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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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1498 if (!result_saved) { | 1498 if (!result_saved) { |
1499 __ push(eax); | 1499 __ push(eax); |
1500 result_saved = true; | 1500 result_saved = true; |
1501 increment_stack_height(); | 1501 increment_stack_height(); |
1502 } | 1502 } |
1503 VisitForAccumulatorValue(subexpr); | 1503 VisitForAccumulatorValue(subexpr); |
1504 | 1504 |
1505 // Store the subexpression value in the array's elements. | 1505 // Store the subexpression value in the array's elements. |
1506 __ mov(ebx, Operand(esp, 0)); // Copy of array literal. | 1506 __ mov(ebx, Operand(esp, 0)); // Copy of array literal. |
1507 __ mov(edi, FieldOperand(ebx, JSObject::kMapOffset)); | 1507 __ mov(edi, FieldOperand(ebx, JSObject::kMapOffset)); |
1508 __ mov(ebx, FieldOperand(ebx, JSObject::kElementsOffset)); | |
1509 int offset = FixedArray::kHeaderSize + (i * kPointerSize); | |
1510 | |
1511 Label element_done; | |
1512 Label double_elements; | |
1513 Label smi_element; | |
1514 Label slow_elements; | |
1515 Label fast_elements; | |
1516 __ CheckFastElements(edi, &double_elements); | |
1517 | |
1518 // FAST_SMI_ONLY_ELEMENTS or FAST_ELEMENTS | |
1519 __ JumpIfSmi(result_register(), &smi_element); | |
1520 __ CheckFastSmiOnlyElements(edi, &fast_elements, Label::kNear); | |
1521 | |
1522 // Store into the array literal requires a elements transition. Call into | |
1523 // the runtime. | |
1524 __ bind(&slow_elements); | |
1525 __ push(Operand(esp, 0)); // Copy of array literal. | |
1526 __ push(Immediate(Smi::FromInt(i))); | |
1527 __ push(result_register()); | |
1528 __ push(Immediate(Smi::FromInt(NONE))); // PropertyAttributes | |
1529 __ push(Immediate(Smi::FromInt(strict_mode_flag()))); // Strict mode. | |
1530 __ CallRuntime(Runtime::kSetProperty, 5); | |
1531 __ jmp(&element_done); | |
1532 | |
1533 // Array literal has ElementsKind of FAST_DOUBLE_ELEMENTS. | |
1534 __ bind(&double_elements); | |
1535 __ mov(ecx, Immediate(Smi::FromInt(i))); | 1508 __ mov(ecx, Immediate(Smi::FromInt(i))); |
1536 __ StoreNumberToDoubleElements(result_register(), | 1509 __ mov(edx, Immediate(Smi::FromInt(expr->literal_index()))); |
1537 ebx, | 1510 StoreArrayLiteralElementStub stub; |
1538 ecx, | 1511 __ CallStub(&stub); |
1539 edx, | |
1540 xmm0, | |
1541 &slow_elements, | |
1542 false); | |
1543 __ jmp(&element_done); | |
1544 | |
1545 // Array literal has ElementsKind of FAST_ELEMENTS and value is an object. | |
1546 __ bind(&fast_elements); | |
1547 __ mov(FieldOperand(ebx, offset), result_register()); | |
1548 // Update the write barrier for the array store. | |
1549 __ RecordWriteField(ebx, offset, result_register(), ecx, | |
1550 kDontSaveFPRegs, | |
1551 EMIT_REMEMBERED_SET, | |
1552 OMIT_SMI_CHECK); | |
1553 __ jmp(&element_done); | |
1554 | |
1555 // Array literal has ElementsKind of FAST_SMI_ONLY_ELEMENTS or | |
1556 // FAST_ELEMENTS, and value is Smi. | |
1557 __ bind(&smi_element); | |
1558 __ mov(FieldOperand(ebx, offset), result_register()); | |
1559 // Fall through | |
1560 | |
1561 __ bind(&element_done); | |
1562 | 1512 |
1563 PrepareForBailoutForId(expr->GetIdForElement(i), NO_REGISTERS); | 1513 PrepareForBailoutForId(expr->GetIdForElement(i), NO_REGISTERS); |
1564 } | 1514 } |
1565 | 1515 |
1566 if (result_saved) { | 1516 if (result_saved) { |
1567 context()->PlugTOS(); | 1517 context()->PlugTOS(); |
1568 } else { | 1518 } else { |
1569 context()->Plug(eax); | 1519 context()->Plug(eax); |
1570 } | 1520 } |
1571 } | 1521 } |
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4386 *context_length = 0; | 4336 *context_length = 0; |
4387 return previous_; | 4337 return previous_; |
4388 } | 4338 } |
4389 | 4339 |
4390 | 4340 |
4391 #undef __ | 4341 #undef __ |
4392 | 4342 |
4393 } } // namespace v8::internal | 4343 } } // namespace v8::internal |
4394 | 4344 |
4395 #endif // V8_TARGET_ARCH_IA32 | 4345 #endif // V8_TARGET_ARCH_IA32 |
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