More reduction of accessing TLS by caching/passing isolate value.

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 11071 matching lines @@
 intptr_t ICData::GetClassIdAt(intptr_t index, intptr_t arg_nr) const {
   GrowableArray<intptr_t> class_ids;
   Function& target = Function::Handle();
   GetCheckAt(index, &class_ids, &target);
   return class_ids[arg_nr];
 }
 
 
 intptr_t ICData::GetReceiverClassIdAt(intptr_t index) const {
   ASSERT(index < NumberOfChecks());
-  const Array& data = Array::Handle(ic_data());
   const intptr_t data_pos = index * TestEntryLength();
-  return Smi::Value(Smi::RawCast(data.At(data_pos)));
+  NoGCScope no_gc;
+  RawArray* raw_data = ic_data();
+  return Smi::Value(Smi::RawCast(raw_data->ptr()->data()[data_pos]));
 }
 
 
 RawFunction* ICData::GetTargetAt(intptr_t index) const {
   const intptr_t data_pos = index * TestEntryLength() + NumArgsTested();
   ASSERT(Object::Handle(Array::Handle(ic_data()).At(data_pos)).IsFunction());
 
   NoGCScope no_gc;
   RawArray* raw_data = ic_data();
   return reinterpret_cast<RawFunction*>(raw_data->ptr()->data()[data_pos]);
@@ skipping 7804 matching lines @@
   return tag_label.ToCString();
 }
 
 
 void UserTag::PrintJSONImpl(JSONStream* stream, bool ref) const {
   Instance::PrintJSONImpl(stream, ref);
 }
 
 
 }  // namespace dart