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// Copyright 2016 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_HANDLER_CONFIGURATION_INL_H_
#define V8_IC_HANDLER_CONFIGURATION_INL_H_
#include "src/ic/handler-configuration.h"
#include "src/field-index-inl.h"
#include "src/objects-inl.h"
namespace v8 {
namespace internal {
Handle<Object> LoadHandler::LoadField(Isolate* isolate,
FieldIndex field_index) {
int config = KindBits::encode(kForFields) |
IsInobjectBits::encode(field_index.is_inobject()) |
IsDoubleBits::encode(field_index.is_double()) |
FieldOffsetBits::encode(field_index.offset());
return handle(Smi::FromInt(config), isolate);
}
Handle<Object> LoadHandler::LoadConstant(Isolate* isolate, int descriptor) {
int config = KindBits::encode(kForConstants) |
IsAccessorInfoBits::encode(false) |
DescriptorValueIndexBits::encode(
DescriptorArray::ToValueIndex(descriptor));
return handle(Smi::FromInt(config), isolate);
}
Handle<Object> LoadHandler::LoadApiGetter(Isolate* isolate, int descriptor) {
int config = KindBits::encode(kForConstants) |
IsAccessorInfoBits::encode(true) |
DescriptorValueIndexBits::encode(
DescriptorArray::ToValueIndex(descriptor));
return handle(Smi::FromInt(config), isolate);
}
Handle<Object> LoadHandler::EnableAccessCheckOnReceiver(
Isolate* isolate, Handle<Object> smi_handler) {
int config = Smi::cast(*smi_handler)->value();
#ifdef DEBUG
Kind kind = KindBits::decode(config);
DCHECK_NE(kForElements, kind);
#endif
config = DoAccessCheckOnReceiverBits::update(config, true);
return handle(Smi::FromInt(config), isolate);
}
Handle<Object> LoadHandler::EnableNegativeLookupOnReceiver(
Isolate* isolate, Handle<Object> smi_handler) {
int config = Smi::cast(*smi_handler)->value();
#ifdef DEBUG
Kind kind = KindBits::decode(config);
DCHECK_NE(kForElements, kind);
#endif
config = DoNegativeLookupOnReceiverBits::update(config, true);
return handle(Smi::FromInt(config), isolate);
}
Handle<Object> LoadHandler::LoadNonExistent(
Isolate* isolate, bool do_negative_lookup_on_receiver) {
int config =
KindBits::encode(kForNonExistent) |
DoNegativeLookupOnReceiverBits::encode(do_negative_lookup_on_receiver);
return handle(Smi::FromInt(config), isolate);
}
Handle<Object> LoadHandler::LoadElement(Isolate* isolate,
ElementsKind elements_kind,
bool convert_hole_to_undefined,
bool is_js_array) {
int config = KindBits::encode(kForElements) |
ElementsKindBits::encode(elements_kind) |
ConvertHoleBits::encode(convert_hole_to_undefined) |
IsJsArrayBits::encode(is_js_array);
return handle(Smi::FromInt(config), isolate);
}
Handle<Object> StoreHandler::StoreField(Isolate* isolate, Kind kind,
int descriptor, FieldIndex field_index,
Representation representation,
bool extend_storage) {
StoreHandler::FieldRepresentation field_rep;
switch (representation.kind()) {
case Representation::kSmi:
field_rep = StoreHandler::kSmi;
break;
case Representation::kDouble:
field_rep = StoreHandler::kDouble;
break;
case Representation::kHeapObject:
field_rep = StoreHandler::kHeapObject;
break;
case Representation::kTagged:
field_rep = StoreHandler::kTagged;
break;
default:
UNREACHABLE();
return Handle<Object>::null();
}
int value_index = DescriptorArray::ToValueIndex(descriptor);
DCHECK(kind == kStoreField || kind == kTransitionToField);
DCHECK_IMPLIES(kind == kStoreField, !extend_storage);
int config = StoreHandler::KindBits::encode(kind) |
StoreHandler::ExtendStorageBits::encode(extend_storage) |
StoreHandler::IsInobjectBits::encode(field_index.is_inobject()) |
StoreHandler::FieldRepresentationBits::encode(field_rep) |
StoreHandler::DescriptorValueIndexBits::encode(value_index) |
StoreHandler::FieldOffsetBits::encode(field_index.offset());
return handle(Smi::FromInt(config), isolate);
}
Handle<Object> StoreHandler::StoreField(Isolate* isolate, int descriptor,
FieldIndex field_index,
Representation representation) {
return StoreField(isolate, kStoreField, descriptor, field_index,
representation, false);
}
Handle<Object> StoreHandler::TransitionToField(Isolate* isolate, int descriptor,
FieldIndex field_index,
Representation representation,
bool extend_storage) {
return StoreField(isolate, kTransitionToField, descriptor, field_index,
representation, extend_storage);
}
Handle<Object> StoreHandler::TransitionToConstant(Isolate* isolate,
int descriptor) {
int value_index = DescriptorArray::ToValueIndex(descriptor);
int config =
StoreHandler::KindBits::encode(StoreHandler::kTransitionToConstant) |
StoreHandler::DescriptorValueIndexBits::encode(value_index);
return handle(Smi::FromInt(config), isolate);
}
} // namespace internal
} // namespace v8
#endif // V8_IC_HANDLER_CONFIGURATION_INL_H_
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