text: // Copyright 2012 the V8 project authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  
  #ifndef V8_IC_IC_INL_H_
  #define V8_IC_IC_INL_H_
  
  #include "src/ic/ic.h"
  
  #include "src/assembler-inl.h"
  #include "src/debug/debug.h"
  #include "src/frames-inl.h"
  #include "src/handles-inl.h"
  #include "src/prototype.h"
  
  namespace v8 {
  namespace internal {
  
  
  Address IC::address() const {
    // Get the address of the call.
    return Assembler::target_address_from_return_address(pc());
  }
  
  
  Address IC::constant_pool() const {
    if (FLAG_enable_embedded_constant_pool) {
      return raw_constant_pool();
    } else {
      return kNullAddress;
    }
  }
  
  
  Address IC::raw_constant_pool() const {
    if (FLAG_enable_embedded_constant_pool) {
      return *constant_pool_address_;
    } else {
      return kNullAddress;
    }
  }
  
  void IC::update_receiver_map(Handle<Object> receiver) {
    if (receiver->IsSmi()) {
      receiver_map_ = isolate_->factory()->heap_number_map();
    } else {
      receiver_map_ = handle(HeapObject::cast(*receiver)->map(), isolate_);
    }
  }
  
  bool IC::IsHandler(MaybeObject object) {
    HeapObject heap_object;
    return (object->IsSmi() && (object.ptr() != kNullAddress)) ||
           (object->GetHeapObjectIfWeak(&heap_object) &&
            (heap_object->IsMap() || heap_object->IsPropertyCell())) ||
           (object->GetHeapObjectIfStrong(&heap_object) &&
            (heap_object->IsDataHandler() || heap_object->IsCode()));
  }
  
  bool IC::AddressIsDeoptimizedCode() const {
    return AddressIsDeoptimizedCode(isolate(), address());
  }
  
  // static
  bool IC::AddressIsDeoptimizedCode(Isolate* isolate, Address address) {
    Code host =
        isolate->inner_pointer_to_code_cache()->GetCacheEntry(address)->code;
    return (host->kind() == Code::OPTIMIZED_FUNCTION &&
            host->marked_for_deoptimization());
  }
  
  bool IC::vector_needs_update() {
    if (state() == NO_FEEDBACK) return false;
    return (!vector_set_ &&
            (state() != MEGAMORPHIC ||
             nexus()->GetFeedbackExtra().ToSmi().value() != ELEMENT));
  }
  
  }  // namespace internal
  }  // namespace v8
  
  #endif  // V8_IC_IC_INL_H_
  