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Issue 1623008: Remove redundant null oddball initialization.... (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: Created 10 years, 8 months ago
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1 // Copyright 2009 the V8 project authors. All rights reserved. 1 // Copyright 2009 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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1480 1480
1481 Object* Heap::AllocateJSGlobalPropertyCell(Object* value) { 1481 Object* Heap::AllocateJSGlobalPropertyCell(Object* value) {
1482 Object* result = AllocateRawCell(); 1482 Object* result = AllocateRawCell();
1483 if (result->IsFailure()) return result; 1483 if (result->IsFailure()) return result;
1484 HeapObject::cast(result)->set_map(global_property_cell_map()); 1484 HeapObject::cast(result)->set_map(global_property_cell_map());
1485 JSGlobalPropertyCell::cast(result)->set_value(value); 1485 JSGlobalPropertyCell::cast(result)->set_value(value);
1486 return result; 1486 return result;
1487 } 1487 }
1488 1488
1489 1489
1490 Object* Heap::CreateOddball(Map* map, 1490 Object* Heap::CreateOddball(const char* to_string,
1491 const char* to_string,
1492 Object* to_number) { 1491 Object* to_number) {
1493 Object* result = Allocate(map, OLD_DATA_SPACE); 1492 Object* result = Allocate(oddball_map(), OLD_DATA_SPACE);
1494 if (result->IsFailure()) return result; 1493 if (result->IsFailure()) return result;
1495 return Oddball::cast(result)->Initialize(to_string, to_number); 1494 return Oddball::cast(result)->Initialize(to_string, to_number);
1496 } 1495 }
1497 1496
1498 1497
1499 bool Heap::CreateApiObjects() { 1498 bool Heap::CreateApiObjects() {
1500 Object* obj; 1499 Object* obj;
1501 1500
1502 obj = AllocateMap(JS_OBJECT_TYPE, JSObject::kHeaderSize); 1501 obj = AllocateMap(JS_OBJECT_TYPE, JSObject::kHeaderSize);
1503 if (obj->IsFailure()) return false; 1502 if (obj->IsFailure()) return false;
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1587 if (obj->IsFailure()) return false; 1586 if (obj->IsFailure()) return false;
1588 // Don't use set_symbol_table() due to asserts. 1587 // Don't use set_symbol_table() due to asserts.
1589 roots_[kSymbolTableRootIndex] = obj; 1588 roots_[kSymbolTableRootIndex] = obj;
1590 1589
1591 // Assign the print strings for oddballs after creating symboltable. 1590 // Assign the print strings for oddballs after creating symboltable.
1592 Object* symbol = LookupAsciiSymbol("undefined"); 1591 Object* symbol = LookupAsciiSymbol("undefined");
1593 if (symbol->IsFailure()) return false; 1592 if (symbol->IsFailure()) return false;
1594 Oddball::cast(undefined_value())->set_to_string(String::cast(symbol)); 1593 Oddball::cast(undefined_value())->set_to_string(String::cast(symbol));
1595 Oddball::cast(undefined_value())->set_to_number(nan_value()); 1594 Oddball::cast(undefined_value())->set_to_number(nan_value());
1596 1595
1597 // Assign the print strings for oddballs after creating symboltable.
1598 symbol = LookupAsciiSymbol("null");
1599 if (symbol->IsFailure()) return false;
1600 Oddball::cast(null_value())->set_to_string(String::cast(symbol));
1601 Oddball::cast(null_value())->set_to_number(Smi::FromInt(0));
1602
1603 // Allocate the null_value 1596 // Allocate the null_value
1604 obj = Oddball::cast(null_value())->Initialize("null", Smi::FromInt(0)); 1597 obj = Oddball::cast(null_value())->Initialize("null", Smi::FromInt(0));
1605 if (obj->IsFailure()) return false; 1598 if (obj->IsFailure()) return false;
1606 1599
1607 obj = CreateOddball(oddball_map(), "true", Smi::FromInt(1)); 1600 obj = CreateOddball("true", Smi::FromInt(1));
1608 if (obj->IsFailure()) return false; 1601 if (obj->IsFailure()) return false;
1609 set_true_value(obj); 1602 set_true_value(obj);
1610 1603
1611 obj = CreateOddball(oddball_map(), "false", Smi::FromInt(0)); 1604 obj = CreateOddball("false", Smi::FromInt(0));
1612 if (obj->IsFailure()) return false; 1605 if (obj->IsFailure()) return false;
1613 set_false_value(obj); 1606 set_false_value(obj);
1614 1607
1615 obj = CreateOddball(oddball_map(), "hole", Smi::FromInt(-1)); 1608 obj = CreateOddball("hole", Smi::FromInt(-1));
1616 if (obj->IsFailure()) return false; 1609 if (obj->IsFailure()) return false;
1617 set_the_hole_value(obj); 1610 set_the_hole_value(obj);
1618 1611
1619 obj = CreateOddball( 1612 obj = CreateOddball("no_interceptor_result_sentinel", Smi::FromInt(-2));
1620 oddball_map(), "no_interceptor_result_sentinel", Smi::FromInt(-2));
1621 if (obj->IsFailure()) return false; 1613 if (obj->IsFailure()) return false;
1622 set_no_interceptor_result_sentinel(obj); 1614 set_no_interceptor_result_sentinel(obj);
1623 1615
1624 obj = CreateOddball(oddball_map(), "termination_exception", Smi::FromInt(-3)); 1616 obj = CreateOddball("termination_exception", Smi::FromInt(-3));
1625 if (obj->IsFailure()) return false; 1617 if (obj->IsFailure()) return false;
1626 set_termination_exception(obj); 1618 set_termination_exception(obj);
1627 1619
1628 // Allocate the empty string. 1620 // Allocate the empty string.
1629 obj = AllocateRawAsciiString(0, TENURED); 1621 obj = AllocateRawAsciiString(0, TENURED);
1630 if (obj->IsFailure()) return false; 1622 if (obj->IsFailure()) return false;
1631 set_empty_string(String::cast(obj)); 1623 set_empty_string(String::cast(obj));
1632 1624
1633 for (unsigned i = 0; i < ARRAY_SIZE(constant_symbol_table); i++) { 1625 for (unsigned i = 0; i < ARRAY_SIZE(constant_symbol_table); i++) {
1634 obj = LookupAsciiSymbol(constant_symbol_table[i].contents); 1626 obj = LookupAsciiSymbol(constant_symbol_table[i].contents);
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4388 void ExternalStringTable::TearDown() { 4380 void ExternalStringTable::TearDown() {
4389 new_space_strings_.Free(); 4381 new_space_strings_.Free();
4390 old_space_strings_.Free(); 4382 old_space_strings_.Free();
4391 } 4383 }
4392 4384
4393 4385
4394 List<Object*> ExternalStringTable::new_space_strings_; 4386 List<Object*> ExternalStringTable::new_space_strings_;
4395 List<Object*> ExternalStringTable::old_space_strings_; 4387 List<Object*> ExternalStringTable::old_space_strings_;
4396 4388
4397 } } // namespace v8::internal 4389 } } // namespace v8::internal
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