More ICData cleanups: try to use ICData instead of converting it to another intermediate representa…

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 "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/bigint_operations.h"
 #include "vm/bootstrap.h"
@@ skipping 6640 matching lines @@
 
 
 intptr_t ICData::NumberOfChecks() const {
   // Do not count the sentinel;
   return (Array::Handle(ic_data()).Length() / TestEntryLength()) - 1;
 }
 
 
 void ICData::AddCheck(const GrowableArray<intptr_t>& class_ids,
                       const Function& target) const {
+  ASSERT(num_args_tested() > 1);  // Otherwise use 'AddReceiverCheck'.
   ASSERT(class_ids.length() == num_args_tested());
   intptr_t old_num = NumberOfChecks();
   Array& data = Array::Handle(ic_data());
   intptr_t new_len = data.Length() + TestEntryLength();
   data = Array::Grow(data, new_len, Heap::kOld);
   set_ic_data(data);
   intptr_t data_pos = old_num * TestEntryLength();
   for (intptr_t i = 0; i < class_ids.length(); i++) {
     // Null is used as terminating value, do not add it.
     ASSERT(class_ids[i] != kNullClass);
+    ASSERT(class_ids[i] != kIllegalObjectKind);
     data.SetAt(data_pos++, Smi::Handle(Smi::New(class_ids[i])));
   }
   ASSERT(!target.IsNull());
   data.SetAt(data_pos, target);
 }
 
 
+void ICData::AddReceiverCheck(intptr_t receiver_class_id,
+                              const Function& target) const {
+  ASSERT(num_args_tested() == 1);  // Otherwise use 'AddCheck'.
+  // Not supporting collection of null receivers.
+  ASSERT(receiver_class_id != kNullClass);
+  ASSERT(receiver_class_id != kIllegalObjectKind);
+  ASSERT(!target.IsNull());
+
+  intptr_t old_num = NumberOfChecks();
+  Array& data = Array::Handle(ic_data());
+  intptr_t new_len = data.Length() + TestEntryLength();
+  data = Array::Grow(data, new_len, Heap::kOld);
+  set_ic_data(data);
+  intptr_t data_pos = old_num * TestEntryLength();
+  if ((receiver_class_id == kSmi) && (data_pos > 0)) {
+    // Instert kSmi in position 0.
+    const intptr_t zero_class_id = GetReceiverClassIdAt(0);
+    ASSERT(zero_class_id != kSmi);  // Simple duplicate entry check.
+    const Function& zero_target = Function::Handle(GetTargetAt(0));
+    data.SetAt(0, Smi::Handle(Smi::New(receiver_class_id)));
+    data.SetAt(1, target);
+    data.SetAt(data_pos, Smi::Handle(Smi::New(zero_class_id)));
+    data.SetAt(data_pos + 1, zero_target);
+  } else {
+    data.SetAt(data_pos, Smi::Handle(Smi::New(receiver_class_id)));
+    data.SetAt(data_pos + 1, target);
+  }
+}
+
+
 void ICData::GetCheckAt(intptr_t index,
                         GrowableArray<intptr_t>* class_ids,
                         Function* target) const {
   ASSERT(class_ids != NULL);
   ASSERT(target != NULL);
   class_ids->Clear();
   const Array& data = Array::Handle(ic_data());
   intptr_t data_pos = index * TestEntryLength();
   Smi& smi = Smi::Handle();
   for (intptr_t i = 0; i < num_args_tested(); i++) {
@@ skipping 11 matching lines @@
   ASSERT(num_args_tested() == 1);
   const Array& data = Array::Handle(ic_data());
   intptr_t data_pos = index * TestEntryLength();
   Smi& smi = Smi::Handle();
   smi ^= data.At(data_pos);
   *class_id = smi.Value();
   *target ^= data.At(data_pos + 1);
 }
 
 
+intptr_t ICData::GetReceiverClassIdAt(intptr_t index) const {
+  const Array& data = Array::Handle(ic_data());
+  const intptr_t data_pos = index * TestEntryLength();
+  Smi& smi = Smi::Handle();
+  smi ^= data.At(data_pos);
+  return smi.Value();
+}
+
+
+RawFunction* ICData::GetTargetAt(intptr_t index) const {
+  const Array& data = Array::Handle(ic_data());
+  const intptr_t data_pos = index * TestEntryLength() + num_args_tested();
+  Function& target = Function::Handle();
+  target ^= data.At(data_pos);
+  return target.raw();
+}
+
+
 RawICData* ICData::New(const Function& function,
                        const String& target_name,
                        intptr_t id,
                        intptr_t num_args_tested) {
   ASSERT(num_args_tested > 0);
   const Class& cls = Class::Handle(Object::icdata_class());
   ASSERT(!cls.IsNull());
   ICData& result = ICData::Handle();
   {
     // IC data objects are long living objects, allocate them in old generation.
@@ skipping 3409 matching lines @@
   const String& str = String::Handle(pattern());
   const char* format = "JSRegExp: pattern=%s flags=%s";
   intptr_t len = OS::SNPrint(NULL, 0, format, str.ToCString(), Flags());
   char* chars = reinterpret_cast<char*>(
       Isolate::Current()->current_zone()->Allocate(len + 1));
   OS::SNPrint(chars, (len + 1), format, str.ToCString(), Flags());
   return chars;
 }
 
 }  // namespace dart