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Issue 894683003: Introduce LanguageMode, drop StrictMode. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: . Created 5 years, 10 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "src/v8.h" 5 #include "src/v8.h"
6 6
7 #if V8_TARGET_ARCH_X64 7 #if V8_TARGET_ARCH_X64
8 8
9 #include "src/code-factory.h" 9 #include "src/code-factory.h"
10 #include "src/code-stubs.h" 10 #include "src/code-stubs.h"
(...skipping 96 matching lines...)
107 #ifdef DEBUG 107 #ifdef DEBUG
108 if (strlen(FLAG_stop_at) > 0 && 108 if (strlen(FLAG_stop_at) > 0 &&
109 info->function()->name()->IsUtf8EqualTo(CStrVector(FLAG_stop_at))) { 109 info->function()->name()->IsUtf8EqualTo(CStrVector(FLAG_stop_at))) {
110 __ int3(); 110 __ int3();
111 } 111 }
112 #endif 112 #endif
113 113
114 // Sloppy mode functions and builtins need to replace the receiver with the 114 // Sloppy mode functions and builtins need to replace the receiver with the
115 // global proxy when called as functions (without an explicit receiver 115 // global proxy when called as functions (without an explicit receiver
116 // object). 116 // object).
117 if (info->strict_mode() == SLOPPY && !info->is_native()) { 117 if (!is_strict(info->language_mode()) && !info->is_native()) {
118 Label ok; 118 Label ok;
119 // +1 for return address. 119 // +1 for return address.
120 StackArgumentsAccessor args(rsp, info->scope()->num_parameters()); 120 StackArgumentsAccessor args(rsp, info->scope()->num_parameters());
121 __ movp(rcx, args.GetReceiverOperand()); 121 __ movp(rcx, args.GetReceiverOperand());
122 122
123 __ CompareRoot(rcx, Heap::kUndefinedValueRootIndex); 123 __ CompareRoot(rcx, Heap::kUndefinedValueRootIndex);
124 __ j(not_equal, &ok, Label::kNear); 124 __ j(not_equal, &ok, Label::kNear);
125 125
126 __ movp(rcx, GlobalObjectOperand()); 126 __ movp(rcx, GlobalObjectOperand());
127 __ movp(rcx, FieldOperand(rcx, GlobalObject::kGlobalProxyOffset)); 127 __ movp(rcx, FieldOperand(rcx, GlobalObject::kGlobalProxyOffset));
(...skipping 120 matching lines...)
248 int offset = num_parameters * kPointerSize; 248 int offset = num_parameters * kPointerSize;
249 __ leap(rdx, 249 __ leap(rdx,
250 Operand(rbp, StandardFrameConstants::kCallerSPOffset + offset)); 250 Operand(rbp, StandardFrameConstants::kCallerSPOffset + offset));
251 __ Push(rdx); 251 __ Push(rdx);
252 __ Push(Smi::FromInt(num_parameters)); 252 __ Push(Smi::FromInt(num_parameters));
253 // Arguments to ArgumentsAccessStub: 253 // Arguments to ArgumentsAccessStub:
254 // function, receiver address, parameter count. 254 // function, receiver address, parameter count.
255 // The stub will rewrite receiver and parameter count if the previous 255 // The stub will rewrite receiver and parameter count if the previous
256 // stack frame was an arguments adapter frame. 256 // stack frame was an arguments adapter frame.
257 ArgumentsAccessStub::Type type; 257 ArgumentsAccessStub::Type type;
258 if (strict_mode() == STRICT) { 258 if (is_strict(language_mode())) {
259 type = ArgumentsAccessStub::NEW_STRICT; 259 type = ArgumentsAccessStub::NEW_STRICT;
260 } else if (function()->has_duplicate_parameters()) { 260 } else if (function()->has_duplicate_parameters()) {
261 type = ArgumentsAccessStub::NEW_SLOPPY_SLOW; 261 type = ArgumentsAccessStub::NEW_SLOPPY_SLOW;
262 } else { 262 } else {
263 type = ArgumentsAccessStub::NEW_SLOPPY_FAST; 263 type = ArgumentsAccessStub::NEW_SLOPPY_FAST;
264 } 264 }
265 ArgumentsAccessStub stub(isolate(), type); 265 ArgumentsAccessStub stub(isolate(), type);
266 __ CallStub(&stub); 266 __ CallStub(&stub);
267 267
268 SetVar(arguments, rax, rbx, rdx); 268 SetVar(arguments, rax, rbx, rdx);
(...skipping 980 matching lines...)
1249 // space for nested functions that don't need literals cloning. If 1249 // space for nested functions that don't need literals cloning. If
1250 // we're running with the --always-opt or the --prepare-always-opt 1250 // we're running with the --always-opt or the --prepare-always-opt
1251 // flag, we need to use the runtime function so that the new function 1251 // flag, we need to use the runtime function so that the new function
1252 // we are creating here gets a chance to have its code optimized and 1252 // we are creating here gets a chance to have its code optimized and
1253 // doesn't just get a copy of the existing unoptimized code. 1253 // doesn't just get a copy of the existing unoptimized code.
1254 if (!FLAG_always_opt && 1254 if (!FLAG_always_opt &&
1255 !FLAG_prepare_always_opt && 1255 !FLAG_prepare_always_opt &&
1256 !pretenure && 1256 !pretenure &&
1257 scope()->is_function_scope() && 1257 scope()->is_function_scope() &&
1258 info->num_literals() == 0) { 1258 info->num_literals() == 0) {
1259 FastNewClosureStub stub(isolate(), info->strict_mode(), info->kind()); 1259 FastNewClosureStub stub(isolate(), info->language_mode(), info->kind());
1260 __ Move(rbx, info); 1260 __ Move(rbx, info);
1261 __ CallStub(&stub); 1261 __ CallStub(&stub);
1262 } else { 1262 } else {
1263 __ Push(rsi); 1263 __ Push(rsi);
1264 __ Push(info); 1264 __ Push(info);
1265 __ Push(pretenure 1265 __ Push(pretenure
1266 ? isolate()->factory()->true_value() 1266 ? isolate()->factory()->true_value()
1267 : isolate()->factory()->false_value()); 1267 : isolate()->factory()->false_value());
1268 __ CallRuntime(Runtime::kNewClosure, 3); 1268 __ CallRuntime(Runtime::kNewClosure, 3);
1269 } 1269 }
(...skipping 422 matching lines...)
1692 } else { 1692 } else {
1693 VisitForEffect(value); 1693 VisitForEffect(value);
1694 } 1694 }
1695 break; 1695 break;
1696 } 1696 }
1697 __ Push(Operand(rsp, 0)); // Duplicate receiver. 1697 __ Push(Operand(rsp, 0)); // Duplicate receiver.
1698 VisitForStackValue(key); 1698 VisitForStackValue(key);
1699 VisitForStackValue(value); 1699 VisitForStackValue(value);
1700 if (property->emit_store()) { 1700 if (property->emit_store()) {
1701 EmitSetHomeObjectIfNeeded(value, 2); 1701 EmitSetHomeObjectIfNeeded(value, 2);
1702 __ Push(Smi::FromInt(SLOPPY)); // Strict mode 1702 __ Push(Smi::FromInt(SLOPPY)); // Language mode
1703 __ CallRuntime(Runtime::kSetProperty, 4); 1703 __ CallRuntime(Runtime::kSetProperty, 4);
1704 } else { 1704 } else {
1705 __ Drop(3); 1705 __ Drop(3);
1706 } 1706 }
1707 break; 1707 break;
1708 case ObjectLiteral::Property::PROTOTYPE: 1708 case ObjectLiteral::Property::PROTOTYPE:
1709 __ Push(Operand(rsp, 0)); // Duplicate receiver. 1709 __ Push(Operand(rsp, 0)); // Duplicate receiver.
1710 VisitForStackValue(value); 1710 VisitForStackValue(value);
1711 DCHECK(property->emit_store()); 1711 DCHECK(property->emit_store());
1712 __ CallRuntime(Runtime::kInternalSetPrototype, 2); 1712 __ CallRuntime(Runtime::kInternalSetPrototype, 2);
(...skipping 850 matching lines...)
2563 break; 2563 break;
2564 } 2564 }
2565 case KEYED_PROPERTY: { 2565 case KEYED_PROPERTY: {
2566 __ Push(rax); // Preserve value. 2566 __ Push(rax); // Preserve value.
2567 VisitForStackValue(prop->obj()); 2567 VisitForStackValue(prop->obj());
2568 VisitForAccumulatorValue(prop->key()); 2568 VisitForAccumulatorValue(prop->key());
2569 __ Move(StoreDescriptor::NameRegister(), rax); 2569 __ Move(StoreDescriptor::NameRegister(), rax);
2570 __ Pop(StoreDescriptor::ReceiverRegister()); 2570 __ Pop(StoreDescriptor::ReceiverRegister());
2571 __ Pop(StoreDescriptor::ValueRegister()); // Restore value. 2571 __ Pop(StoreDescriptor::ValueRegister()); // Restore value.
2572 Handle<Code> ic = 2572 Handle<Code> ic =
2573 CodeFactory::KeyedStoreIC(isolate(), strict_mode()).code(); 2573 CodeFactory::KeyedStoreIC(isolate(), language_mode()).code();
2574 CallIC(ic); 2574 CallIC(ic);
2575 break; 2575 break;
2576 } 2576 }
2577 } 2577 }
2578 context()->Plug(rax); 2578 context()->Plug(rax);
2579 } 2579 }
2580 2580
2581 2581
2582 void FullCodeGenerator::EmitStoreToStackLocalOrContextSlot( 2582 void FullCodeGenerator::EmitStoreToStackLocalOrContextSlot(
2583 Variable* var, MemOperand location) { 2583 Variable* var, MemOperand location) {
(...skipping 46 matching lines...)
2630 __ CallRuntime(Runtime::kThrowReferenceError, 1); 2630 __ CallRuntime(Runtime::kThrowReferenceError, 1);
2631 __ bind(&assign); 2631 __ bind(&assign);
2632 EmitStoreToStackLocalOrContextSlot(var, location); 2632 EmitStoreToStackLocalOrContextSlot(var, location);
2633 2633
2634 } else if (!var->is_const_mode() || op == Token::INIT_CONST) { 2634 } else if (!var->is_const_mode() || op == Token::INIT_CONST) {
2635 if (var->IsLookupSlot()) { 2635 if (var->IsLookupSlot()) {
2636 // Assignment to var. 2636 // Assignment to var.
2637 __ Push(rax); // Value. 2637 __ Push(rax); // Value.
2638 __ Push(rsi); // Context. 2638 __ Push(rsi); // Context.
2639 __ Push(var->name()); 2639 __ Push(var->name());
2640 __ Push(Smi::FromInt(strict_mode())); 2640 __ Push(Smi::FromInt(language_mode()));
2641 __ CallRuntime(Runtime::kStoreLookupSlot, 4); 2641 __ CallRuntime(Runtime::kStoreLookupSlot, 4);
2642 } else { 2642 } else {
2643 // Assignment to var or initializing assignment to let/const in harmony 2643 // Assignment to var or initializing assignment to let/const in harmony
2644 // mode. 2644 // mode.
2645 DCHECK(var->IsStackAllocated() || var->IsContextSlot()); 2645 DCHECK(var->IsStackAllocated() || var->IsContextSlot());
2646 MemOperand location = VarOperand(var, rcx); 2646 MemOperand location = VarOperand(var, rcx);
2647 if (generate_debug_code_ && op == Token::INIT_LET) { 2647 if (generate_debug_code_ && op == Token::INIT_LET) {
2648 // Check for an uninitialized let binding. 2648 // Check for an uninitialized let binding.
2649 __ movp(rdx, location); 2649 __ movp(rdx, location);
2650 __ CompareRoot(rdx, Heap::kTheHoleValueRootIndex); 2650 __ CompareRoot(rdx, Heap::kTheHoleValueRootIndex);
2651 __ Check(equal, kLetBindingReInitialization); 2651 __ Check(equal, kLetBindingReInitialization);
2652 } 2652 }
2653 EmitStoreToStackLocalOrContextSlot(var, location); 2653 EmitStoreToStackLocalOrContextSlot(var, location);
2654 } 2654 }
2655 } else if (IsSignallingAssignmentToConst(var, op, strict_mode())) { 2655 } else if (IsSignallingAssignmentToConst(var, op, language_mode())) {
2656 __ CallRuntime(Runtime::kThrowConstAssignError, 0); 2656 __ CallRuntime(Runtime::kThrowConstAssignError, 0);
2657 } 2657 }
2658 } 2658 }
2659 2659
2660 2660
2661 void FullCodeGenerator::EmitNamedPropertyAssignment(Assignment* expr) { 2661 void FullCodeGenerator::EmitNamedPropertyAssignment(Assignment* expr) {
2662 // Assignment to a property, using a named store IC. 2662 // Assignment to a property, using a named store IC.
2663 Property* prop = expr->target()->AsProperty(); 2663 Property* prop = expr->target()->AsProperty();
2664 DCHECK(prop != NULL); 2664 DCHECK(prop != NULL);
2665 DCHECK(prop->key()->IsLiteral()); 2665 DCHECK(prop->key()->IsLiteral());
(...skipping 12 matching lines...)
2678 void FullCodeGenerator::EmitNamedSuperPropertyStore(Property* prop) { 2678 void FullCodeGenerator::EmitNamedSuperPropertyStore(Property* prop) {
2679 // Assignment to named property of super. 2679 // Assignment to named property of super.
2680 // rax : value 2680 // rax : value
2681 // stack : receiver ('this'), home_object 2681 // stack : receiver ('this'), home_object
2682 DCHECK(prop != NULL); 2682 DCHECK(prop != NULL);
2683 Literal* key = prop->key()->AsLiteral(); 2683 Literal* key = prop->key()->AsLiteral();
2684 DCHECK(key != NULL); 2684 DCHECK(key != NULL);
2685 2685
2686 __ Push(key->value()); 2686 __ Push(key->value());
2687 __ Push(rax); 2687 __ Push(rax);
2688 __ CallRuntime((strict_mode() == STRICT ? Runtime::kStoreToSuper_Strict 2688 __ CallRuntime((is_strict(language_mode()) ? Runtime::kStoreToSuper_Strict
2689 : Runtime::kStoreToSuper_Sloppy), 2689 : Runtime::kStoreToSuper_Sloppy),
2690 4); 2690 4);
2691 } 2691 }
2692 2692
2693 2693
2694 void FullCodeGenerator::EmitKeyedSuperPropertyStore(Property* prop) { 2694 void FullCodeGenerator::EmitKeyedSuperPropertyStore(Property* prop) {
2695 // Assignment to named property of super. 2695 // Assignment to named property of super.
2696 // rax : value 2696 // rax : value
2697 // stack : receiver ('this'), home_object, key 2697 // stack : receiver ('this'), home_object, key
2698 DCHECK(prop != NULL); 2698 DCHECK(prop != NULL);
2699 2699
2700 __ Push(rax); 2700 __ Push(rax);
2701 __ CallRuntime((strict_mode() == STRICT ? Runtime::kStoreKeyedToSuper_Strict 2701 __ CallRuntime(
2702 : Runtime::kStoreKeyedToSuper_Sloppy), 2702 (is_strict(language_mode()) ? Runtime::kStoreKeyedToSuper_Strict
2703 4); 2703 : Runtime::kStoreKeyedToSuper_Sloppy),
2704 4);
2704 } 2705 }
2705 2706
2706 2707
2707 void FullCodeGenerator::EmitKeyedPropertyAssignment(Assignment* expr) { 2708 void FullCodeGenerator::EmitKeyedPropertyAssignment(Assignment* expr) {
2708 // Assignment to a property, using a keyed store IC. 2709 // Assignment to a property, using a keyed store IC.
2709 2710
2710 __ Pop(StoreDescriptor::NameRegister()); // Key. 2711 __ Pop(StoreDescriptor::NameRegister()); // Key.
2711 __ Pop(StoreDescriptor::ReceiverRegister()); 2712 __ Pop(StoreDescriptor::ReceiverRegister());
2712 DCHECK(StoreDescriptor::ValueRegister().is(rax)); 2713 DCHECK(StoreDescriptor::ValueRegister().is(rax));
2713 // Record source code position before IC call. 2714 // Record source code position before IC call.
2714 SetSourcePosition(expr->position()); 2715 SetSourcePosition(expr->position());
2715 Handle<Code> ic = CodeFactory::KeyedStoreIC(isolate(), strict_mode()).code(); 2716 Handle<Code> ic =
2717 CodeFactory::KeyedStoreIC(isolate(), language_mode()).code();
2716 CallIC(ic, expr->AssignmentFeedbackId()); 2718 CallIC(ic, expr->AssignmentFeedbackId());
2717 2719
2718 PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); 2720 PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
2719 context()->Plug(rax); 2721 context()->Plug(rax);
2720 } 2722 }
2721 2723
2722 2724
2723 void FullCodeGenerator::VisitProperty(Property* expr) { 2725 void FullCodeGenerator::VisitProperty(Property* expr) {
2724 Comment cmnt(masm_, "[ Property"); 2726 Comment cmnt(masm_, "[ Property");
2725 Expression* key = expr->key(); 2727 Expression* key = expr->key();
(...skipping 200 matching lines...)
2926 } 2928 }
2927 2929
2928 // Push the enclosing function. 2930 // Push the enclosing function.
2929 __ Push(Operand(rbp, JavaScriptFrameConstants::kFunctionOffset)); 2931 __ Push(Operand(rbp, JavaScriptFrameConstants::kFunctionOffset));
2930 2932
2931 // Push the receiver of the enclosing function and do runtime call. 2933 // Push the receiver of the enclosing function and do runtime call.
2932 StackArgumentsAccessor args(rbp, info_->scope()->num_parameters()); 2934 StackArgumentsAccessor args(rbp, info_->scope()->num_parameters());
2933 __ Push(args.GetReceiverOperand()); 2935 __ Push(args.GetReceiverOperand());
2934 2936
2935 // Push the language mode. 2937 // Push the language mode.
2936 __ Push(Smi::FromInt(strict_mode())); 2938 __ Push(Smi::FromInt(language_mode()));
2937 2939
2938 // Push the start position of the scope the calls resides in. 2940 // Push the start position of the scope the calls resides in.
2939 __ Push(Smi::FromInt(scope()->start_position())); 2941 __ Push(Smi::FromInt(scope()->start_position()));
2940 2942
2941 // Do the runtime call. 2943 // Do the runtime call.
2942 __ CallRuntime(Runtime::kResolvePossiblyDirectEval, 6); 2944 __ CallRuntime(Runtime::kResolvePossiblyDirectEval, 6);
2943 } 2945 }
2944 2946
2945 2947
2946 void FullCodeGenerator::EmitLoadSuperConstructor(SuperReference* super_ref) { 2948 void FullCodeGenerator::EmitLoadSuperConstructor(SuperReference* super_ref) {
(...skipping 1560 matching lines...)
4507 void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) { 4509 void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
4508 switch (expr->op()) { 4510 switch (expr->op()) {
4509 case Token::DELETE: { 4511 case Token::DELETE: {
4510 Comment cmnt(masm_, "[ UnaryOperation (DELETE)"); 4512 Comment cmnt(masm_, "[ UnaryOperation (DELETE)");
4511 Property* property = expr->expression()->AsProperty(); 4513 Property* property = expr->expression()->AsProperty();
4512 VariableProxy* proxy = expr->expression()->AsVariableProxy(); 4514 VariableProxy* proxy = expr->expression()->AsVariableProxy();
4513 4515
4514 if (property != NULL) { 4516 if (property != NULL) {
4515 VisitForStackValue(property->obj()); 4517 VisitForStackValue(property->obj());
4516 VisitForStackValue(property->key()); 4518 VisitForStackValue(property->key());
4517 __ Push(Smi::FromInt(strict_mode())); 4519 __ Push(Smi::FromInt(language_mode()));
4518 __ InvokeBuiltin(Builtins::DELETE, CALL_FUNCTION); 4520 __ InvokeBuiltin(Builtins::DELETE, CALL_FUNCTION);
4519 context()->Plug(rax); 4521 context()->Plug(rax);
4520 } else if (proxy != NULL) { 4522 } else if (proxy != NULL) {
4521 Variable* var = proxy->var(); 4523 Variable* var = proxy->var();
4522 // Delete of an unqualified identifier is disallowed in strict mode 4524 // Delete of an unqualified identifier is disallowed in strict mode
4523 // but "delete this" is allowed. 4525 // but "delete this" is allowed.
4524 DCHECK(strict_mode() == SLOPPY || var->is_this()); 4526 DCHECK(!is_strict(language_mode()) || var->is_this());
4525 if (var->IsUnallocated()) { 4527 if (var->IsUnallocated()) {
4526 __ Push(GlobalObjectOperand()); 4528 __ Push(GlobalObjectOperand());
4527 __ Push(var->name()); 4529 __ Push(var->name());
4528 __ Push(Smi::FromInt(SLOPPY)); 4530 __ Push(Smi::FromInt(SLOPPY));
4529 __ InvokeBuiltin(Builtins::DELETE, CALL_FUNCTION); 4531 __ InvokeBuiltin(Builtins::DELETE, CALL_FUNCTION);
4530 context()->Plug(rax); 4532 context()->Plug(rax);
4531 } else if (var->IsStackAllocated() || var->IsContextSlot()) { 4533 } else if (var->IsStackAllocated() || var->IsContextSlot()) {
4532 // Result of deleting non-global variables is false. 'this' is 4534 // Result of deleting non-global variables is false. 'this' is
4533 // not really a variable, though we implement it as one. The 4535 // not really a variable, though we implement it as one. The
4534 // subexpression does not have side effects. 4536 // subexpression does not have side effects.
(...skipping 303 matching lines...)
4838 } 4840 }
4839 } else { 4841 } else {
4840 context()->Plug(rax); 4842 context()->Plug(rax);
4841 } 4843 }
4842 break; 4844 break;
4843 } 4845 }
4844 case KEYED_PROPERTY: { 4846 case KEYED_PROPERTY: {
4845 __ Pop(StoreDescriptor::NameRegister()); 4847 __ Pop(StoreDescriptor::NameRegister());
4846 __ Pop(StoreDescriptor::ReceiverRegister()); 4848 __ Pop(StoreDescriptor::ReceiverRegister());
4847 Handle<Code> ic = 4849 Handle<Code> ic =
4848 CodeFactory::KeyedStoreIC(isolate(), strict_mode()).code(); 4850 CodeFactory::KeyedStoreIC(isolate(), language_mode()).code();
4849 CallIC(ic, expr->CountStoreFeedbackId()); 4851 CallIC(ic, expr->CountStoreFeedbackId());
4850 PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); 4852 PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
4851 if (expr->is_postfix()) { 4853 if (expr->is_postfix()) {
4852 if (!context()->IsEffect()) { 4854 if (!context()->IsEffect()) {
4853 context()->PlugTOS(); 4855 context()->PlugTOS();
4854 } 4856 }
4855 } else { 4857 } else {
4856 context()->Plug(rax); 4858 context()->Plug(rax);
4857 } 4859 }
4858 break; 4860 break;
(...skipping 438 matching lines...)
5297 DCHECK_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(), 5299 DCHECK_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(),
5298 Assembler::target_address_at(call_target_address, 5300 Assembler::target_address_at(call_target_address,
5299 unoptimized_code)); 5301 unoptimized_code));
5300 return OSR_AFTER_STACK_CHECK; 5302 return OSR_AFTER_STACK_CHECK;
5301 } 5303 }
5302 5304
5303 5305
5304 } } // namespace v8::internal 5306 } } // namespace v8::internal
5305 5307
5306 #endif // V8_TARGET_ARCH_X64 5308 #endif // V8_TARGET_ARCH_X64
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