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Issue 12314155: Allow direct allocation in old pointer space. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 7 years, 9 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 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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1000 STATIC_ASSERT(initial_capacity >= 0); 1000 STATIC_ASSERT(initial_capacity >= 0);
1001 1001
1002 __ LoadInitialArrayMap(array_function, scratch2, scratch1, false); 1002 __ LoadInitialArrayMap(array_function, scratch2, scratch1, false);
1003 1003
1004 // Allocate the JSArray object together with space for a fixed array with the 1004 // Allocate the JSArray object together with space for a fixed array with the
1005 // requested elements. 1005 // requested elements.
1006 int size = JSArray::kSize; 1006 int size = JSArray::kSize;
1007 if (initial_capacity > 0) { 1007 if (initial_capacity > 0) {
1008 size += FixedArray::SizeFor(initial_capacity); 1008 size += FixedArray::SizeFor(initial_capacity);
1009 } 1009 }
1010 __ AllocateInNewSpace(size, 1010 __ Allocate(size, result, scratch2, scratch3, gc_required, TAG_OBJECT);
1011 result,
1012 scratch2,
1013 scratch3,
1014 gc_required,
1015 TAG_OBJECT);
1016 1011
1017 // Allocated the JSArray. Now initialize the fields except for the elements 1012 // Allocated the JSArray. Now initialize the fields except for the elements
1018 // array. 1013 // array.
1019 // result: JSObject 1014 // result: JSObject
1020 // scratch1: initial map 1015 // scratch1: initial map
1021 // scratch2: start of next object 1016 // scratch2: start of next object
1022 __ mov(FieldOperand(result, JSObject::kMapOffset), scratch1); 1017 __ mov(FieldOperand(result, JSObject::kMapOffset), scratch1);
1023 Factory* factory = masm->isolate()->factory(); 1018 Factory* factory = masm->isolate()->factory();
1024 __ mov(FieldOperand(result, JSArray::kPropertiesOffset), 1019 __ mov(FieldOperand(result, JSArray::kPropertiesOffset),
1025 factory->empty_fixed_array()); 1020 factory->empty_fixed_array());
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1585 __ IncrementCounter(counters->string_ctor_cached_number(), 1); 1580 __ IncrementCounter(counters->string_ctor_cached_number(), 1);
1586 __ bind(&argument_is_string); 1581 __ bind(&argument_is_string);
1587 // ----------- S t a t e ------------- 1582 // ----------- S t a t e -------------
1588 // -- ebx : argument converted to string 1583 // -- ebx : argument converted to string
1589 // -- edi : constructor function 1584 // -- edi : constructor function
1590 // -- esp[0] : return address 1585 // -- esp[0] : return address
1591 // ----------------------------------- 1586 // -----------------------------------
1592 1587
1593 // Allocate a JSValue and put the tagged pointer into eax. 1588 // Allocate a JSValue and put the tagged pointer into eax.
1594 Label gc_required; 1589 Label gc_required;
1595 __ AllocateInNewSpace(JSValue::kSize, 1590 __ Allocate(JSValue::kSize,
1596 eax, // Result. 1591 eax, // Result.
1597 ecx, // New allocation top (we ignore it). 1592 ecx, // New allocation top (we ignore it).
1598 no_reg, 1593 no_reg,
1599 &gc_required, 1594 &gc_required,
1600 TAG_OBJECT); 1595 TAG_OBJECT);
1601 1596
1602 // Set the map. 1597 // Set the map.
1603 __ LoadGlobalFunctionInitialMap(edi, ecx); 1598 __ LoadGlobalFunctionInitialMap(edi, ecx);
1604 if (FLAG_debug_code) { 1599 if (FLAG_debug_code) {
1605 __ cmpb(FieldOperand(ecx, Map::kInstanceSizeOffset), 1600 __ cmpb(FieldOperand(ecx, Map::kInstanceSizeOffset),
1606 JSValue::kSize >> kPointerSizeLog2); 1601 JSValue::kSize >> kPointerSizeLog2);
1607 __ Assert(equal, "Unexpected string wrapper instance size"); 1602 __ Assert(equal, "Unexpected string wrapper instance size");
1608 __ cmpb(FieldOperand(ecx, Map::kUnusedPropertyFieldsOffset), 0); 1603 __ cmpb(FieldOperand(ecx, Map::kUnusedPropertyFieldsOffset), 0);
1609 __ Assert(equal, "Unexpected unused properties of string wrapper"); 1604 __ Assert(equal, "Unexpected unused properties of string wrapper");
1610 } 1605 }
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1856 Deoptimizer::EntryGenerator generator(masm, Deoptimizer::OSR); 1851 Deoptimizer::EntryGenerator generator(masm, Deoptimizer::OSR);
1857 generator.Generate(); 1852 generator.Generate();
1858 } 1853 }
1859 1854
1860 1855
1861 #undef __ 1856 #undef __
1862 } 1857 }
1863 } // namespace v8::internal 1858 } // namespace v8::internal
1864 1859
1865 #endif // V8_TARGET_ARCH_IA32 1860 #endif // V8_TARGET_ARCH_IA32
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