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Issue 12413026: MIPS: 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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121 const int initial_capacity = JSArray::kPreallocatedArrayElements; 121 const int initial_capacity = JSArray::kPreallocatedArrayElements;
122 STATIC_ASSERT(initial_capacity >= 0); 122 STATIC_ASSERT(initial_capacity >= 0);
123 __ LoadInitialArrayMap(array_function, scratch2, scratch1, false); 123 __ LoadInitialArrayMap(array_function, scratch2, scratch1, false);
124 124
125 // Allocate the JSArray object together with space for a fixed array with the 125 // Allocate the JSArray object together with space for a fixed array with the
126 // requested elements. 126 // requested elements.
127 int size = JSArray::kSize; 127 int size = JSArray::kSize;
128 if (initial_capacity > 0) { 128 if (initial_capacity > 0) {
129 size += FixedArray::SizeFor(initial_capacity); 129 size += FixedArray::SizeFor(initial_capacity);
130 } 130 }
131 __ AllocateInNewSpace(size, 131 __ Allocate(size, result, scratch2, scratch3, gc_required, TAG_OBJECT);
132 result, 132
133 scratch2,
134 scratch3,
135 gc_required,
136 TAG_OBJECT);
137 // Allocated the JSArray. Now initialize the fields except for the elements 133 // Allocated the JSArray. Now initialize the fields except for the elements
138 // array. 134 // array.
139 // result: JSObject 135 // result: JSObject
140 // scratch1: initial map 136 // scratch1: initial map
141 // scratch2: start of next object 137 // scratch2: start of next object
142 __ sw(scratch1, FieldMemOperand(result, JSObject::kMapOffset)); 138 __ sw(scratch1, FieldMemOperand(result, JSObject::kMapOffset));
143 __ LoadRoot(scratch1, Heap::kEmptyFixedArrayRootIndex); 139 __ LoadRoot(scratch1, Heap::kEmptyFixedArrayRootIndex);
144 __ sw(scratch1, FieldMemOperand(result, JSArray::kPropertiesOffset)); 140 __ sw(scratch1, FieldMemOperand(result, JSArray::kPropertiesOffset));
145 // Field JSArray::kElementsOffset is initialized later. 141 // Field JSArray::kElementsOffset is initialized later.
146 __ mov(scratch3, zero_reg); 142 __ mov(scratch3, zero_reg);
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658 __ IncrementCounter(counters->string_ctor_cached_number(), 1, a3, t0); 654 __ IncrementCounter(counters->string_ctor_cached_number(), 1, a3, t0);
659 __ bind(&argument_is_string); 655 __ bind(&argument_is_string);
660 656
661 // ----------- S t a t e ------------- 657 // ----------- S t a t e -------------
662 // -- a2 : argument converted to string 658 // -- a2 : argument converted to string
663 // -- a1 : constructor function 659 // -- a1 : constructor function
664 // -- ra : return address 660 // -- ra : return address
665 // ----------------------------------- 661 // -----------------------------------
666 662
667 Label gc_required; 663 Label gc_required;
668 __ AllocateInNewSpace(JSValue::kSize, 664 __ Allocate(JSValue::kSize,
669 v0, // Result. 665 v0, // Result.
670 a3, // Scratch. 666 a3, // Scratch.
671 t0, // Scratch. 667 t0, // Scratch.
672 &gc_required, 668 &gc_required,
673 TAG_OBJECT); 669 TAG_OBJECT);
674 670
675 // Initialising the String Object. 671 // Initialising the String Object.
676 Register map = a3; 672 Register map = a3;
677 __ LoadGlobalFunctionInitialMap(function, map, t0); 673 __ LoadGlobalFunctionInitialMap(function, map, t0);
678 if (FLAG_debug_code) { 674 if (FLAG_debug_code) {
679 __ lbu(t0, FieldMemOperand(map, Map::kInstanceSizeOffset)); 675 __ lbu(t0, FieldMemOperand(map, Map::kInstanceSizeOffset));
680 __ Assert(eq, "Unexpected string wrapper instance size", 676 __ Assert(eq, "Unexpected string wrapper instance size",
681 t0, Operand(JSValue::kSize >> kPointerSizeLog2)); 677 t0, Operand(JSValue::kSize >> kPointerSizeLog2));
682 __ lbu(t0, FieldMemOperand(map, Map::kUnusedPropertyFieldsOffset)); 678 __ lbu(t0, FieldMemOperand(map, Map::kUnusedPropertyFieldsOffset));
683 __ Assert(eq, "Unexpected unused properties of string wrapper", 679 __ Assert(eq, "Unexpected unused properties of string wrapper",
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1957 __ bind(&dont_adapt_arguments); 1953 __ bind(&dont_adapt_arguments);
1958 __ Jump(a3); 1954 __ Jump(a3);
1959 } 1955 }
1960 1956
1961 1957
1962 #undef __ 1958 #undef __
1963 1959
1964 } } // namespace v8::internal 1960 } } // namespace v8::internal
1965 1961
1966 #endif // V8_TARGET_ARCH_MIPS 1962 #endif // V8_TARGET_ARCH_MIPS
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