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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_MIPS64 | 7 #if V8_TARGET_ARCH_MIPS64 |
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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446 | 446 |
447 GenerateDictionaryNegativeLookup(masm(), miss, reg, name, scratch1, | 447 GenerateDictionaryNegativeLookup(masm(), miss, reg, name, scratch1, |
448 scratch2); | 448 scratch2); |
449 | 449 |
450 __ ld(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset)); | 450 __ ld(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset)); |
451 reg = holder_reg; // From now on the object will be in holder_reg. | 451 reg = holder_reg; // From now on the object will be in holder_reg. |
452 __ ld(reg, FieldMemOperand(scratch1, Map::kPrototypeOffset)); | 452 __ ld(reg, FieldMemOperand(scratch1, Map::kPrototypeOffset)); |
453 } else { | 453 } else { |
454 Register map_reg = scratch1; | 454 Register map_reg = scratch1; |
455 __ ld(map_reg, FieldMemOperand(reg, HeapObject::kMapOffset)); | 455 __ ld(map_reg, FieldMemOperand(reg, HeapObject::kMapOffset)); |
456 if (depth != 1 || check == CHECK_ALL_MAPS) { | |
457 Handle<WeakCell> cell = Map::WeakCellForMap(current_map); | |
458 __ GetWeakValue(scratch2, cell); | |
459 __ Branch(miss, ne, scratch2, Operand(map_reg)); | |
460 } | |
461 | 456 |
462 // Check access rights to the global object. This has to happen after | 457 // Check access rights to the global object. This has to happen after |
463 // the map check so that we know that the object is actually a global | 458 // the map check so that we know that the object is actually a global |
464 // object. | 459 // object. |
465 // This allows us to install generated handlers for accesses to the | 460 // This allows us to install generated handlers for accesses to the |
466 // global proxy (as opposed to using slow ICs). See corresponding code | 461 // global proxy (as opposed to using slow ICs). See corresponding code |
467 // in LookupForRead(). | 462 // in LookupForRead(). |
468 if (current_map->IsJSGlobalProxyMap()) { | 463 if (current_map->IsJSGlobalProxyMap()) { |
469 __ CheckAccessGlobalProxy(reg, scratch2, miss); | 464 __ CheckAccessGlobalProxy(reg, scratch2, miss); |
470 } else if (current_map->IsJSGlobalObjectMap()) { | 465 } else if (current_map->IsJSGlobalObjectMap()) { |
471 GenerateCheckPropertyCell(masm(), Handle<JSGlobalObject>::cast(current), | 466 GenerateCheckPropertyCell(masm(), Handle<JSGlobalObject>::cast(current), |
472 name, scratch2, miss); | 467 name, scratch2, miss); |
| 468 } else if (depth != 1 || check == CHECK_ALL_MAPS) { |
| 469 Handle<WeakCell> cell = Map::WeakCellForMap(current_map); |
| 470 __ GetWeakValue(scratch2, cell); |
| 471 __ Branch(miss, ne, scratch2, Operand(map_reg)); |
473 } | 472 } |
474 | 473 |
475 reg = holder_reg; // From now on the object will be in holder_reg. | 474 reg = holder_reg; // From now on the object will be in holder_reg. |
476 | 475 |
477 __ ld(reg, FieldMemOperand(map_reg, Map::kPrototypeOffset)); | 476 __ ld(reg, FieldMemOperand(map_reg, Map::kPrototypeOffset)); |
478 } | 477 } |
479 | 478 |
480 // Go to the next object in the prototype chain. | 479 // Go to the next object in the prototype chain. |
481 current = prototype; | 480 current = prototype; |
482 current_map = handle(current->map()); | 481 current_map = handle(current->map()); |
483 } | 482 } |
484 | 483 |
| 484 DCHECK(!current_map->IsJSGlobalProxyMap()); |
| 485 |
485 // Log the check depth. | 486 // Log the check depth. |
486 LOG(isolate(), IntEvent("check-maps-depth", depth + 1)); | 487 LOG(isolate(), IntEvent("check-maps-depth", depth + 1)); |
487 | 488 |
488 if (depth != 0 || check == CHECK_ALL_MAPS) { | 489 if (depth != 0 || check == CHECK_ALL_MAPS) { |
489 // Check the holder map. | 490 // Check the holder map. |
490 __ ld(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset)); | 491 __ ld(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset)); |
491 Handle<WeakCell> cell = Map::WeakCellForMap(current_map); | 492 Handle<WeakCell> cell = Map::WeakCellForMap(current_map); |
492 __ GetWeakValue(scratch2, cell); | 493 __ GetWeakValue(scratch2, cell); |
493 __ Branch(miss, ne, scratch2, Operand(scratch1)); | 494 __ Branch(miss, ne, scratch2, Operand(scratch1)); |
494 } | 495 } |
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743 // Return the generated code. | 744 // Return the generated code. |
744 return GetCode(kind(), Code::NORMAL, name); | 745 return GetCode(kind(), Code::NORMAL, name); |
745 } | 746 } |
746 | 747 |
747 | 748 |
748 #undef __ | 749 #undef __ |
749 } | 750 } |
750 } // namespace v8::internal | 751 } // namespace v8::internal |
751 | 752 |
752 #endif // V8_TARGET_ARCH_MIPS64 | 753 #endif // V8_TARGET_ARCH_MIPS64 |
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