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Issue 12440041: 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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214 } 214 }
215 215
216 // Allocate the JSArray object together with space for a FixedArray with the 216 // Allocate the JSArray object together with space for a FixedArray with the
217 // requested number of elements. 217 // requested number of elements.
218 STATIC_ASSERT(kSmiTagSize == 1 && kSmiTag == 0); 218 STATIC_ASSERT(kSmiTagSize == 1 && kSmiTag == 0);
219 __ mov(elements_array_end, 219 __ mov(elements_array_end,
220 Operand((JSArray::kSize + FixedArray::kHeaderSize) / kPointerSize)); 220 Operand((JSArray::kSize + FixedArray::kHeaderSize) / kPointerSize));
221 __ add(elements_array_end, 221 __ add(elements_array_end,
222 elements_array_end, 222 elements_array_end,
223 Operand(array_size, ASR, kSmiTagSize)); 223 Operand(array_size, ASR, kSmiTagSize));
224 __ AllocateInNewSpace( 224 __ Allocate(elements_array_end,
225 elements_array_end, 225 result,
226 result, 226 scratch1,
227 scratch1, 227 scratch2,
228 scratch2, 228 gc_required,
229 gc_required, 229 static_cast<AllocationFlags>(TAG_OBJECT | SIZE_IN_WORDS));
230 static_cast<AllocationFlags>(TAG_OBJECT | SIZE_IN_WORDS));
231 230
232 // Allocated the JSArray. Now initialize the fields except for the elements 231 // Allocated the JSArray. Now initialize the fields except for the elements
233 // array. 232 // array.
234 // result: JSObject 233 // result: JSObject
235 // elements_array_storage: initial map 234 // elements_array_storage: initial map
236 // array_size: size of array (smi) 235 // array_size: size of array (smi)
237 __ str(elements_array_storage, FieldMemOperand(result, JSObject::kMapOffset)); 236 __ str(elements_array_storage, FieldMemOperand(result, JSObject::kMapOffset));
238 __ LoadRoot(elements_array_storage, Heap::kEmptyFixedArrayRootIndex); 237 __ LoadRoot(elements_array_storage, Heap::kEmptyFixedArrayRootIndex);
239 __ str(elements_array_storage, 238 __ str(elements_array_storage,
240 FieldMemOperand(result, JSArray::kPropertiesOffset)); 239 FieldMemOperand(result, JSArray::kPropertiesOffset));
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867 __ pop(r2); 866 __ pop(r2);
868 __ pop(r1); 867 __ pop(r1);
869 868
870 __ bind(&allocate); 869 __ bind(&allocate);
871 } 870 }
872 871
873 // Now allocate the JSObject on the heap. 872 // Now allocate the JSObject on the heap.
874 // r1: constructor function 873 // r1: constructor function
875 // r2: initial map 874 // r2: initial map
876 __ ldrb(r3, FieldMemOperand(r2, Map::kInstanceSizeOffset)); 875 __ ldrb(r3, FieldMemOperand(r2, Map::kInstanceSizeOffset));
877 __ AllocateInNewSpace(r3, r4, r5, r6, &rt_call, SIZE_IN_WORDS); 876 __ Allocate(r3, r4, r5, r6, &rt_call, SIZE_IN_WORDS);
878 877
879 // Allocated the JSObject, now initialize the fields. Map is set to 878 // Allocated the JSObject, now initialize the fields. Map is set to
880 // initial map and properties and elements are set to empty fixed array. 879 // initial map and properties and elements are set to empty fixed array.
881 // r1: constructor function 880 // r1: constructor function
882 // r2: initial map 881 // r2: initial map
883 // r3: object size 882 // r3: object size
884 // r4: JSObject (not tagged) 883 // r4: JSObject (not tagged)
885 __ LoadRoot(r6, Heap::kEmptyFixedArrayRootIndex); 884 __ LoadRoot(r6, Heap::kEmptyFixedArrayRootIndex);
886 __ mov(r5, r4); 885 __ mov(r5, r4);
887 ASSERT_EQ(0 * kPointerSize, JSObject::kMapOffset); 886 ASSERT_EQ(0 * kPointerSize, JSObject::kMapOffset);
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942 __ b(eq, &allocated); 941 __ b(eq, &allocated);
943 __ Assert(pl, "Property allocation count failed."); 942 __ Assert(pl, "Property allocation count failed.");
944 943
945 // Scale the number of elements by pointer size and add the header for 944 // Scale the number of elements by pointer size and add the header for
946 // FixedArrays to the start of the next object calculation from above. 945 // FixedArrays to the start of the next object calculation from above.
947 // r1: constructor 946 // r1: constructor
948 // r3: number of elements in properties array 947 // r3: number of elements in properties array
949 // r4: JSObject 948 // r4: JSObject
950 // r5: start of next object 949 // r5: start of next object
951 __ add(r0, r3, Operand(FixedArray::kHeaderSize / kPointerSize)); 950 __ add(r0, r3, Operand(FixedArray::kHeaderSize / kPointerSize));
952 __ AllocateInNewSpace( 951 __ Allocate(
953 r0, 952 r0,
954 r5, 953 r5,
955 r6, 954 r6,
956 r2, 955 r2,
957 &undo_allocation, 956 &undo_allocation,
958 static_cast<AllocationFlags>(RESULT_CONTAINS_TOP | SIZE_IN_WORDS)); 957 static_cast<AllocationFlags>(RESULT_CONTAINS_TOP | SIZE_IN_WORDS));
959 958
960 // Initialize the FixedArray. 959 // Initialize the FixedArray.
961 // r1: constructor 960 // r1: constructor
962 // r3: number of elements in properties array 961 // r3: number of elements in properties array
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1906 __ bind(&dont_adapt_arguments); 1905 __ bind(&dont_adapt_arguments);
1907 __ Jump(r3); 1906 __ Jump(r3);
1908 } 1907 }
1909 1908
1910 1909
1911 #undef __ 1910 #undef __
1912 1911
1913 } } // namespace v8::internal 1912 } } // namespace v8::internal
1914 1913
1915 #endif // V8_TARGET_ARCH_ARM 1914 #endif // V8_TARGET_ARCH_ARM
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