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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
(...skipping 202 matching lines...) Expand 10 before | Expand all | Expand 10 after
213 __ pop(rdi); 213 __ pop(rdi);
214 __ pop(rax); 214 __ pop(rax);
215 215
216 __ bind(&allocate); 216 __ bind(&allocate);
217 } 217 }
218 218
219 // Now allocate the JSObject on the heap. 219 // Now allocate the JSObject on the heap.
220 __ movzxbq(rdi, FieldOperand(rax, Map::kInstanceSizeOffset)); 220 __ movzxbq(rdi, FieldOperand(rax, Map::kInstanceSizeOffset));
221 __ shl(rdi, Immediate(kPointerSizeLog2)); 221 __ shl(rdi, Immediate(kPointerSizeLog2));
222 // rdi: size of new object 222 // rdi: size of new object
223 __ AllocateInNewSpace(rdi, 223 __ Allocate(rdi,
224 rbx, 224 rbx,
225 rdi, 225 rdi,
226 no_reg, 226 no_reg,
227 &rt_call, 227 &rt_call,
228 NO_ALLOCATION_FLAGS); 228 NO_ALLOCATION_FLAGS);
229 // Allocated the JSObject, now initialize the fields. 229 // Allocated the JSObject, now initialize the fields.
230 // rax: initial map 230 // rax: initial map
231 // rbx: JSObject (not HeapObject tagged - the actual address). 231 // rbx: JSObject (not HeapObject tagged - the actual address).
232 // rdi: start of next object 232 // rdi: start of next object
233 __ movq(Operand(rbx, JSObject::kMapOffset), rax); 233 __ movq(Operand(rbx, JSObject::kMapOffset), rax);
234 __ LoadRoot(rcx, Heap::kEmptyFixedArrayRootIndex); 234 __ LoadRoot(rcx, Heap::kEmptyFixedArrayRootIndex);
235 __ movq(Operand(rbx, JSObject::kPropertiesOffset), rcx); 235 __ movq(Operand(rbx, JSObject::kPropertiesOffset), rcx);
236 __ movq(Operand(rbx, JSObject::kElementsOffset), rcx); 236 __ movq(Operand(rbx, JSObject::kElementsOffset), rcx);
237 // Set extra fields in the newly allocated object. 237 // Set extra fields in the newly allocated object.
238 // rax: initial map 238 // rax: initial map
(...skipping 41 matching lines...) Expand 10 before | Expand all | Expand 10 after
280 __ subq(rdx, rcx); 280 __ subq(rdx, rcx);
281 // Done if no extra properties are to be allocated. 281 // Done if no extra properties are to be allocated.
282 __ j(zero, &allocated); 282 __ j(zero, &allocated);
283 __ Assert(positive, "Property allocation count failed."); 283 __ Assert(positive, "Property allocation count failed.");
284 284
285 // Scale the number of elements by pointer size and add the header for 285 // Scale the number of elements by pointer size and add the header for
286 // FixedArrays to the start of the next object calculation from above. 286 // FixedArrays to the start of the next object calculation from above.
287 // rbx: JSObject 287 // rbx: JSObject
288 // rdi: start of next object (will be start of FixedArray) 288 // rdi: start of next object (will be start of FixedArray)
289 // rdx: number of elements in properties array 289 // rdx: number of elements in properties array
290 __ AllocateInNewSpace(FixedArray::kHeaderSize, 290 __ Allocate(FixedArray::kHeaderSize,
291 times_pointer_size, 291 times_pointer_size,
292 rdx, 292 rdx,
293 rdi, 293 rdi,
294 rax, 294 rax,
295 no_reg, 295 no_reg,
296 &undo_allocation, 296 &undo_allocation,
297 RESULT_CONTAINS_TOP); 297 RESULT_CONTAINS_TOP);
298 298
299 // Initialize the FixedArray. 299 // Initialize the FixedArray.
300 // rbx: JSObject 300 // rbx: JSObject
301 // rdi: FixedArray 301 // rdi: FixedArray
302 // rdx: number of elements 302 // rdx: number of elements
303 // rax: start of next object 303 // rax: start of next object
304 __ LoadRoot(rcx, Heap::kFixedArrayMapRootIndex); 304 __ LoadRoot(rcx, Heap::kFixedArrayMapRootIndex);
305 __ movq(Operand(rdi, HeapObject::kMapOffset), rcx); // setup the map 305 __ movq(Operand(rdi, HeapObject::kMapOffset), rcx); // setup the map
306 __ Integer32ToSmi(rdx, rdx); 306 __ Integer32ToSmi(rdx, rdx);
307 __ movq(Operand(rdi, FixedArray::kLengthOffset), rdx); // and length 307 __ movq(Operand(rdi, FixedArray::kLengthOffset), rdx); // and length
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1205 1205
1206 if (FLAG_debug_code) { // Assert that array size is not zero. 1206 if (FLAG_debug_code) { // Assert that array size is not zero.
1207 __ testq(array_size, array_size); 1207 __ testq(array_size, array_size);
1208 __ Assert(not_zero, "array size is unexpectedly 0"); 1208 __ Assert(not_zero, "array size is unexpectedly 0");
1209 } 1209 }
1210 1210
1211 // Allocate the JSArray object together with space for a FixedArray with the 1211 // Allocate the JSArray object together with space for a FixedArray with the
1212 // requested elements. 1212 // requested elements.
1213 SmiIndex index = 1213 SmiIndex index =
1214 masm->SmiToIndex(kScratchRegister, array_size, kPointerSizeLog2); 1214 masm->SmiToIndex(kScratchRegister, array_size, kPointerSizeLog2);
1215 __ AllocateInNewSpace(JSArray::kSize + FixedArray::kHeaderSize, 1215 __ Allocate(JSArray::kSize + FixedArray::kHeaderSize,
1216 index.scale, 1216 index.scale,
1217 index.reg, 1217 index.reg,
1218 result, 1218 result,
1219 elements_array_end, 1219 elements_array_end,
1220 scratch, 1220 scratch,
1221 gc_required, 1221 gc_required,
1222 TAG_OBJECT); 1222 TAG_OBJECT);
1223 1223
1224 // Allocated the JSArray. Now initialize the fields except for the elements 1224 // Allocated the JSArray. Now initialize the fields except for the elements
1225 // array. 1225 // array.
1226 // result: JSObject 1226 // result: JSObject
1227 // elements_array: initial map 1227 // elements_array: initial map
1228 // elements_array_end: start of next object 1228 // elements_array_end: start of next object
1229 // array_size: size of array (smi) 1229 // array_size: size of array (smi)
1230 Factory* factory = masm->isolate()->factory(); 1230 Factory* factory = masm->isolate()->factory();
1231 __ movq(FieldOperand(result, JSObject::kMapOffset), elements_array); 1231 __ movq(FieldOperand(result, JSObject::kMapOffset), elements_array);
1232 __ Move(elements_array, factory->empty_fixed_array()); 1232 __ Move(elements_array, factory->empty_fixed_array());
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1893 Deoptimizer::EntryGenerator generator(masm, Deoptimizer::OSR); 1893 Deoptimizer::EntryGenerator generator(masm, Deoptimizer::OSR);
1894 generator.Generate(); 1894 generator.Generate();
1895 } 1895 }
1896 1896
1897 1897
1898 #undef __ 1898 #undef __
1899 1899
1900 } } // namespace v8::internal 1900 } } // namespace v8::internal
1901 1901
1902 #endif // V8_TARGET_ARCH_X64 1902 #endif // V8_TARGET_ARCH_X64
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