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// Copyright 2018 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.
#include "src/compiler/js-heap-copy-reducer.h"
#include "src/compiler/common-operator.h"
#include "src/compiler/js-heap-broker.h"
#include "src/compiler/js-operator.h"
#include "src/compiler/node-properties.h"
#include "src/compiler/simplified-operator.h"
#include "src/heap/factory-inl.h"
#include "src/objects/map.h"
#include "src/objects/scope-info.h"
#include "src/objects/template-objects.h"
namespace v8 {
namespace internal {
namespace compiler {
// In the functions below, we call the ObjectRef (or subclass) constructor in
// order to trigger serialization if not yet done.
JSHeapCopyReducer::JSHeapCopyReducer(JSHeapBroker* broker) : broker_(broker) {}
JSHeapBroker* JSHeapCopyReducer::broker() { return broker_; }
Reduction JSHeapCopyReducer::Reduce(Node* node) {
switch (node->opcode()) {
case IrOpcode::kCheckClosure: {
FeedbackCellRef cell(broker(), FeedbackCellOf(node->op()));
FeedbackVectorRef feedback_vector = cell.value().AsFeedbackVector();
feedback_vector.Serialize();
break;
}
case IrOpcode::kHeapConstant: {
ObjectRef object(broker(), HeapConstantOf(node->op()));
if (object.IsJSFunction()) object.AsJSFunction().Serialize();
if (object.IsJSObject()) {
object.AsJSObject().SerializeObjectCreateMap();
}
if (object.IsSourceTextModule()) {
object.AsSourceTextModule().Serialize();
}
break;
}
case IrOpcode::kJSCreateArray: {
CreateArrayParameters const& p = CreateArrayParametersOf(node->op());
Handle<AllocationSite> site;
if (p.site().ToHandle(&site)) AllocationSiteRef(broker(), site);
break;
}
case IrOpcode::kJSCreateArguments: {
Node* const frame_state = NodeProperties::GetFrameStateInput(node);
FrameStateInfo state_info = FrameStateInfoOf(frame_state->op());
SharedFunctionInfoRef shared(broker(),
state_info.shared_info().ToHandleChecked());
break;
}
case IrOpcode::kJSCreateBlockContext: {
ScopeInfoRef(broker(), ScopeInfoOf(node->op()));
break;
}
case IrOpcode::kJSCreateBoundFunction: {
CreateBoundFunctionParameters const& p =
CreateBoundFunctionParametersOf(node->op());
MapRef(broker(), p.map());
break;
}
case IrOpcode::kJSCreateCatchContext: {
ScopeInfoRef(broker(), ScopeInfoOf(node->op()));
break;
}
case IrOpcode::kJSCreateClosure: {
CreateClosureParameters const& p = CreateClosureParametersOf(node->op());
SharedFunctionInfoRef(broker(), p.shared_info());
HeapObjectRef(broker(), p.code());
break;
}
case IrOpcode::kJSCreateEmptyLiteralArray: {
FeedbackParameter const& p = FeedbackParameterOf(node->op());
if (p.feedback().IsValid()) {
broker()->ProcessFeedbackForArrayOrObjectLiteral(p.feedback());
}
break;
}
/* Unary ops. */
case IrOpcode::kJSBitwiseNot:
case IrOpcode::kJSDecrement:
case IrOpcode::kJSIncrement:
case IrOpcode::kJSNegate: {
FeedbackParameter const& p = FeedbackParameterOf(node->op());
if (p.feedback().IsValid()) {
// Unary ops are treated as binary ops with respect to feedback.
broker()->ProcessFeedbackForBinaryOperation(p.feedback());
}
break;
}
/* Binary ops. */
case IrOpcode::kJSAdd:
case IrOpcode::kJSSubtract:
case IrOpcode::kJSMultiply:
case IrOpcode::kJSDivide:
case IrOpcode::kJSModulus:
case IrOpcode::kJSExponentiate:
case IrOpcode::kJSBitwiseOr:
case IrOpcode::kJSBitwiseXor:
case IrOpcode::kJSBitwiseAnd:
case IrOpcode::kJSShiftLeft:
case IrOpcode::kJSShiftRight:
case IrOpcode::kJSShiftRightLogical: {
FeedbackParameter const& p = FeedbackParameterOf(node->op());
if (p.feedback().IsValid()) {
broker()->ProcessFeedbackForBinaryOperation(p.feedback());
}
break;
}
/* Compare ops. */
case IrOpcode::kJSEqual:
case IrOpcode::kJSGreaterThan:
case IrOpcode::kJSGreaterThanOrEqual:
case IrOpcode::kJSLessThan:
case IrOpcode::kJSLessThanOrEqual:
case IrOpcode::kJSStrictEqual: {
FeedbackParameter const& p = FeedbackParameterOf(node->op());
if (p.feedback().IsValid()) {
broker()->ProcessFeedbackForCompareOperation(p.feedback());
}
break;
}
case IrOpcode::kJSCreateFunctionContext: {
CreateFunctionContextParameters const& p =
CreateFunctionContextParametersOf(node->op());
ScopeInfoRef(broker(), p.scope_info());
break;
}
case IrOpcode::kJSCreateLiteralArray:
case IrOpcode::kJSCreateLiteralObject: {
CreateLiteralParameters const& p = CreateLiteralParametersOf(node->op());
if (p.feedback().IsValid()) {
broker()->ProcessFeedbackForArrayOrObjectLiteral(p.feedback());
}
break;
}
case IrOpcode::kJSCreateLiteralRegExp: {
CreateLiteralParameters const& p = CreateLiteralParametersOf(node->op());
if (p.feedback().IsValid()) {
broker()->ProcessFeedbackForRegExpLiteral(p.feedback());
}
break;
}
case IrOpcode::kJSGetTemplateObject: {
GetTemplateObjectParameters const& p =
GetTemplateObjectParametersOf(node->op());
SharedFunctionInfoRef shared(broker(), p.shared());
TemplateObjectDescriptionRef description(broker(), p.description());
shared.GetTemplateObject(description, p.feedback(),
SerializationPolicy::kSerializeIfNeeded);
break;
}
case IrOpcode::kJSCreateWithContext: {
ScopeInfoRef(broker(), ScopeInfoOf(node->op()));
break;
}
case IrOpcode::kJSLoadNamed: {
NamedAccess const& p = NamedAccessOf(node->op());
NameRef name(broker(), p.name());
if (p.feedback().IsValid()) {
broker()->ProcessFeedbackForPropertyAccess(p.feedback(),
AccessMode::kLoad, name);
}
break;
}
case IrOpcode::kJSLoadNamedFromSuper: {
NamedAccess const& p = NamedAccessOf(node->op());
NameRef name(broker(), p.name());
if (p.feedback().IsValid()) {
broker()->ProcessFeedbackForPropertyAccess(p.feedback(),
AccessMode::kLoad, name);
}
break;
}
case IrOpcode::kJSStoreNamed: {
NamedAccess const& p = NamedAccessOf(node->op());
NameRef name(broker(), p.name());
break;
}
case IrOpcode::kStoreField:
case IrOpcode::kLoadField: {
FieldAccess access = FieldAccessOf(node->op());
Handle<Map> map_handle;
if (access.map.ToHandle(&map_handle)) {
MapRef(broker(), map_handle);
}
Handle<Name> name_handle;
if (access.name.ToHandle(&name_handle)) {
NameRef(broker(), name_handle);
}
break;
}
case IrOpcode::kMapGuard: {
ZoneHandleSet<Map> const& maps = MapGuardMapsOf(node->op());
for (Handle<Map> map : maps) {
MapRef(broker(), map);
}
break;
}
case IrOpcode::kCheckMaps: {
ZoneHandleSet<Map> const& maps = CheckMapsParametersOf(node->op()).maps();
for (Handle<Map> map : maps) {
MapRef(broker(), map);
}
break;
}
case IrOpcode::kCompareMaps: {
ZoneHandleSet<Map> const& maps = CompareMapsParametersOf(node->op());
for (Handle<Map> map : maps) {
MapRef(broker(), map);
}
break;
}
case IrOpcode::kJSLoadProperty: {
PropertyAccess const& p = PropertyAccessOf(node->op());
AccessMode access_mode = AccessMode::kLoad;
if (p.feedback().IsValid()) {
broker()->ProcessFeedbackForPropertyAccess(p.feedback(), access_mode,
base::nullopt);
}
break;
}
default:
break;
}
return NoChange();
}
} // namespace compiler
} // namespace internal
} // namespace v8
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