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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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1076 STATIC_ASSERT(initial_capacity >= 0); 1076 STATIC_ASSERT(initial_capacity >= 0);
1077 1077
1078 __ LoadInitialArrayMap(array_function, scratch2, scratch1, false); 1078 __ LoadInitialArrayMap(array_function, scratch2, scratch1, false);
1079 1079
1080 // Allocate the JSArray object together with space for a fixed array with the 1080 // Allocate the JSArray object together with space for a fixed array with the
1081 // requested elements. 1081 // requested elements.
1082 int size = JSArray::kSize; 1082 int size = JSArray::kSize;
1083 if (initial_capacity > 0) { 1083 if (initial_capacity > 0) {
1084 size += FixedArray::SizeFor(initial_capacity); 1084 size += FixedArray::SizeFor(initial_capacity);
1085 } 1085 }
1086 __ AllocateInNewSpace(size, 1086 __ Allocate(size, result, scratch2, scratch3, gc_required, TAG_OBJECT,
1087 result, 1087 MacroAssembler::NEW_SPACE);
1088 scratch2,
1089 scratch3,
1090 gc_required,
1091 TAG_OBJECT);
1092 1088
1093 // Allocated the JSArray. Now initialize the fields except for the elements 1089 // Allocated the JSArray. Now initialize the fields except for the elements
1094 // array. 1090 // array.
1095 // result: JSObject 1091 // result: JSObject
1096 // scratch1: initial map 1092 // scratch1: initial map
1097 // scratch2: start of next object 1093 // scratch2: start of next object
1098 Factory* factory = masm->isolate()->factory(); 1094 Factory* factory = masm->isolate()->factory();
1099 __ movq(FieldOperand(result, JSObject::kMapOffset), scratch1); 1095 __ movq(FieldOperand(result, JSObject::kMapOffset), scratch1);
1100 __ Move(FieldOperand(result, JSArray::kPropertiesOffset), 1096 __ Move(FieldOperand(result, JSArray::kPropertiesOffset),
1101 factory->empty_fixed_array()); 1097 factory->empty_fixed_array());
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1572 __ bind(&argument_is_string); 1568 __ bind(&argument_is_string);
1573 1569
1574 // ----------- S t a t e ------------- 1570 // ----------- S t a t e -------------
1575 // -- rbx : argument converted to string 1571 // -- rbx : argument converted to string
1576 // -- rdi : constructor function 1572 // -- rdi : constructor function
1577 // -- rsp[0] : return address 1573 // -- rsp[0] : return address
1578 // ----------------------------------- 1574 // -----------------------------------
1579 1575
1580 // Allocate a JSValue and put the tagged pointer into rax. 1576 // Allocate a JSValue and put the tagged pointer into rax.
1581 Label gc_required; 1577 Label gc_required;
1582 __ AllocateInNewSpace(JSValue::kSize, 1578 __ Allocate(JSValue::kSize,
1583 rax, // Result. 1579 rax, // Result.
1584 rcx, // New allocation top (we ignore it). 1580 rcx, // New allocation top (we ignore it).
1585 no_reg, 1581 no_reg,
1586 &gc_required, 1582 &gc_required,
1587 TAG_OBJECT); 1583 TAG_OBJECT,
1584 MacroAssembler::NEW_SPACE);
1588 1585
1589 // Set the map. 1586 // Set the map.
1590 __ LoadGlobalFunctionInitialMap(rdi, rcx); 1587 __ LoadGlobalFunctionInitialMap(rdi, rcx);
1591 if (FLAG_debug_code) { 1588 if (FLAG_debug_code) {
1592 __ cmpb(FieldOperand(rcx, Map::kInstanceSizeOffset), 1589 __ cmpb(FieldOperand(rcx, Map::kInstanceSizeOffset),
1593 Immediate(JSValue::kSize >> kPointerSizeLog2)); 1590 Immediate(JSValue::kSize >> kPointerSizeLog2));
1594 __ Assert(equal, "Unexpected string wrapper instance size"); 1591 __ Assert(equal, "Unexpected string wrapper instance size");
1595 __ cmpb(FieldOperand(rcx, Map::kUnusedPropertyFieldsOffset), Immediate(0)); 1592 __ cmpb(FieldOperand(rcx, Map::kUnusedPropertyFieldsOffset), Immediate(0));
1596 __ Assert(equal, "Unexpected unused properties of string wrapper"); 1593 __ Assert(equal, "Unexpected unused properties of string wrapper");
1597 } 1594 }
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1835 Deoptimizer::EntryGenerator generator(masm, Deoptimizer::OSR); 1832 Deoptimizer::EntryGenerator generator(masm, Deoptimizer::OSR);
1836 generator.Generate(); 1833 generator.Generate();
1837 } 1834 }
1838 1835
1839 1836
1840 #undef __ 1837 #undef __
1841 1838
1842 } } // namespace v8::internal 1839 } } // namespace v8::internal
1843 1840
1844 #endif // V8_TARGET_ARCH_X64 1841 #endif // V8_TARGET_ARCH_X64
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