Include multiplication in the megamorphic cache hash to avoid cid ranges overlapping modulo table s…

runtime/vm/object.h

 // 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.
 
 #ifndef VM_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ skipping 4957 matching lines @@
   }
 
   FINAL_HEAP_OBJECT_IMPLEMENTATION(ContextScope, Object);
   friend class Class;
   friend class Object;
 };
 
 
 class MegamorphicCache : public Object {
  public:
-  static const int kInitialCapacity = 16;
+  static const intptr_t kInitialCapacity = 16;
+  static const intptr_t kSpreadFactor = 7;
   static const double kLoadFactor;
 
   RawArray* buckets() const;
   void set_buckets(const Array& buckets) const;
 
   intptr_t mask() const;
   void set_mask(intptr_t mask) const;
 
   RawString* target_name() const {
     return raw_ptr()->target_name_;
@@ skipping 3706 matching lines @@
 
 inline void TypeArguments::SetHash(intptr_t value) const {
   // This is only safe because we create a new Smi, which does not cause
   // heap allocation.
   StoreSmi(&raw_ptr()->hash_, Smi::New(value));
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_