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| 1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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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| 128 ASSERT(masm->has_frame()); | 128 ASSERT(masm->has_frame()); |
| 129 masm->set_has_frame(false); | 129 masm->set_has_frame(false); |
| 130 } | 130 } |
| 131 | 131 |
| 132 | 132 |
| 133 // ------------------------------------------------------------------------- | 133 // ------------------------------------------------------------------------- |
| 134 // Code generators | 134 // Code generators |
| 135 | 135 |
| 136 void ElementsTransitionGenerator::GenerateMapChangeElementsTransition( | 136 void ElementsTransitionGenerator::GenerateMapChangeElementsTransition( |
| 137 MacroAssembler* masm, AllocationSiteMode mode, | 137 MacroAssembler* masm, AllocationSiteMode mode, |
| 138 Label* allocation_site_info_found) { | 138 Label* allocation_memento_found) { |
| 139 // ----------- S t a t e ------------- | 139 // ----------- S t a t e ------------- |
| 140 // -- x2 : receiver | 140 // -- x2 : receiver |
| 141 // -- x3 : target map | 141 // -- x3 : target map |
| 142 // ----------------------------------- | 142 // ----------------------------------- |
| 143 Register receiver = x2; | 143 Register receiver = x2; |
| 144 Register map = x3; | 144 Register map = x3; |
| 145 | 145 |
| 146 if (mode == TRACK_ALLOCATION_SITE) { | 146 if (mode == TRACK_ALLOCATION_SITE) { |
| 147 ASSERT(allocation_site_info_found != NULL); | 147 ASSERT(allocation_memento_found != NULL); |
| 148 __ TestJSArrayForAllocationSiteInfo(receiver, x10, x11); | 148 __ TestJSArrayForAllocationMemento(receiver, x10, x11); |
| 149 __ B(eq, allocation_site_info_found); | 149 __ B(eq, allocation_memento_found); |
| 150 } | 150 } |
| 151 | 151 |
| 152 // Set transitioned map. | 152 // Set transitioned map. |
| 153 __ Str(map, FieldMemOperand(receiver, HeapObject::kMapOffset)); | 153 __ Str(map, FieldMemOperand(receiver, HeapObject::kMapOffset)); |
| 154 __ RecordWriteField(receiver, | 154 __ RecordWriteField(receiver, |
| 155 HeapObject::kMapOffset, | 155 HeapObject::kMapOffset, |
| 156 map, | 156 map, |
| 157 x10, | 157 x10, |
| 158 kLRHasNotBeenSaved, | 158 kLRHasNotBeenSaved, |
| 159 kDontSaveFPRegs, | 159 kDontSaveFPRegs, |
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| 171 // -- x1 : key | 171 // -- x1 : key |
| 172 // -- x2 : receiver | 172 // -- x2 : receiver |
| 173 // -- x3 : target map, scratch for subsequent call | 173 // -- x3 : target map, scratch for subsequent call |
| 174 // ----------------------------------- | 174 // ----------------------------------- |
| 175 Register receiver = x2; | 175 Register receiver = x2; |
| 176 Register target_map = x3; | 176 Register target_map = x3; |
| 177 | 177 |
| 178 Label gc_required, only_change_map; | 178 Label gc_required, only_change_map; |
| 179 | 179 |
| 180 if (mode == TRACK_ALLOCATION_SITE) { | 180 if (mode == TRACK_ALLOCATION_SITE) { |
| 181 __ TestJSArrayForAllocationSiteInfo(receiver, x10, x11); | 181 __ TestJSArrayForAllocationMemento(receiver, x10, x11); |
| 182 __ B(eq, fail); | 182 __ B(eq, fail); |
| 183 } | 183 } |
| 184 | 184 |
| 185 // Check for empty arrays, which only require a map transition and no changes | 185 // Check for empty arrays, which only require a map transition and no changes |
| 186 // to the backing store. | 186 // to the backing store. |
| 187 Register elements = x4; | 187 Register elements = x4; |
| 188 __ Ldr(elements, FieldMemOperand(receiver, JSObject::kElementsOffset)); | 188 __ Ldr(elements, FieldMemOperand(receiver, JSObject::kElementsOffset)); |
| 189 __ JumpIfRoot(elements, Heap::kEmptyFixedArrayRootIndex, &only_change_map); | 189 __ JumpIfRoot(elements, Heap::kEmptyFixedArrayRootIndex, &only_change_map); |
| 190 | 190 |
| 191 __ Push(lr); | 191 __ Push(lr); |
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| 277 // -- lr : return address | 277 // -- lr : return address |
| 278 // -- x3 : target map, scratch for subsequent call | 278 // -- x3 : target map, scratch for subsequent call |
| 279 // -- x4 : scratch (elements) | 279 // -- x4 : scratch (elements) |
| 280 // ----------------------------------- | 280 // ----------------------------------- |
| 281 Register value = x0; | 281 Register value = x0; |
| 282 Register key = x1; | 282 Register key = x1; |
| 283 Register receiver = x2; | 283 Register receiver = x2; |
| 284 Register target_map = x3; | 284 Register target_map = x3; |
| 285 | 285 |
| 286 if (mode == TRACK_ALLOCATION_SITE) { | 286 if (mode == TRACK_ALLOCATION_SITE) { |
| 287 __ TestJSArrayForAllocationSiteInfo(receiver, x10, x11); | 287 __ TestJSArrayForAllocationMemento(receiver, x10, x11); |
| 288 __ B(eq, fail); | 288 __ B(eq, fail); |
| 289 } | 289 } |
| 290 | 290 |
| 291 // Check for empty arrays, which only require a map transition and no changes | 291 // Check for empty arrays, which only require a map transition and no changes |
| 292 // to the backing store. | 292 // to the backing store. |
| 293 Label only_change_map; | 293 Label only_change_map; |
| 294 Register elements = x4; | 294 Register elements = x4; |
| 295 __ Ldr(elements, FieldMemOperand(receiver, JSObject::kElementsOffset)); | 295 __ Ldr(elements, FieldMemOperand(receiver, JSObject::kElementsOffset)); |
| 296 __ JumpIfRoot(elements, Heap::kEmptyFixedArrayRootIndex, &only_change_map); | 296 __ JumpIfRoot(elements, Heap::kEmptyFixedArrayRootIndex, &only_change_map); |
| 297 | 297 |
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| 615 __ Fmul(result, double_temp3, double_temp1); | 615 __ Fmul(result, double_temp3, double_temp1); |
| 616 | 616 |
| 617 __ Bind(&done); | 617 __ Bind(&done); |
| 618 } | 618 } |
| 619 | 619 |
| 620 #undef __ | 620 #undef __ |
| 621 | 621 |
| 622 } } // namespace v8::internal | 622 } } // namespace v8::internal |
| 623 | 623 |
| 624 #endif // V8_TARGET_ARCH_A64 | 624 #endif // V8_TARGET_ARCH_A64 |
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