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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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| 317 FACTORY->fixed_array_map(), | 317 FACTORY->fixed_array_map(), |
| 318 not_fast_array, | 318 not_fast_array, |
| 319 DONT_DO_SMI_CHECK); | 319 DONT_DO_SMI_CHECK); |
| 320 } else { | 320 } else { |
| 321 __ AssertFastElements(scratch); | 321 __ AssertFastElements(scratch); |
| 322 } | 322 } |
| 323 // Check that the key (index) is within bounds. | 323 // Check that the key (index) is within bounds. |
| 324 __ cmp(key, FieldOperand(scratch, FixedArray::kLengthOffset)); | 324 __ cmp(key, FieldOperand(scratch, FixedArray::kLengthOffset)); |
| 325 __ j(above_equal, out_of_range); | 325 __ j(above_equal, out_of_range); |
| 326 // Fast case: Do the load. | 326 // Fast case: Do the load. |
| 327 ASSERT((kPointerSize == 4) && (kSmiTagSize == 1) && (kSmiTag == 0)); | 327 STATIC_ASSERT((kPointerSize == 4) && (kSmiTagSize == 1) && (kSmiTag == 0)); |
| 328 __ mov(scratch, FieldOperand(scratch, key, times_2, FixedArray::kHeaderSize)); | 328 __ mov(scratch, FieldOperand(scratch, key, times_2, FixedArray::kHeaderSize)); |
| 329 __ cmp(Operand(scratch), Immediate(FACTORY->the_hole_value())); | 329 __ cmp(Operand(scratch), Immediate(FACTORY->the_hole_value())); |
| 330 // In case the loaded value is the_hole we have to consult GetProperty | 330 // In case the loaded value is the_hole we have to consult GetProperty |
| 331 // to ensure the prototype chain is searched. | 331 // to ensure the prototype chain is searched. |
| 332 __ j(equal, out_of_range); | 332 __ j(equal, out_of_range); |
| 333 if (!result.is(scratch)) { | 333 if (!result.is(scratch)) { |
| 334 __ mov(result, scratch); | 334 __ mov(result, scratch); |
| 335 } | 335 } |
| 336 } | 336 } |
| 337 | 337 |
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| 351 // hash - used to hold the hash of the key. | 351 // hash - used to hold the hash of the key. |
| 352 __ CmpObjectType(key, FIRST_NONSTRING_TYPE, map); | 352 __ CmpObjectType(key, FIRST_NONSTRING_TYPE, map); |
| 353 __ j(above_equal, not_symbol); | 353 __ j(above_equal, not_symbol); |
| 354 | 354 |
| 355 // Is the string an array index, with cached numeric value? | 355 // Is the string an array index, with cached numeric value? |
| 356 __ mov(hash, FieldOperand(key, String::kHashFieldOffset)); | 356 __ mov(hash, FieldOperand(key, String::kHashFieldOffset)); |
| 357 __ test(hash, Immediate(String::kContainsCachedArrayIndexMask)); | 357 __ test(hash, Immediate(String::kContainsCachedArrayIndexMask)); |
| 358 __ j(zero, index_string); | 358 __ j(zero, index_string); |
| 359 | 359 |
| 360 // Is the string a symbol? | 360 // Is the string a symbol? |
| 361 ASSERT(kSymbolTag != 0); | 361 STATIC_ASSERT(kSymbolTag != 0); |
| 362 __ test_b(FieldOperand(map, Map::kInstanceTypeOffset), kIsSymbolMask); | 362 __ test_b(FieldOperand(map, Map::kInstanceTypeOffset), kIsSymbolMask); |
| 363 __ j(zero, not_symbol); | 363 __ j(zero, not_symbol); |
| 364 } | 364 } |
| 365 | 365 |
| 366 | 366 |
| 367 static Operand GenerateMappedArgumentsLookup(MacroAssembler* masm, | 367 static Operand GenerateMappedArgumentsLookup(MacroAssembler* masm, |
| 368 Register object, | 368 Register object, |
| 369 Register key, | 369 Register key, |
| 370 Register scratch1, | 370 Register scratch1, |
| 371 Register scratch2, | 371 Register scratch2, |
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| 1637 Condition cc = *jmp_address == Assembler::kJncShortOpcode | 1637 Condition cc = *jmp_address == Assembler::kJncShortOpcode |
| 1638 ? not_zero | 1638 ? not_zero |
| 1639 : zero; | 1639 : zero; |
| 1640 *jmp_address = static_cast<byte>(Assembler::kJccShortPrefix | cc); | 1640 *jmp_address = static_cast<byte>(Assembler::kJccShortPrefix | cc); |
| 1641 } | 1641 } |
| 1642 | 1642 |
| 1643 | 1643 |
| 1644 } } // namespace v8::internal | 1644 } } // namespace v8::internal |
| 1645 | 1645 |
| 1646 #endif // V8_TARGET_ARCH_IA32 | 1646 #endif // V8_TARGET_ARCH_IA32 |
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