AOT: Add a separate switchable call state for unlinked calls.

runtime/vm/precompiler.h

 // Copyright (c) 2015, 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_PRECOMPILER_H_
 #define VM_PRECOMPILER_H_
 
 #include "vm/allocation.h"
 #include "vm/hash_map.h"
 #include "vm/hash_table.h"
@@ skipping 139 matching lines @@
   }
 
   static inline bool IsKeyEqual(Pair pair, Key key) {
     return pair->Equals(*key);
   }
 };
 
 typedef DirectChainedHashMap<InstructionsKeyValueTrait> InstructionsSet;
 
 
+class UnlinkedCallKeyValueTrait {
+ public:
+  // Typedefs needed for the DirectChainedHashMap template.
+  typedef const UnlinkedCall* Key;
+  typedef const UnlinkedCall* Value;
+  typedef const UnlinkedCall* Pair;
+
+  static Key KeyOf(Pair kv) { return kv; }
+
+  static Value ValueOf(Pair kv) { return kv; }
+
+  static inline intptr_t Hashcode(Key key) {
+    return String::Handle(key->target_name()).Hash();
+  }
+
+  static inline bool IsKeyEqual(Pair pair, Key key) {
+    return (pair->target_name() == key->target_name()) &&
+        (pair->args_descriptor() == key->args_descriptor());
+  }
+};
+
+typedef DirectChainedHashMap<UnlinkedCallKeyValueTrait> UnlinkedCallSet;
+
+
 class FunctionKeyValueTrait {
  public:
   // Typedefs needed for the DirectChainedHashMap template.
   typedef const Function* Key;
   typedef const Function* Value;
   typedef const Function* Pair;
 
   static Key KeyOf(Pair kv) { return kv; }
 
   static Value ValueOf(Pair kv) { return kv; }
@@ skipping 301 matching lines @@
     return function.raw();
   }
 };
 
 typedef UnorderedHashSet<FunctionsTraits> UniqueFunctionsSet;
 
 
 }  // namespace dart
 
 #endif  // VM_PRECOMPILER_H_