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Issue 961723002: Also skip when the target is the global object (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 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/v8.h" 5 #include "src/v8.h"
6 6
7 #if V8_TARGET_ARCH_ARM64 7 #if V8_TARGET_ARCH_ARM64
8 8
9 #include "src/ic/call-optimization.h" 9 #include "src/ic/call-optimization.h"
10 #include "src/ic/handler-compiler.h" 10 #include "src/ic/handler-compiler.h"
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541 541
542 // Go to the next object in the prototype chain. 542 // Go to the next object in the prototype chain.
543 current = prototype; 543 current = prototype;
544 current_map = handle(current->map()); 544 current_map = handle(current->map());
545 } 545 }
546 546
547 // Log the check depth. 547 // Log the check depth.
548 LOG(isolate(), IntEvent("check-maps-depth", depth + 1)); 548 LOG(isolate(), IntEvent("check-maps-depth", depth + 1));
549 549
550 // Check the holder map. 550 // Check the holder map.
551 if (depth != 0 || check == CHECK_ALL_MAPS) { 551 if (!current_map->IsJSGlobalObjectMap() &&
552 (depth != 0 || check == CHECK_ALL_MAPS)) {
552 // Check the holder map. 553 // Check the holder map.
553 __ Ldr(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset)); 554 __ Ldr(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset));
554 Handle<WeakCell> cell = Map::WeakCellForMap(current_map); 555 Handle<WeakCell> cell = Map::WeakCellForMap(current_map);
555 __ CmpWeakValue(scratch1, cell, scratch2); 556 __ CmpWeakValue(scratch1, cell, scratch2);
556 __ B(ne, miss); 557 __ B(ne, miss);
557 } 558 }
558 559
559 // Return the register containing the holder. 560 // Return the register containing the holder.
560 return reg; 561 return reg;
561 } 562 }
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761 // Return the generated code. 762 // Return the generated code.
762 return GetCode(kind(), Code::FAST, name); 763 return GetCode(kind(), Code::FAST, name);
763 } 764 }
764 765
765 766
766 #undef __ 767 #undef __
767 } 768 }
768 } // namespace v8::internal 769 } // namespace v8::internal
769 770
770 #endif // V8_TARGET_ARCH_IA32 771 #endif // V8_TARGET_ARCH_IA32
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