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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_ARM. | 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_ARM. |
6 #if defined(TARGET_ARCH_ARM) | 6 #if defined(TARGET_ARCH_ARM) |
7 | 7 |
8 #include "vm/intermediate_language.h" | 8 #include "vm/intermediate_language.h" |
9 | 9 |
10 #include "vm/dart_entry.h" | 10 #include "vm/dart_entry.h" |
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1312 Register field_reg = needs_field_temp_reg ? | 1312 Register field_reg = needs_field_temp_reg ? |
1313 locs()->temp(locs()->temp_count() - 1).reg() : kNoRegister; | 1313 locs()->temp(locs()->temp_count() - 1).reg() : kNoRegister; |
1314 | 1314 |
1315 Label ok, fail_label; | 1315 Label ok, fail_label; |
1316 | 1316 |
1317 Label* deopt = compiler->is_optimizing() ? | 1317 Label* deopt = compiler->is_optimizing() ? |
1318 compiler->AddDeoptStub(deopt_id(), kDeoptGuardField) : NULL; | 1318 compiler->AddDeoptStub(deopt_id(), kDeoptGuardField) : NULL; |
1319 | 1319 |
1320 Label* fail = (deopt != NULL) ? deopt : &fail_label; | 1320 Label* fail = (deopt != NULL) ? deopt : &fail_label; |
1321 | 1321 |
1322 const bool ok_is_fall_through = (deopt != NULL); | |
1323 | |
1324 if (!compiler->is_optimizing() || (field_cid == kIllegalCid)) { | 1322 if (!compiler->is_optimizing() || (field_cid == kIllegalCid)) { |
1325 if (!compiler->is_optimizing() && (field_reg == kNoRegister)) { | 1323 if (!compiler->is_optimizing() && (field_reg == kNoRegister)) { |
1326 // Currently we can't have different location summaries for optimized | 1324 // Currently we can't have different location summaries for optimized |
1327 // and non-optimized code. So instead we manually pick up a register | 1325 // and non-optimized code. So instead we manually pick up a register |
1328 // that is known to be free because we know how non-optimizing compiler | 1326 // that is known to be free because we know how non-optimizing compiler |
1329 // allocates registers. | 1327 // allocates registers. |
1330 field_reg = R2; | 1328 field_reg = R2; |
1331 ASSERT((field_reg != value_reg) && (field_reg != value_cid_reg)); | 1329 ASSERT((field_reg != value_reg) && (field_reg != value_cid_reg)); |
1332 } | 1330 } |
1333 | 1331 |
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1498 // Destroy value_cid_reg (safe because we are finished with it). | 1496 // Destroy value_cid_reg (safe because we are finished with it). |
1499 __ ldr(value_cid_reg, | 1497 __ ldr(value_cid_reg, |
1500 FieldAddress(value_reg, TypedData::length_offset())); | 1498 FieldAddress(value_reg, TypedData::length_offset())); |
1501 __ str(value_cid_reg, field_length_operand); | 1499 __ str(value_cid_reg, field_length_operand); |
1502 } else { | 1500 } else { |
1503 __ LoadImmediate(IP, Smi::RawValue(Field::kNoFixedLength)); | 1501 __ LoadImmediate(IP, Smi::RawValue(Field::kNoFixedLength)); |
1504 __ str(IP, field_length_operand); | 1502 __ str(IP, field_length_operand); |
1505 } | 1503 } |
1506 } | 1504 } |
1507 } | 1505 } |
1508 if (!ok_is_fall_through) { | |
1509 __ b(&ok); | |
1510 } | |
1511 | 1506 |
1512 if (deopt == NULL) { | 1507 if (deopt == NULL) { |
1513 ASSERT(!compiler->is_optimizing()); | 1508 ASSERT(!compiler->is_optimizing()); |
| 1509 __ b(&ok); |
1514 __ Bind(fail); | 1510 __ Bind(fail); |
1515 | 1511 |
1516 __ ldr(IP, FieldAddress(field_reg, Field::guarded_cid_offset())); | 1512 __ ldr(IP, FieldAddress(field_reg, Field::guarded_cid_offset())); |
1517 __ CompareImmediate(IP, kDynamicCid); | 1513 __ CompareImmediate(IP, kDynamicCid); |
1518 __ b(&ok, EQ); | 1514 __ b(&ok, EQ); |
1519 | 1515 |
1520 __ Push(field_reg); | 1516 __ Push(field_reg); |
1521 __ Push(value_reg); | 1517 __ Push(value_reg); |
1522 __ CallRuntime(kUpdateFieldCidRuntimeEntry, 2); | 1518 __ CallRuntime(kUpdateFieldCidRuntimeEntry, 2); |
1523 __ Drop(2); // Drop the field and the value. | 1519 __ Drop(2); // Drop the field and the value. |
1524 } | 1520 } |
1525 } else { | 1521 } else { |
1526 ASSERT(compiler->is_optimizing()); | 1522 ASSERT(compiler->is_optimizing()); |
1527 ASSERT(deopt != NULL); | 1523 ASSERT(deopt != NULL); |
1528 ASSERT(ok_is_fall_through); | |
1529 // Field guard class has been initialized and is known. | 1524 // Field guard class has been initialized and is known. |
1530 if (field_reg != kNoRegister) { | 1525 if (field_reg != kNoRegister) { |
1531 __ LoadObject(field_reg, Field::ZoneHandle(field().raw())); | 1526 __ LoadObject(field_reg, Field::ZoneHandle(field().raw())); |
1532 } | 1527 } |
1533 if (value_cid == kDynamicCid) { | 1528 if (value_cid == kDynamicCid) { |
1534 // Field's guarded class id is fixed by value's class id is not known. | 1529 // Field's guarded class id is fixed by value's class id is not known. |
1535 __ tst(value_reg, ShifterOperand(kSmiTagMask)); | 1530 __ tst(value_reg, ShifterOperand(kSmiTagMask)); |
1536 | 1531 |
1537 if (field_cid != kSmiCid) { | 1532 if (field_cid != kSmiCid) { |
1538 __ b(fail, EQ); | 1533 __ b(fail, EQ); |
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4839 compiler->GenerateCall(token_pos(), | 4834 compiler->GenerateCall(token_pos(), |
4840 &label, | 4835 &label, |
4841 PcDescriptors::kOther, | 4836 PcDescriptors::kOther, |
4842 locs()); | 4837 locs()); |
4843 __ Drop(2); // Discard type arguments and receiver. | 4838 __ Drop(2); // Discard type arguments and receiver. |
4844 } | 4839 } |
4845 | 4840 |
4846 } // namespace dart | 4841 } // namespace dart |
4847 | 4842 |
4848 #endif // defined TARGET_ARCH_ARM | 4843 #endif // defined TARGET_ARCH_ARM |
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