Improve polymorphic inlining of int/int double/double operations.

runtime/vm/object.cc

 // 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.
 
 #include "vm/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/cpu.h"
@@ skipping 11323 matching lines @@
   return false;
 }
 #endif  // DEBUG
 
 
 // Used for unoptimized static calls when no class-ids are checked.
 void ICData::AddTarget(const Function& target) const {
   ASSERT(!target.IsNull());
   if (NumArgsTested() > 0) {
     // Create a fake cid entry, so that we can store the target.
-    GrowableArray<intptr_t> class_ids(NumArgsTested());
-    for (intptr_t i = 0; i < NumArgsTested(); i++) {
-      class_ids.Add(kObjectCid);
+    if (NumArgsTested() == 1) {
+      AddReceiverCheck(kObjectCid, target, 1);
+    } else {
+      GrowableArray<intptr_t> class_ids(NumArgsTested());
+      for (intptr_t i = 0; i < NumArgsTested(); i++) {
+        class_ids.Add(kObjectCid);
+      }
+      AddCheck(class_ids, target);
     }
-    AddCheck(class_ids, target);
     return;
   }
   ASSERT(NumArgsTested() >= 0);
   // Can add only once.
   const intptr_t old_num = NumberOfChecks();
   ASSERT(old_num == 0);
   Array& data = Array::Handle(ic_data());
   const intptr_t new_len = data.Length() + TestEntryLength();
   data = Array::Grow(data, new_len, Heap::kOld);
   set_ic_data(data);
@@ skipping 8124 matching lines @@
   return tag_label.ToCString();
 }
 
 
 void UserTag::PrintJSONImpl(JSONStream* stream, bool ref) const {
   Instance::PrintJSONImpl(stream, ref);
 }
 
 
 }  // namespace dart