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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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1890 __ JumpIfSmi(object, &false_result); | 1890 __ JumpIfSmi(object, &false_result); |
1891 | 1891 |
1892 // This is the inlined call site instanceof cache. The two occurences of the | 1892 // This is the inlined call site instanceof cache. The two occurences of the |
1893 // hole value will be patched to the last map/result pair generated by the | 1893 // hole value will be patched to the last map/result pair generated by the |
1894 // instanceof stub. | 1894 // instanceof stub. |
1895 Label cache_miss; | 1895 Label cache_miss; |
1896 // Use a temp register to avoid memory operands with variable lengths. | 1896 // Use a temp register to avoid memory operands with variable lengths. |
1897 Register map = ToRegister(instr->TempAt(0)); | 1897 Register map = ToRegister(instr->TempAt(0)); |
1898 __ movq(map, FieldOperand(object, HeapObject::kMapOffset)); | 1898 __ movq(map, FieldOperand(object, HeapObject::kMapOffset)); |
1899 __ bind(deferred->map_check()); // Label for calculating code patching. | 1899 __ bind(deferred->map_check()); // Label for calculating code patching. |
1900 __ movq(kScratchRegister, factory()->the_hole_value(), | 1900 Handle<JSGlobalPropertyCell> cache_cell = |
1901 RelocInfo::EMBEDDED_OBJECT); | 1901 factory()->NewJSGlobalPropertyCell(factory()->the_hole_value()); |
1902 __ cmpq(map, kScratchRegister); // Patched to cached map. | 1902 __ movq(kScratchRegister, cache_cell, RelocInfo::GLOBAL_PROPERTY_CELL); |
| 1903 __ cmpq(map, Operand(kScratchRegister, 0)); |
1903 __ j(not_equal, &cache_miss, Label::kNear); | 1904 __ j(not_equal, &cache_miss, Label::kNear); |
1904 // Patched to load either true or false. | 1905 // Patched to load either true or false. |
1905 __ LoadRoot(ToRegister(instr->result()), Heap::kTheHoleValueRootIndex); | 1906 __ LoadRoot(ToRegister(instr->result()), Heap::kTheHoleValueRootIndex); |
1906 #ifdef DEBUG | 1907 #ifdef DEBUG |
1907 // Check that the code size between patch label and patch sites is invariant. | 1908 // Check that the code size between patch label and patch sites is invariant. |
1908 Label end_of_patched_code; | 1909 Label end_of_patched_code; |
1909 __ bind(&end_of_patched_code); | 1910 __ bind(&end_of_patched_code); |
1910 ASSERT(true); | 1911 ASSERT(true); |
1911 #endif | 1912 #endif |
1912 __ jmp(&done); | 1913 __ jmp(&done); |
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4329 RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt); | 4330 RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt); |
4330 ASSERT(osr_pc_offset_ == -1); | 4331 ASSERT(osr_pc_offset_ == -1); |
4331 osr_pc_offset_ = masm()->pc_offset(); | 4332 osr_pc_offset_ = masm()->pc_offset(); |
4332 } | 4333 } |
4333 | 4334 |
4334 #undef __ | 4335 #undef __ |
4335 | 4336 |
4336 } } // namespace v8::internal | 4337 } } // namespace v8::internal |
4337 | 4338 |
4338 #endif // V8_TARGET_ARCH_X64 | 4339 #endif // V8_TARGET_ARCH_X64 |
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