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Issue 12855004: MIPS: Generalizing remaining Allocate functions in the macro assemblers used in pretenuring. (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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220 ne, "array size is unexpectedly 0", array_size, Operand(zero_reg)); 220 ne, "array size is unexpectedly 0", array_size, Operand(zero_reg));
221 } 221 }
222 222
223 // Allocate the JSArray object together with space for a FixedArray with the 223 // Allocate the JSArray object together with space for a FixedArray with the
224 // requested number of elements. 224 // requested number of elements.
225 STATIC_ASSERT(kSmiTagSize == 1 && kSmiTag == 0); 225 STATIC_ASSERT(kSmiTagSize == 1 && kSmiTag == 0);
226 __ li(elements_array_end, 226 __ li(elements_array_end,
227 (JSArray::kSize + FixedArray::kHeaderSize) / kPointerSize); 227 (JSArray::kSize + FixedArray::kHeaderSize) / kPointerSize);
228 __ sra(scratch1, array_size, kSmiTagSize); 228 __ sra(scratch1, array_size, kSmiTagSize);
229 __ Addu(elements_array_end, elements_array_end, scratch1); 229 __ Addu(elements_array_end, elements_array_end, scratch1);
230 __ AllocateInNewSpace( 230 __ Allocate(elements_array_end,
231 elements_array_end, 231 result,
232 result, 232 scratch1,
233 scratch1, 233 scratch2,
234 scratch2, 234 gc_required,
235 gc_required, 235 static_cast<AllocationFlags>(TAG_OBJECT | SIZE_IN_WORDS));
236 static_cast<AllocationFlags>(TAG_OBJECT | SIZE_IN_WORDS));
237 236
238 // Allocated the JSArray. Now initialize the fields except for the elements 237 // Allocated the JSArray. Now initialize the fields except for the elements
239 // array. 238 // array.
240 // result: JSObject 239 // result: JSObject
241 // elements_array_storage: initial map 240 // elements_array_storage: initial map
242 // array_size: size of array (smi) 241 // array_size: size of array (smi)
243 __ sw(elements_array_storage, FieldMemOperand(result, JSObject::kMapOffset)); 242 __ sw(elements_array_storage, FieldMemOperand(result, JSObject::kMapOffset));
244 __ LoadRoot(elements_array_storage, Heap::kEmptyFixedArrayRootIndex); 243 __ LoadRoot(elements_array_storage, Heap::kEmptyFixedArrayRootIndex);
245 __ sw(elements_array_storage, 244 __ sw(elements_array_storage,
246 FieldMemOperand(result, JSArray::kPropertiesOffset)); 245 FieldMemOperand(result, JSArray::kPropertiesOffset));
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888 __ pop(a2); 887 __ pop(a2);
889 __ pop(a1); 888 __ pop(a1);
890 889
891 __ bind(&allocate); 890 __ bind(&allocate);
892 } 891 }
893 892
894 // Now allocate the JSObject on the heap. 893 // Now allocate the JSObject on the heap.
895 // a1: constructor function 894 // a1: constructor function
896 // a2: initial map 895 // a2: initial map
897 __ lbu(a3, FieldMemOperand(a2, Map::kInstanceSizeOffset)); 896 __ lbu(a3, FieldMemOperand(a2, Map::kInstanceSizeOffset));
898 __ AllocateInNewSpace(a3, t4, t5, t6, &rt_call, SIZE_IN_WORDS); 897 __ Allocate(a3, t4, t5, t6, &rt_call, SIZE_IN_WORDS);
899 898
900 // Allocated the JSObject, now initialize the fields. Map is set to 899 // Allocated the JSObject, now initialize the fields. Map is set to
901 // initial map and properties and elements are set to empty fixed array. 900 // initial map and properties and elements are set to empty fixed array.
902 // a1: constructor function 901 // a1: constructor function
903 // a2: initial map 902 // a2: initial map
904 // a3: object size 903 // a3: object size
905 // t4: JSObject (not tagged) 904 // t4: JSObject (not tagged)
906 __ LoadRoot(t6, Heap::kEmptyFixedArrayRootIndex); 905 __ LoadRoot(t6, Heap::kEmptyFixedArrayRootIndex);
907 __ mov(t5, t4); 906 __ mov(t5, t4);
908 __ sw(a2, MemOperand(t5, JSObject::kMapOffset)); 907 __ sw(a2, MemOperand(t5, JSObject::kMapOffset));
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967 __ Assert(greater_equal, "Property allocation count failed.", 966 __ Assert(greater_equal, "Property allocation count failed.",
968 a3, Operand(zero_reg)); 967 a3, Operand(zero_reg));
969 968
970 // Scale the number of elements by pointer size and add the header for 969 // Scale the number of elements by pointer size and add the header for
971 // FixedArrays to the start of the next object calculation from above. 970 // FixedArrays to the start of the next object calculation from above.
972 // a1: constructor 971 // a1: constructor
973 // a3: number of elements in properties array 972 // a3: number of elements in properties array
974 // t4: JSObject 973 // t4: JSObject
975 // t5: start of next object 974 // t5: start of next object
976 __ Addu(a0, a3, Operand(FixedArray::kHeaderSize / kPointerSize)); 975 __ Addu(a0, a3, Operand(FixedArray::kHeaderSize / kPointerSize));
977 __ AllocateInNewSpace( 976 __ Allocate(
978 a0, 977 a0,
979 t5, 978 t5,
980 t6, 979 t6,
981 a2, 980 a2,
982 &undo_allocation, 981 &undo_allocation,
983 static_cast<AllocationFlags>(RESULT_CONTAINS_TOP | SIZE_IN_WORDS)); 982 static_cast<AllocationFlags>(RESULT_CONTAINS_TOP | SIZE_IN_WORDS));
984 983
985 // Initialize the FixedArray. 984 // Initialize the FixedArray.
986 // a1: constructor 985 // a1: constructor
987 // a3: number of elements in properties array (untagged) 986 // a3: number of elements in properties array (untagged)
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1949 __ bind(&dont_adapt_arguments); 1948 __ bind(&dont_adapt_arguments);
1950 __ Jump(a3); 1949 __ Jump(a3);
1951 } 1950 }
1952 1951
1953 1952
1954 #undef __ 1953 #undef __
1955 1954
1956 } } // namespace v8::internal 1955 } } // namespace v8::internal
1957 1956
1958 #endif // V8_TARGET_ARCH_MIPS 1957 #endif // V8_TARGET_ARCH_MIPS
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