Fix bad generate-at-use-site.

sdk/lib/_internal/compiler/implementation/ssa/builder.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.
 
 part of ssa;
 
 /**
  * A special element for the extra parameter taken by intercepted
  * methods. We need to implement [TypedElement.type] because our
  * optimizers may look at its declared type.
@@ skipping 867 matching lines @@
       builder.jumpTargets.remove(target);
     }
     super.close();
   }
 }
 
 /**
  * This class builds SSA nodes for functions represented in AST.
  */
 class SsaBuilder extends ResolvedVisitor {
-  final Compiler compiler;
   final JavaScriptBackend backend;
   final ConstantSystem constantSystem;
   final CodegenWorkItem work;
   final RuntimeTypes rti;
 
   /* This field is used by the native handler. */
   final NativeEmitter nativeEmitter;
 
   final HGraph graph = new HGraph();
 
@@ skipping 58 matching lines @@
    * Variables stored in the current activation. These variables are
    * being updated in try/catch blocks, and should be
    * accessed indirectly through [HLocalGet] and [HLocalSet].
    */
   Map<Element, HLocalValue> activationVariables = <Element, HLocalValue>{};
 
   // We build the Ssa graph by simulating a stack machine.
   List<HInstruction> stack = <HInstruction>[];
 
   SsaBuilder(JavaScriptBackend backend,
-                    CodegenWorkItem work,
-                    this.nativeEmitter)
+             CodegenWorkItem work,
+             this.nativeEmitter)
     : this.backend = backend,
-      this.compiler = backend.compiler,
       this.constantSystem = backend.constantSystem,
       this.work = work,
       this.rti = backend.rti,
       super(work.resolutionTree, backend.compiler) {
     localsHandler = new LocalsHandler(this);
     sourceElementStack.add(work.element);
   }
 
   Element get sourceElement => sourceElementStack.last;
 
@@ skipping 5135 matching lines @@
     DartType unaliased = type.unalias(builder.compiler);
     if (unaliased is TypedefType) throw 'unable to unalias $type';
     unaliased.accept(this, builder);
   }
 
   void visitDynamicType(DynamicType type, SsaBuilder builder) {
     ClassElement cls = builder.compiler.findHelper('DynamicRuntimeType');
     builder.push(new HDynamicType(type, new TypeMask.exact(cls)));
   }
 }