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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_X64 7 #if V8_TARGET_ARCH_X64
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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493 } 493 }
494 494
495 // Go to the next object in the prototype chain. 495 // Go to the next object in the prototype chain.
496 current = prototype; 496 current = prototype;
497 current_map = handle(current->map()); 497 current_map = handle(current->map());
498 } 498 }
499 499
500 // Log the check depth. 500 // Log the check depth.
501 LOG(isolate(), IntEvent("check-maps-depth", depth + 1)); 501 LOG(isolate(), IntEvent("check-maps-depth", depth + 1));
502 502
503 if (depth != 0 || check == CHECK_ALL_MAPS) { 503 if (!current_map->IsJSGlobalObjectMap() &&
504 (depth != 0 || check == CHECK_ALL_MAPS)) {
504 __ movp(scratch1, FieldOperand(reg, HeapObject::kMapOffset)); 505 __ movp(scratch1, FieldOperand(reg, HeapObject::kMapOffset));
505 Handle<WeakCell> cell = Map::WeakCellForMap(current_map); 506 Handle<WeakCell> cell = Map::WeakCellForMap(current_map);
506 __ CmpWeakValue(scratch1, cell, scratch2); 507 __ CmpWeakValue(scratch1, cell, scratch2);
507 __ j(not_equal, miss); 508 __ j(not_equal, miss);
508 } 509 }
509 510
510 // Return the register containing the holder. 511 // Return the register containing the holder.
511 return reg; 512 return reg;
512 } 513 }
513 514
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759 // Return the generated code. 760 // Return the generated code.
760 return GetCode(kind(), Code::NORMAL, name); 761 return GetCode(kind(), Code::NORMAL, name);
761 } 762 }
762 763
763 764
764 #undef __ 765 #undef __
765 } 766 }
766 } // namespace v8::internal 767 } // namespace v8::internal
767 768
768 #endif // V8_TARGET_ARCH_X64 769 #endif // V8_TARGET_ARCH_X64
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