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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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| 149 // ----------- S t a t e ------------- | 149 // ----------- S t a t e ------------- |
| 150 // -- r0 : value | 150 // -- r0 : value |
| 151 // -- r1 : key | 151 // -- r1 : key |
| 152 // -- r2 : receiver | 152 // -- r2 : receiver |
| 153 // -- lr : return address | 153 // -- lr : return address |
| 154 // -- r3 : target map, scratch for subsequent call | 154 // -- r3 : target map, scratch for subsequent call |
| 155 // -- r4 : scratch (elements) | 155 // -- r4 : scratch (elements) |
| 156 // ----------------------------------- | 156 // ----------------------------------- |
| 157 if (mode == TRACK_ALLOCATION_SITE) { | 157 if (mode == TRACK_ALLOCATION_SITE) { |
| 158 ASSERT(allocation_site_info_found != NULL); | 158 ASSERT(allocation_site_info_found != NULL); |
| 159 masm->TestJSArrayForAllocationSiteInfo(r2, r4, | 159 __ TestJSArrayForAllocationSiteInfo(r2, r4); |
| 160 allocation_site_info_found); | 160 __ b(eq, allocation_site_info_found); |
| 161 } | 161 } |
| 162 | 162 |
| 163 // Set transitioned map. | 163 // Set transitioned map. |
| 164 __ str(r3, FieldMemOperand(r2, HeapObject::kMapOffset)); | 164 __ str(r3, FieldMemOperand(r2, HeapObject::kMapOffset)); |
| 165 __ RecordWriteField(r2, | 165 __ RecordWriteField(r2, |
| 166 HeapObject::kMapOffset, | 166 HeapObject::kMapOffset, |
| 167 r3, | 167 r3, |
| 168 r9, | 168 r9, |
| 169 kLRHasNotBeenSaved, | 169 kLRHasNotBeenSaved, |
| 170 kDontSaveFPRegs, | 170 kDontSaveFPRegs, |
| 171 EMIT_REMEMBERED_SET, | 171 EMIT_REMEMBERED_SET, |
| 172 OMIT_SMI_CHECK); | 172 OMIT_SMI_CHECK); |
| 173 } | 173 } |
| 174 | 174 |
| 175 | 175 |
| 176 void ElementsTransitionGenerator::GenerateSmiToDouble( | 176 void ElementsTransitionGenerator::GenerateSmiToDouble( |
| 177 MacroAssembler* masm, AllocationSiteMode mode, Label* fail) { | 177 MacroAssembler* masm, AllocationSiteMode mode, Label* fail) { |
| 178 // ----------- S t a t e ------------- | 178 // ----------- S t a t e ------------- |
| 179 // -- r0 : value | 179 // -- r0 : value |
| 180 // -- r1 : key | 180 // -- r1 : key |
| 181 // -- r2 : receiver | 181 // -- r2 : receiver |
| 182 // -- lr : return address | 182 // -- lr : return address |
| 183 // -- r3 : target map, scratch for subsequent call | 183 // -- r3 : target map, scratch for subsequent call |
| 184 // -- r4 : scratch (elements) | 184 // -- r4 : scratch (elements) |
| 185 // ----------------------------------- | 185 // ----------------------------------- |
| 186 Label loop, entry, convert_hole, gc_required, only_change_map, done; | 186 Label loop, entry, convert_hole, gc_required, only_change_map, done; |
| 187 bool vfp2_supported = CpuFeatures::IsSupported(VFP2); | 187 bool vfp2_supported = CpuFeatures::IsSupported(VFP2); |
| 188 | 188 |
| 189 if (mode == TRACK_ALLOCATION_SITE) { | 189 if (mode == TRACK_ALLOCATION_SITE) { |
| 190 masm->TestJSArrayForAllocationSiteInfo(r2, r4, fail); | 190 __ TestJSArrayForAllocationSiteInfo(r2, r4); |
| 191 __ b(eq, fail); |
| 191 } | 192 } |
| 192 | 193 |
| 193 // Check for empty arrays, which only require a map transition and no changes | 194 // Check for empty arrays, which only require a map transition and no changes |
| 194 // to the backing store. | 195 // to the backing store. |
| 195 __ ldr(r4, FieldMemOperand(r2, JSObject::kElementsOffset)); | 196 __ ldr(r4, FieldMemOperand(r2, JSObject::kElementsOffset)); |
| 196 __ CompareRoot(r4, Heap::kEmptyFixedArrayRootIndex); | 197 __ CompareRoot(r4, Heap::kEmptyFixedArrayRootIndex); |
| 197 __ b(eq, &only_change_map); | 198 __ b(eq, &only_change_map); |
| 198 | 199 |
| 199 __ push(lr); | 200 __ push(lr); |
| 200 __ ldr(r5, FieldMemOperand(r4, FixedArray::kLengthOffset)); | 201 __ ldr(r5, FieldMemOperand(r4, FixedArray::kLengthOffset)); |
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| 320 // -- r0 : value | 321 // -- r0 : value |
| 321 // -- r1 : key | 322 // -- r1 : key |
| 322 // -- r2 : receiver | 323 // -- r2 : receiver |
| 323 // -- lr : return address | 324 // -- lr : return address |
| 324 // -- r3 : target map, scratch for subsequent call | 325 // -- r3 : target map, scratch for subsequent call |
| 325 // -- r4 : scratch (elements) | 326 // -- r4 : scratch (elements) |
| 326 // ----------------------------------- | 327 // ----------------------------------- |
| 327 Label entry, loop, convert_hole, gc_required, only_change_map; | 328 Label entry, loop, convert_hole, gc_required, only_change_map; |
| 328 | 329 |
| 329 if (mode == TRACK_ALLOCATION_SITE) { | 330 if (mode == TRACK_ALLOCATION_SITE) { |
| 330 masm->TestJSArrayForAllocationSiteInfo(r2, r4, fail); | 331 __ TestJSArrayForAllocationSiteInfo(r2, r4); |
| 332 __ b(eq, fail); |
| 331 } | 333 } |
| 332 | 334 |
| 333 // Check for empty arrays, which only require a map transition and no changes | 335 // Check for empty arrays, which only require a map transition and no changes |
| 334 // to the backing store. | 336 // to the backing store. |
| 335 __ ldr(r4, FieldMemOperand(r2, JSObject::kElementsOffset)); | 337 __ ldr(r4, FieldMemOperand(r2, JSObject::kElementsOffset)); |
| 336 __ CompareRoot(r4, Heap::kEmptyFixedArrayRootIndex); | 338 __ CompareRoot(r4, Heap::kEmptyFixedArrayRootIndex); |
| 337 __ b(eq, &only_change_map); | 339 __ b(eq, &only_change_map); |
| 338 | 340 |
| 339 __ push(lr); | 341 __ push(lr); |
| 340 __ Push(r3, r2, r1, r0); | 342 __ Push(r3, r2, r1, r0); |
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| 696 patcher.masm()->add(r0, pc, Operand(-8)); | 698 patcher.masm()->add(r0, pc, Operand(-8)); |
| 697 patcher.masm()->ldr(pc, MemOperand(pc, -4)); | 699 patcher.masm()->ldr(pc, MemOperand(pc, -4)); |
| 698 patcher.masm()->dd(reinterpret_cast<uint32_t>(stub->instruction_start())); | 700 patcher.masm()->dd(reinterpret_cast<uint32_t>(stub->instruction_start())); |
| 699 } | 701 } |
| 700 } | 702 } |
| 701 | 703 |
| 702 | 704 |
| 703 } } // namespace v8::internal | 705 } } // namespace v8::internal |
| 704 | 706 |
| 705 #endif // V8_TARGET_ARCH_ARM | 707 #endif // V8_TARGET_ARCH_ARM |
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