Change static calls in unoptimized code to always call via a stub. Using ICData, the call count of …

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 8511 matching lines @@
     }
     if (matches) {
       return true;
     }
   }
   return false;
 }
 #endif  // DEBUG
 
 
+// Used for unoptimized static calls when no class-ids are checked.
+void ICData::AddTarget(const Function& target) const {
+  ASSERT(num_args_tested() == 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);
+  WriteSentinel(data);
+  intptr_t data_pos = old_num * TestEntryLength();
+  ASSERT(!target.IsNull());
+  data.SetAt(data_pos++, target);
+  const Smi& value = Smi::Handle(Smi::New(0));
+  data.SetAt(data_pos, value);
+}
+
+
 void ICData::AddCheck(const GrowableArray<intptr_t>& class_ids,
                       const Function& target) const {
   DEBUG_ASSERT(!HasCheck(class_ids));
   ASSERT(num_args_tested() > 1);  // Otherwise use 'AddReceiverCheck'.
   ASSERT(class_ids.length() == num_args_tested());
   const intptr_t old_num = NumberOfChecks();
   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 250 matching lines @@
   return true;
 }
 
 
 RawICData* ICData::New(const Function& function,
                        const String& target_name,
                        const Array& arguments_descriptor,
                        intptr_t deopt_id,
                        intptr_t num_args_tested) {
   ASSERT(Object::icdata_class() != Class::null());
-  ASSERT(num_args_tested > 0);
+  ASSERT(num_args_tested >= 0);
   ICData& result = ICData::Handle();
   {
     // IC data objects are long living objects, allocate them in old generation.
     RawObject* raw = Object::Allocate(ICData::kClassId,
                                       ICData::InstanceSize(),
                                       Heap::kOld);
     NoGCScope no_gc;
     result ^= raw;
   }
   result.set_function(function);
@@ skipping 4816 matching lines @@
                                     space);
   return reinterpret_cast<RawWeakProperty*>(raw);
 }
 
 
 const char* WeakProperty::ToCString() const {
   return "_WeakProperty";
 }
 
 }  // namespace dart