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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 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/compiler/ast-graph-builder.h" | 5 #include "src/compiler/ast-graph-builder.h" |
6 | 6 |
7 #include "src/ast/scopes.h" | 7 #include "src/ast/scopes.h" |
8 #include "src/compiler.h" | 8 #include "src/compiler.h" |
9 #include "src/compiler/ast-loop-assignment-analyzer.h" | 9 #include "src/compiler/ast-loop-assignment-analyzer.h" |
10 #include "src/compiler/control-builders.h" | 10 #include "src/compiler/control-builders.h" |
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569 return !HasStackOverflow(); | 569 return !HasStackOverflow(); |
570 } | 570 } |
571 | 571 |
572 | 572 |
573 void AstGraphBuilder::CreateGraphBody(bool stack_check) { | 573 void AstGraphBuilder::CreateGraphBody(bool stack_check) { |
574 Scope* scope = info()->scope(); | 574 Scope* scope = info()->scope(); |
575 | 575 |
576 // Build the arguments object if it is used. | 576 // Build the arguments object if it is used. |
577 BuildArgumentsObject(scope->arguments()); | 577 BuildArgumentsObject(scope->arguments()); |
578 | 578 |
| 579 // Build rest arguments array if it is used. |
| 580 int rest_index; |
| 581 Variable* rest_parameter = scope->rest_parameter(&rest_index); |
| 582 BuildRestArgumentsArray(rest_parameter, rest_index); |
| 583 |
579 // Build assignment to {.this_function} variable if it is used. | 584 // Build assignment to {.this_function} variable if it is used. |
580 BuildThisFunctionVariable(scope->this_function_var()); | 585 BuildThisFunctionVariable(scope->this_function_var()); |
581 | 586 |
582 // Build assignment to {new.target} variable if it is used. | 587 // Build assignment to {new.target} variable if it is used. |
583 BuildNewTargetVariable(scope->new_target_var()); | 588 BuildNewTargetVariable(scope->new_target_var()); |
584 | 589 |
585 // Emit tracing call if requested to do so. | 590 // Emit tracing call if requested to do so. |
586 if (FLAG_trace) { | 591 if (FLAG_trace) { |
587 NewNode(javascript()->CallRuntime(Runtime::kTraceEnter, 0)); | 592 NewNode(javascript()->CallRuntime(Runtime::kTraceEnter, 0)); |
588 } | 593 } |
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3214 // Assign the object to the {arguments} variable. This should never lazy | 3219 // Assign the object to the {arguments} variable. This should never lazy |
3215 // deopt, so it is fine to send invalid bailout id. | 3220 // deopt, so it is fine to send invalid bailout id. |
3216 DCHECK(arguments->IsContextSlot() || arguments->IsStackAllocated()); | 3221 DCHECK(arguments->IsContextSlot() || arguments->IsStackAllocated()); |
3217 FrameStateBeforeAndAfter states(this, BailoutId::None()); | 3222 FrameStateBeforeAndAfter states(this, BailoutId::None()); |
3218 BuildVariableAssignment(arguments, object, Token::ASSIGN, VectorSlotPair(), | 3223 BuildVariableAssignment(arguments, object, Token::ASSIGN, VectorSlotPair(), |
3219 BailoutId::None(), states); | 3224 BailoutId::None(), states); |
3220 return object; | 3225 return object; |
3221 } | 3226 } |
3222 | 3227 |
3223 | 3228 |
| 3229 Node* AstGraphBuilder::BuildRestArgumentsArray(Variable* rest, int index) { |
| 3230 if (rest == NULL) return NULL; |
| 3231 |
| 3232 // TODO(mvstanton): Handle rest arguments. |
| 3233 SetStackOverflow(); |
| 3234 return jsgraph()->UndefinedConstant(); |
| 3235 } |
| 3236 |
| 3237 |
3224 Node* AstGraphBuilder::BuildThisFunctionVariable(Variable* this_function_var) { | 3238 Node* AstGraphBuilder::BuildThisFunctionVariable(Variable* this_function_var) { |
3225 if (this_function_var == nullptr) return nullptr; | 3239 if (this_function_var == nullptr) return nullptr; |
3226 | 3240 |
3227 // Retrieve the closure we were called with. | 3241 // Retrieve the closure we were called with. |
3228 Node* this_function = GetFunctionClosure(); | 3242 Node* this_function = GetFunctionClosure(); |
3229 | 3243 |
3230 // Assign the object to the {.this_function} variable. This should never lazy | 3244 // Assign the object to the {.this_function} variable. This should never lazy |
3231 // deopt, so it is fine to send invalid bailout id. | 3245 // deopt, so it is fine to send invalid bailout id. |
3232 FrameStateBeforeAndAfter states(this, BailoutId::None()); | 3246 FrameStateBeforeAndAfter states(this, BailoutId::None()); |
3233 BuildVariableAssignment(this_function_var, this_function, Token::INIT, | 3247 BuildVariableAssignment(this_function_var, this_function, Token::INIT, |
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4332 // Phi does not exist yet, introduce one. | 4346 // Phi does not exist yet, introduce one. |
4333 value = NewPhi(inputs, value, control); | 4347 value = NewPhi(inputs, value, control); |
4334 value->ReplaceInput(inputs - 1, other); | 4348 value->ReplaceInput(inputs - 1, other); |
4335 } | 4349 } |
4336 return value; | 4350 return value; |
4337 } | 4351 } |
4338 | 4352 |
4339 } // namespace compiler | 4353 } // namespace compiler |
4340 } // namespace internal | 4354 } // namespace internal |
4341 } // namespace v8 | 4355 } // namespace v8 |
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