Make hashCode a getter and not a method.

lib/compiler/implementation/ssa/nodes.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.
 
 abstract class HVisitor<R> {
   R visitAdd(HAdd node);
   R visitBailoutTarget(HBailoutTarget node);
   R visitBitAnd(HBitAnd node);
   R visitBitNot(HBitNot node);
   R visitBitOr(HBitOr node);
@@ skipping 447 matching lines @@
   final List<HBasicBlock> dominatedBlocks;
 
   HBasicBlock() : this.withId(null);
   HBasicBlock.withId(this.id)
       : phis = new HInstructionList(),
         predecessors = <HBasicBlock>[],
         successors = const <HBasicBlock>[],
         dominatedBlocks = <HBasicBlock>[],
         bailoutTargets = <HBailoutTarget>[];
 
-  int hashCode() => id;
+  int get hashCode => id;
 
   bool isNew() => status == STATUS_NEW;
   bool isOpen() => status == STATUS_OPEN;
   bool isClosed() => status == STATUS_CLOSED;
 
   bool isLoopHeader() {
     return loopInformation != null;
   }
 
   void setBlockFlow(HBlockInformation blockInfo, HBasicBlock continuation) {
@@ skipping 330 matching lines @@
   static const int TYPE_CONVERSION_TYPECODE = 28;
   static const int BAILOUT_TARGET_TYPECODE = 29;
   static const int INVOKE_STATIC_TYPECODE = 30;
   static const int INVOKE_DYNAMIC_GETTER_TYPECODE = 31;
   static const int INDEX_TYPECODE = 32;
 
   HInstruction(this.inputs)
       : id = idCounter++,
         usedBy = <HInstruction>[];
 
-  int hashCode() => id;
+  int get hashCode => id;
 
   bool getFlag(int position) => (flags & (1 << position)) != 0;
   void setFlag(int position) { flags |= (1 << position); }
   void clearFlag(int position) { flags &= ~(1 << position); }
 
   static int computeDependsOnFlags(int flags) => flags << FLAG_CHANGES_COUNT;
 
   int getChangesFlags() => flags & ((1 << FLAG_CHANGES_COUNT) - 1);
   bool hasSideEffects(HTypeMap types) => getChangesFlags() != 0;
   void prepareGvn(HTypeMap types) { setAllSideEffects(); }
@@ skipping 1584 matching lines @@
   void prepareGvn(HTypeMap types) {
     clearAllSideEffects();
     if (element.isAssignable()) {
       setDependsOnStaticPropertyStore();
     }
     setUseGvn();
   }
   toString() => 'static ${element.name}';
   accept(HVisitor visitor) => visitor.visitStatic(this);
 
-  int gvnHashCode() => super.gvnHashCode() ^ element.hashCode();
+  int gvnHashCode() => super.gvnHashCode() ^ element.hashCode;
   int typeCode() => HInstruction.STATIC_TYPECODE;
   bool typeEquals(other) => other is HStatic;
   bool dataEquals(HStatic other) => element == other.element;
   bool isCodeMotionInvariant() => !element.isAssignable();
 }
 
 /** An [HLazyStatic] is a static that is initialized lazily at first read. */
 class HLazyStatic extends HStatic {
   HLazyStatic(Element element) : super(element);
 
@@ skipping 539 matching lines @@
   HBasicBlock get start => expression.start;
   HBasicBlock get end {
     // We don't create a switch block if there are no cases.
     assert(!statements.isEmpty());
     return statements.last().end;
   }
 
   bool accept(HStatementInformationVisitor visitor) =>
       visitor.visitSwitchInfo(this);
 }