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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 #if V8_TARGET_ARCH_X64 | 5 #if V8_TARGET_ARCH_X64 |
6 | 6 |
7 #include "src/full-codegen/full-codegen.h" | 7 #include "src/full-codegen/full-codegen.h" |
8 #include "src/ast/compile-time-value.h" | 8 #include "src/ast/compile-time-value.h" |
9 #include "src/ast/scopes.h" | 9 #include "src/ast/scopes.h" |
10 #include "src/code-factory.h" | 10 #include "src/code-factory.h" |
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1112 PrepareForBailoutForId(stmt->ExitId(), BailoutState::NO_REGISTERS); | 1112 PrepareForBailoutForId(stmt->ExitId(), BailoutState::NO_REGISTERS); |
1113 __ bind(&exit); | 1113 __ bind(&exit); |
1114 decrement_loop_depth(); | 1114 decrement_loop_depth(); |
1115 } | 1115 } |
1116 | 1116 |
1117 | 1117 |
1118 void FullCodeGenerator::EmitSetHomeObject(Expression* initializer, int offset, | 1118 void FullCodeGenerator::EmitSetHomeObject(Expression* initializer, int offset, |
1119 FeedbackVectorSlot slot) { | 1119 FeedbackVectorSlot slot) { |
1120 DCHECK(NeedsHomeObject(initializer)); | 1120 DCHECK(NeedsHomeObject(initializer)); |
1121 __ movp(StoreDescriptor::ReceiverRegister(), Operand(rsp, 0)); | 1121 __ movp(StoreDescriptor::ReceiverRegister(), Operand(rsp, 0)); |
1122 __ Move(StoreDescriptor::NameRegister(), | |
1123 isolate()->factory()->home_object_symbol()); | |
1124 __ movp(StoreDescriptor::ValueRegister(), | 1122 __ movp(StoreDescriptor::ValueRegister(), |
1125 Operand(rsp, offset * kPointerSize)); | 1123 Operand(rsp, offset * kPointerSize)); |
1126 EmitLoadStoreICSlot(slot); | 1124 CallStoreIC(slot, isolate()->factory()->home_object_symbol()); |
1127 CallStoreIC(); | |
1128 } | 1125 } |
1129 | 1126 |
1130 | 1127 |
1131 void FullCodeGenerator::EmitSetHomeObjectAccumulator(Expression* initializer, | 1128 void FullCodeGenerator::EmitSetHomeObjectAccumulator(Expression* initializer, |
1132 int offset, | 1129 int offset, |
1133 FeedbackVectorSlot slot) { | 1130 FeedbackVectorSlot slot) { |
1134 DCHECK(NeedsHomeObject(initializer)); | 1131 DCHECK(NeedsHomeObject(initializer)); |
1135 __ movp(StoreDescriptor::ReceiverRegister(), rax); | 1132 __ movp(StoreDescriptor::ReceiverRegister(), rax); |
1136 __ Move(StoreDescriptor::NameRegister(), | |
1137 isolate()->factory()->home_object_symbol()); | |
1138 __ movp(StoreDescriptor::ValueRegister(), | 1133 __ movp(StoreDescriptor::ValueRegister(), |
1139 Operand(rsp, offset * kPointerSize)); | 1134 Operand(rsp, offset * kPointerSize)); |
1140 EmitLoadStoreICSlot(slot); | 1135 CallStoreIC(slot, isolate()->factory()->home_object_symbol()); |
1141 CallStoreIC(); | |
1142 } | 1136 } |
1143 | 1137 |
1144 | 1138 |
1145 void FullCodeGenerator::EmitLoadGlobalCheckExtensions(VariableProxy* proxy, | 1139 void FullCodeGenerator::EmitLoadGlobalCheckExtensions(VariableProxy* proxy, |
1146 TypeofMode typeof_mode, | 1140 TypeofMode typeof_mode, |
1147 Label* slow) { | 1141 Label* slow) { |
1148 Register context = rsi; | 1142 Register context = rsi; |
1149 Register temp = rdx; | 1143 Register temp = rdx; |
1150 | 1144 |
1151 int to_check = scope()->ContextChainLengthUntilOutermostSloppyEval(); | 1145 int to_check = scope()->ContextChainLengthUntilOutermostSloppyEval(); |
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1366 DCHECK(!CompileTimeValue::IsCompileTimeValue(value)); | 1360 DCHECK(!CompileTimeValue::IsCompileTimeValue(value)); |
1367 // Fall through. | 1361 // Fall through. |
1368 case ObjectLiteral::Property::COMPUTED: | 1362 case ObjectLiteral::Property::COMPUTED: |
1369 // It is safe to use [[Put]] here because the boilerplate already | 1363 // It is safe to use [[Put]] here because the boilerplate already |
1370 // contains computed properties with an uninitialized value. | 1364 // contains computed properties with an uninitialized value. |
1371 if (key->IsStringLiteral()) { | 1365 if (key->IsStringLiteral()) { |
1372 DCHECK(key->IsPropertyName()); | 1366 DCHECK(key->IsPropertyName()); |
1373 if (property->emit_store()) { | 1367 if (property->emit_store()) { |
1374 VisitForAccumulatorValue(value); | 1368 VisitForAccumulatorValue(value); |
1375 DCHECK(StoreDescriptor::ValueRegister().is(rax)); | 1369 DCHECK(StoreDescriptor::ValueRegister().is(rax)); |
1376 __ Move(StoreDescriptor::NameRegister(), key->value()); | |
1377 __ movp(StoreDescriptor::ReceiverRegister(), Operand(rsp, 0)); | 1370 __ movp(StoreDescriptor::ReceiverRegister(), Operand(rsp, 0)); |
1378 EmitLoadStoreICSlot(property->GetSlot(0)); | 1371 CallStoreIC(property->GetSlot(0), key->value()); |
1379 CallStoreIC(); | |
1380 PrepareForBailoutForId(key->id(), BailoutState::NO_REGISTERS); | 1372 PrepareForBailoutForId(key->id(), BailoutState::NO_REGISTERS); |
1381 | 1373 |
1382 if (NeedsHomeObject(value)) { | 1374 if (NeedsHomeObject(value)) { |
1383 EmitSetHomeObjectAccumulator(value, 0, property->GetSlot(1)); | 1375 EmitSetHomeObjectAccumulator(value, 0, property->GetSlot(1)); |
1384 } | 1376 } |
1385 } else { | 1377 } else { |
1386 VisitForEffect(value); | 1378 VisitForEffect(value); |
1387 } | 1379 } |
1388 break; | 1380 break; |
1389 } | 1381 } |
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1558 if (CompileTimeValue::IsCompileTimeValue(subexpr)) continue; | 1550 if (CompileTimeValue::IsCompileTimeValue(subexpr)) continue; |
1559 | 1551 |
1560 if (!result_saved) { | 1552 if (!result_saved) { |
1561 PushOperand(rax); // array literal | 1553 PushOperand(rax); // array literal |
1562 result_saved = true; | 1554 result_saved = true; |
1563 } | 1555 } |
1564 VisitForAccumulatorValue(subexpr); | 1556 VisitForAccumulatorValue(subexpr); |
1565 | 1557 |
1566 __ Move(StoreDescriptor::NameRegister(), Smi::FromInt(array_index)); | 1558 __ Move(StoreDescriptor::NameRegister(), Smi::FromInt(array_index)); |
1567 __ movp(StoreDescriptor::ReceiverRegister(), Operand(rsp, 0)); | 1559 __ movp(StoreDescriptor::ReceiverRegister(), Operand(rsp, 0)); |
1568 EmitLoadStoreICSlot(expr->LiteralFeedbackSlot()); | 1560 CallKeyedStoreIC(expr->LiteralFeedbackSlot()); |
1569 CallKeyedStoreIC(); | |
1570 | 1561 |
1571 PrepareForBailoutForId(expr->GetIdForElement(array_index), | 1562 PrepareForBailoutForId(expr->GetIdForElement(array_index), |
1572 BailoutState::NO_REGISTERS); | 1563 BailoutState::NO_REGISTERS); |
1573 } | 1564 } |
1574 | 1565 |
1575 if (result_saved) { | 1566 if (result_saved) { |
1576 context()->PlugTOS(); | 1567 context()->PlugTOS(); |
1577 } else { | 1568 } else { |
1578 context()->Plug(rax); | 1569 context()->Plug(rax); |
1579 } | 1570 } |
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1947 Variable* var = expr->AsVariableProxy()->var(); | 1938 Variable* var = expr->AsVariableProxy()->var(); |
1948 EffectContext context(this); | 1939 EffectContext context(this); |
1949 EmitVariableAssignment(var, Token::ASSIGN, slot); | 1940 EmitVariableAssignment(var, Token::ASSIGN, slot); |
1950 break; | 1941 break; |
1951 } | 1942 } |
1952 case NAMED_PROPERTY: { | 1943 case NAMED_PROPERTY: { |
1953 PushOperand(rax); // Preserve value. | 1944 PushOperand(rax); // Preserve value. |
1954 VisitForAccumulatorValue(prop->obj()); | 1945 VisitForAccumulatorValue(prop->obj()); |
1955 __ Move(StoreDescriptor::ReceiverRegister(), rax); | 1946 __ Move(StoreDescriptor::ReceiverRegister(), rax); |
1956 PopOperand(StoreDescriptor::ValueRegister()); // Restore value. | 1947 PopOperand(StoreDescriptor::ValueRegister()); // Restore value. |
1957 __ Move(StoreDescriptor::NameRegister(), | 1948 CallStoreIC(slot, prop->key()->AsLiteral()->value()); |
1958 prop->key()->AsLiteral()->value()); | |
1959 EmitLoadStoreICSlot(slot); | |
1960 CallStoreIC(); | |
1961 break; | 1949 break; |
1962 } | 1950 } |
1963 case NAMED_SUPER_PROPERTY: { | 1951 case NAMED_SUPER_PROPERTY: { |
1964 PushOperand(rax); | 1952 PushOperand(rax); |
1965 VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); | 1953 VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); |
1966 VisitForAccumulatorValue( | 1954 VisitForAccumulatorValue( |
1967 prop->obj()->AsSuperPropertyReference()->home_object()); | 1955 prop->obj()->AsSuperPropertyReference()->home_object()); |
1968 // stack: value, this; rax: home_object | 1956 // stack: value, this; rax: home_object |
1969 Register scratch = rcx; | 1957 Register scratch = rcx; |
1970 Register scratch2 = rdx; | 1958 Register scratch2 = rdx; |
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1997 EmitKeyedSuperPropertyStore(prop); | 1985 EmitKeyedSuperPropertyStore(prop); |
1998 break; | 1986 break; |
1999 } | 1987 } |
2000 case KEYED_PROPERTY: { | 1988 case KEYED_PROPERTY: { |
2001 PushOperand(rax); // Preserve value. | 1989 PushOperand(rax); // Preserve value. |
2002 VisitForStackValue(prop->obj()); | 1990 VisitForStackValue(prop->obj()); |
2003 VisitForAccumulatorValue(prop->key()); | 1991 VisitForAccumulatorValue(prop->key()); |
2004 __ Move(StoreDescriptor::NameRegister(), rax); | 1992 __ Move(StoreDescriptor::NameRegister(), rax); |
2005 PopOperand(StoreDescriptor::ReceiverRegister()); | 1993 PopOperand(StoreDescriptor::ReceiverRegister()); |
2006 PopOperand(StoreDescriptor::ValueRegister()); // Restore value. | 1994 PopOperand(StoreDescriptor::ValueRegister()); // Restore value. |
2007 EmitLoadStoreICSlot(slot); | 1995 CallKeyedStoreIC(slot); |
2008 CallKeyedStoreIC(); | |
2009 break; | 1996 break; |
2010 } | 1997 } |
2011 } | 1998 } |
2012 context()->Plug(rax); | 1999 context()->Plug(rax); |
2013 } | 2000 } |
2014 | 2001 |
2015 | 2002 |
2016 void FullCodeGenerator::EmitStoreToStackLocalOrContextSlot( | 2003 void FullCodeGenerator::EmitStoreToStackLocalOrContextSlot( |
2017 Variable* var, MemOperand location) { | 2004 Variable* var, MemOperand location) { |
2018 __ movp(location, rax); | 2005 __ movp(location, rax); |
2019 if (var->IsContextSlot()) { | 2006 if (var->IsContextSlot()) { |
2020 __ movp(rdx, rax); | 2007 __ movp(rdx, rax); |
2021 __ RecordWriteContextSlot( | 2008 __ RecordWriteContextSlot( |
2022 rcx, Context::SlotOffset(var->index()), rdx, rbx, kDontSaveFPRegs); | 2009 rcx, Context::SlotOffset(var->index()), rdx, rbx, kDontSaveFPRegs); |
2023 } | 2010 } |
2024 } | 2011 } |
2025 | 2012 |
2026 | 2013 |
2027 void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op, | 2014 void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op, |
2028 FeedbackVectorSlot slot) { | 2015 FeedbackVectorSlot slot) { |
2029 if (var->IsUnallocated()) { | 2016 if (var->IsUnallocated()) { |
2030 // Global var, const, or let. | 2017 // Global var, const, or let. |
2031 __ Move(StoreDescriptor::NameRegister(), var->name()); | |
2032 __ LoadGlobalObject(StoreDescriptor::ReceiverRegister()); | 2018 __ LoadGlobalObject(StoreDescriptor::ReceiverRegister()); |
2033 EmitLoadStoreICSlot(slot); | 2019 CallStoreIC(slot, var->name()); |
2034 CallStoreIC(); | |
2035 | 2020 |
2036 } else if (IsLexicalVariableMode(var->mode()) && op != Token::INIT) { | 2021 } else if (IsLexicalVariableMode(var->mode()) && op != Token::INIT) { |
2037 DCHECK(!var->IsLookupSlot()); | 2022 DCHECK(!var->IsLookupSlot()); |
2038 DCHECK(var->IsStackAllocated() || var->IsContextSlot()); | 2023 DCHECK(var->IsStackAllocated() || var->IsContextSlot()); |
2039 MemOperand location = VarOperand(var, rcx); | 2024 MemOperand location = VarOperand(var, rcx); |
2040 // Perform an initialization check for lexically declared variables. | 2025 // Perform an initialization check for lexically declared variables. |
2041 if (var->binding_needs_init()) { | 2026 if (var->binding_needs_init()) { |
2042 Label assign; | 2027 Label assign; |
2043 __ movp(rdx, location); | 2028 __ movp(rdx, location); |
2044 __ CompareRoot(rdx, Heap::kTheHoleValueRootIndex); | 2029 __ CompareRoot(rdx, Heap::kTheHoleValueRootIndex); |
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2091 } | 2076 } |
2092 } | 2077 } |
2093 | 2078 |
2094 | 2079 |
2095 void FullCodeGenerator::EmitNamedPropertyAssignment(Assignment* expr) { | 2080 void FullCodeGenerator::EmitNamedPropertyAssignment(Assignment* expr) { |
2096 // Assignment to a property, using a named store IC. | 2081 // Assignment to a property, using a named store IC. |
2097 Property* prop = expr->target()->AsProperty(); | 2082 Property* prop = expr->target()->AsProperty(); |
2098 DCHECK(prop != NULL); | 2083 DCHECK(prop != NULL); |
2099 DCHECK(prop->key()->IsLiteral()); | 2084 DCHECK(prop->key()->IsLiteral()); |
2100 | 2085 |
2101 __ Move(StoreDescriptor::NameRegister(), prop->key()->AsLiteral()->value()); | |
2102 PopOperand(StoreDescriptor::ReceiverRegister()); | 2086 PopOperand(StoreDescriptor::ReceiverRegister()); |
2103 EmitLoadStoreICSlot(expr->AssignmentSlot()); | 2087 CallStoreIC(expr->AssignmentSlot(), prop->key()->AsLiteral()->value()); |
2104 CallStoreIC(); | |
2105 | 2088 |
2106 PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); | 2089 PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); |
2107 context()->Plug(rax); | 2090 context()->Plug(rax); |
2108 } | 2091 } |
2109 | 2092 |
2110 | 2093 |
2111 void FullCodeGenerator::EmitNamedSuperPropertyStore(Property* prop) { | 2094 void FullCodeGenerator::EmitNamedSuperPropertyStore(Property* prop) { |
2112 // Assignment to named property of super. | 2095 // Assignment to named property of super. |
2113 // rax : value | 2096 // rax : value |
2114 // stack : receiver ('this'), home_object | 2097 // stack : receiver ('this'), home_object |
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2135 ? Runtime::kStoreKeyedToSuper_Strict | 2118 ? Runtime::kStoreKeyedToSuper_Strict |
2136 : Runtime::kStoreKeyedToSuper_Sloppy); | 2119 : Runtime::kStoreKeyedToSuper_Sloppy); |
2137 } | 2120 } |
2138 | 2121 |
2139 | 2122 |
2140 void FullCodeGenerator::EmitKeyedPropertyAssignment(Assignment* expr) { | 2123 void FullCodeGenerator::EmitKeyedPropertyAssignment(Assignment* expr) { |
2141 // Assignment to a property, using a keyed store IC. | 2124 // Assignment to a property, using a keyed store IC. |
2142 PopOperand(StoreDescriptor::NameRegister()); // Key. | 2125 PopOperand(StoreDescriptor::NameRegister()); // Key. |
2143 PopOperand(StoreDescriptor::ReceiverRegister()); | 2126 PopOperand(StoreDescriptor::ReceiverRegister()); |
2144 DCHECK(StoreDescriptor::ValueRegister().is(rax)); | 2127 DCHECK(StoreDescriptor::ValueRegister().is(rax)); |
2145 EmitLoadStoreICSlot(expr->AssignmentSlot()); | 2128 CallKeyedStoreIC(expr->AssignmentSlot()); |
2146 CallKeyedStoreIC(); | |
2147 | 2129 |
2148 PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); | 2130 PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); |
2149 context()->Plug(rax); | 2131 context()->Plug(rax); |
2150 } | 2132 } |
2151 | 2133 |
2152 | 2134 |
2153 void FullCodeGenerator::CallIC(Handle<Code> code, | 2135 void FullCodeGenerator::CallIC(Handle<Code> code, |
2154 TypeFeedbackId ast_id) { | 2136 TypeFeedbackId ast_id) { |
2155 ic_total_count_++; | 2137 ic_total_count_++; |
2156 __ call(code, RelocInfo::CODE_TARGET, ast_id); | 2138 __ call(code, RelocInfo::CODE_TARGET, ast_id); |
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3184 } else { | 3166 } else { |
3185 // Perform the assignment as if via '='. | 3167 // Perform the assignment as if via '='. |
3186 EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(), | 3168 EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(), |
3187 Token::ASSIGN, expr->CountSlot()); | 3169 Token::ASSIGN, expr->CountSlot()); |
3188 PrepareForBailoutForId(expr->AssignmentId(), | 3170 PrepareForBailoutForId(expr->AssignmentId(), |
3189 BailoutState::TOS_REGISTER); | 3171 BailoutState::TOS_REGISTER); |
3190 context()->Plug(rax); | 3172 context()->Plug(rax); |
3191 } | 3173 } |
3192 break; | 3174 break; |
3193 case NAMED_PROPERTY: { | 3175 case NAMED_PROPERTY: { |
3194 __ Move(StoreDescriptor::NameRegister(), | |
3195 prop->key()->AsLiteral()->value()); | |
3196 PopOperand(StoreDescriptor::ReceiverRegister()); | 3176 PopOperand(StoreDescriptor::ReceiverRegister()); |
3197 EmitLoadStoreICSlot(expr->CountSlot()); | 3177 CallStoreIC(expr->CountSlot(), prop->key()->AsLiteral()->value()); |
3198 CallStoreIC(); | |
3199 PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); | 3178 PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); |
3200 if (expr->is_postfix()) { | 3179 if (expr->is_postfix()) { |
3201 if (!context()->IsEffect()) { | 3180 if (!context()->IsEffect()) { |
3202 context()->PlugTOS(); | 3181 context()->PlugTOS(); |
3203 } | 3182 } |
3204 } else { | 3183 } else { |
3205 context()->Plug(rax); | 3184 context()->Plug(rax); |
3206 } | 3185 } |
3207 break; | 3186 break; |
3208 } | 3187 } |
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3226 context()->PlugTOS(); | 3205 context()->PlugTOS(); |
3227 } | 3206 } |
3228 } else { | 3207 } else { |
3229 context()->Plug(rax); | 3208 context()->Plug(rax); |
3230 } | 3209 } |
3231 break; | 3210 break; |
3232 } | 3211 } |
3233 case KEYED_PROPERTY: { | 3212 case KEYED_PROPERTY: { |
3234 PopOperand(StoreDescriptor::NameRegister()); | 3213 PopOperand(StoreDescriptor::NameRegister()); |
3235 PopOperand(StoreDescriptor::ReceiverRegister()); | 3214 PopOperand(StoreDescriptor::ReceiverRegister()); |
3236 EmitLoadStoreICSlot(expr->CountSlot()); | 3215 CallKeyedStoreIC(expr->CountSlot()); |
3237 CallKeyedStoreIC(); | |
3238 PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); | 3216 PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); |
3239 if (expr->is_postfix()) { | 3217 if (expr->is_postfix()) { |
3240 if (!context()->IsEffect()) { | 3218 if (!context()->IsEffect()) { |
3241 context()->PlugTOS(); | 3219 context()->PlugTOS(); |
3242 } | 3220 } |
3243 } else { | 3221 } else { |
3244 context()->Plug(rax); | 3222 context()->Plug(rax); |
3245 } | 3223 } |
3246 break; | 3224 break; |
3247 } | 3225 } |
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3609 DCHECK_EQ( | 3587 DCHECK_EQ( |
3610 isolate->builtins()->OnStackReplacement()->entry(), | 3588 isolate->builtins()->OnStackReplacement()->entry(), |
3611 Assembler::target_address_at(call_target_address, unoptimized_code)); | 3589 Assembler::target_address_at(call_target_address, unoptimized_code)); |
3612 return ON_STACK_REPLACEMENT; | 3590 return ON_STACK_REPLACEMENT; |
3613 } | 3591 } |
3614 | 3592 |
3615 } // namespace internal | 3593 } // namespace internal |
3616 } // namespace v8 | 3594 } // namespace v8 |
3617 | 3595 |
3618 #endif // V8_TARGET_ARCH_X64 | 3596 #endif // V8_TARGET_ARCH_X64 |
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