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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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/crankshaft/hydrogen.h" | 5 #include "src/crankshaft/hydrogen.h" |
6 | 6 |
7 #include <memory> | 7 #include <memory> |
8 #include <sstream> | 8 #include <sstream> |
9 | 9 |
10 #include "src/allocation-site-scopes.h" | 10 #include "src/allocation-site-scopes.h" |
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10593 2); | 10593 2); |
10594 return ast_context()->ReturnInstruction(instr, expr->id()); | 10594 return ast_context()->ReturnInstruction(instr, expr->id()); |
10595 } else if (proxy != NULL) { | 10595 } else if (proxy != NULL) { |
10596 Variable* var = proxy->var(); | 10596 Variable* var = proxy->var(); |
10597 if (var->IsUnallocatedOrGlobalSlot()) { | 10597 if (var->IsUnallocatedOrGlobalSlot()) { |
10598 Bailout(kDeleteWithGlobalVariable); | 10598 Bailout(kDeleteWithGlobalVariable); |
10599 } else if (var->IsStackAllocated() || var->IsContextSlot()) { | 10599 } else if (var->IsStackAllocated() || var->IsContextSlot()) { |
10600 // Result of deleting non-global variables is false. 'this' is not really | 10600 // Result of deleting non-global variables is false. 'this' is not really |
10601 // a variable, though we implement it as one. The subexpression does not | 10601 // a variable, though we implement it as one. The subexpression does not |
10602 // have side effects. | 10602 // have side effects. |
10603 HValue* value = var->HasThisName(isolate()) ? graph()->GetConstantTrue() | 10603 HValue* value = var->is_this() ? graph()->GetConstantTrue() |
10604 : graph()->GetConstantFalse(); | 10604 : graph()->GetConstantFalse(); |
10605 return ast_context()->ReturnValue(value); | 10605 return ast_context()->ReturnValue(value); |
10606 } else { | 10606 } else { |
10607 Bailout(kDeleteWithNonGlobalVariable); | 10607 Bailout(kDeleteWithNonGlobalVariable); |
10608 } | 10608 } |
10609 } else { | 10609 } else { |
10610 // Result of deleting non-property, non-variable reference is true. | 10610 // Result of deleting non-property, non-variable reference is true. |
10611 // Evaluate the subexpression for side effects. | 10611 // Evaluate the subexpression for side effects. |
10612 CHECK_ALIVE(VisitForEffect(expr->expression())); | 10612 CHECK_ALIVE(VisitForEffect(expr->expression())); |
10613 return ast_context()->ReturnValue(graph()->GetConstantTrue()); | 10613 return ast_context()->ReturnValue(graph()->GetConstantTrue()); |
10614 } | 10614 } |
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13433 isolate()->GetHTracer()->TraceHydrogen(name(), graph_); | 13433 isolate()->GetHTracer()->TraceHydrogen(name(), graph_); |
13434 } | 13434 } |
13435 | 13435 |
13436 #ifdef DEBUG | 13436 #ifdef DEBUG |
13437 graph_->Verify(false); // No full verify. | 13437 graph_->Verify(false); // No full verify. |
13438 #endif | 13438 #endif |
13439 } | 13439 } |
13440 | 13440 |
13441 } // namespace internal | 13441 } // namespace internal |
13442 } // namespace v8 | 13442 } // namespace v8 |
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