receiverArgument.instructionType);
-        HConstant dummy = graph.addConstant(constant, compiler);
+        HConstant dummy = graph.addConstant(constant, closedWorld);
         receiverArgument.usedBy.remove(node);
         node.inputs[1] = dummy;
         dummy.usedBy.add(node);
       }
     }
   }
 
   HInstruction visitFieldSet(HFieldSet setter) {
     // Pattern match
     //     t1 = x.f; t2 = t1 + 1; x.f = t2; use(t2)   -->  ++x.f
@@ skipping 636 matching lines @@
     }
 
     // If [thenInput] is defined in the first predecessor, then it is only used
     // by [phi] and can be generated at use site.
     if (identical(thenInput.block, end.predecessors[0])) {
       assert(thenInput.usedBy.length == 1);
       markAsGenerateAtUseSite(thenInput);
     }
   }
 }