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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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1084 STATIC_ASSERT(initial_capacity >= 0); 1084 STATIC_ASSERT(initial_capacity >= 0);
1085 1085
1086 __ LoadInitialArrayMap(array_function, scratch2, scratch1, false); 1086 __ LoadInitialArrayMap(array_function, scratch2, scratch1, false);
1087 1087
1088 // Allocate the JSArray object together with space for a fixed array with the 1088 // Allocate the JSArray object together with space for a fixed array with the
1089 // requested elements. 1089 // requested elements.
1090 int size = JSArray::kSize; 1090 int size = JSArray::kSize;
1091 if (initial_capacity > 0) { 1091 if (initial_capacity > 0) {
1092 size += FixedArray::SizeFor(initial_capacity); 1092 size += FixedArray::SizeFor(initial_capacity);
1093 } 1093 }
1094 __ AllocateInNewSpace(size, 1094 __ Allocate(size, result, scratch2, scratch3, gc_required, TAG_OBJECT);
1095 result,
1096 scratch2,
1097 scratch3,
1098 gc_required,
1099 TAG_OBJECT);
1100 1095
1101 // Allocated the JSArray. Now initialize the fields except for the elements 1096 // Allocated the JSArray. Now initialize the fields except for the elements
1102 // array. 1097 // array.
1103 // result: JSObject 1098 // result: JSObject
1104 // scratch1: initial map 1099 // scratch1: initial map
1105 // scratch2: start of next object 1100 // scratch2: start of next object
1106 Factory* factory = masm->isolate()->factory(); 1101 Factory* factory = masm->isolate()->factory();
1107 __ movq(FieldOperand(result, JSObject::kMapOffset), scratch1); 1102 __ movq(FieldOperand(result, JSObject::kMapOffset), scratch1);
1108 __ Move(FieldOperand(result, JSArray::kPropertiesOffset), 1103 __ Move(FieldOperand(result, JSArray::kPropertiesOffset),
1109 factory->empty_fixed_array()); 1104 factory->empty_fixed_array());
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1612 __ bind(&argument_is_string); 1607 __ bind(&argument_is_string);
1613 1608
1614 // ----------- S t a t e ------------- 1609 // ----------- S t a t e -------------
1615 // -- rbx : argument converted to string 1610 // -- rbx : argument converted to string
1616 // -- rdi : constructor function 1611 // -- rdi : constructor function
1617 // -- rsp[0] : return address 1612 // -- rsp[0] : return address
1618 // ----------------------------------- 1613 // -----------------------------------
1619 1614
1620 // Allocate a JSValue and put the tagged pointer into rax. 1615 // Allocate a JSValue and put the tagged pointer into rax.
1621 Label gc_required; 1616 Label gc_required;
1622 __ AllocateInNewSpace(JSValue::kSize, 1617 __ Allocate(JSValue::kSize,
1623 rax, // Result. 1618 rax, // Result.
1624 rcx, // New allocation top (we ignore it). 1619 rcx, // New allocation top (we ignore it).
1625 no_reg, 1620 no_reg,
1626 &gc_required, 1621 &gc_required,
1627 TAG_OBJECT); 1622 TAG_OBJECT);
1628 1623
1629 // Set the map. 1624 // Set the map.
1630 __ LoadGlobalFunctionInitialMap(rdi, rcx); 1625 __ LoadGlobalFunctionInitialMap(rdi, rcx);
1631 if (FLAG_debug_code) { 1626 if (FLAG_debug_code) {
1632 __ cmpb(FieldOperand(rcx, Map::kInstanceSizeOffset), 1627 __ cmpb(FieldOperand(rcx, Map::kInstanceSizeOffset),
1633 Immediate(JSValue::kSize >> kPointerSizeLog2)); 1628 Immediate(JSValue::kSize >> kPointerSizeLog2));
1634 __ Assert(equal, "Unexpected string wrapper instance size"); 1629 __ Assert(equal, "Unexpected string wrapper instance size");
1635 __ cmpb(FieldOperand(rcx, Map::kUnusedPropertyFieldsOffset), Immediate(0)); 1630 __ cmpb(FieldOperand(rcx, Map::kUnusedPropertyFieldsOffset), Immediate(0));
1636 __ Assert(equal, "Unexpected unused properties of string wrapper"); 1631 __ Assert(equal, "Unexpected unused properties of string wrapper");
1637 } 1632 }
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1875 Deoptimizer::EntryGenerator generator(masm, Deoptimizer::OSR); 1870 Deoptimizer::EntryGenerator generator(masm, Deoptimizer::OSR);
1876 generator.Generate(); 1871 generator.Generate();
1877 } 1872 }
1878 1873
1879 1874
1880 #undef __ 1875 #undef __
1881 1876
1882 } } // namespace v8::internal 1877 } } // namespace v8::internal
1883 1878
1884 #endif // V8_TARGET_ARCH_X64 1879 #endif // V8_TARGET_ARCH_X64
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