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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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1293 Register field_reg = needs_field_temp_reg ? | 1293 Register field_reg = needs_field_temp_reg ? |
1294 locs()->temp(locs()->temp_count() - 1).reg() : kNoRegister; | 1294 locs()->temp(locs()->temp_count() - 1).reg() : kNoRegister; |
1295 | 1295 |
1296 Label ok, fail_label; | 1296 Label ok, fail_label; |
1297 | 1297 |
1298 Label* deopt = compiler->is_optimizing() ? | 1298 Label* deopt = compiler->is_optimizing() ? |
1299 compiler->AddDeoptStub(deopt_id(), kDeoptGuardField) : NULL; | 1299 compiler->AddDeoptStub(deopt_id(), kDeoptGuardField) : NULL; |
1300 | 1300 |
1301 Label* fail = (deopt != NULL) ? deopt : &fail_label; | 1301 Label* fail = (deopt != NULL) ? deopt : &fail_label; |
1302 | 1302 |
1303 const bool ok_is_fall_through = (deopt != NULL); | |
1304 | |
1305 if (!compiler->is_optimizing() || (field_cid == kIllegalCid)) { | 1303 if (!compiler->is_optimizing() || (field_cid == kIllegalCid)) { |
1306 if (!compiler->is_optimizing() && (field_reg == kNoRegister)) { | 1304 if (!compiler->is_optimizing() && (field_reg == kNoRegister)) { |
1307 // Currently we can't have different location summaries for optimized | 1305 // Currently we can't have different location summaries for optimized |
1308 // and non-optimized code. So instead we manually pick up a register | 1306 // and non-optimized code. So instead we manually pick up a register |
1309 // that is known to be free because we know how non-optimizing compiler | 1307 // that is known to be free because we know how non-optimizing compiler |
1310 // allocates registers. | 1308 // allocates registers. |
1311 field_reg = R2; | 1309 field_reg = R2; |
1312 ASSERT((field_reg != value_reg) && (field_reg != value_cid_reg)); | 1310 ASSERT((field_reg != value_reg) && (field_reg != value_cid_reg)); |
1313 } | 1311 } |
1314 | 1312 |
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1479 // Destroy value_cid_reg (safe because we are finished with it). | 1477 // Destroy value_cid_reg (safe because we are finished with it). |
1480 __ ldr(value_cid_reg, | 1478 __ ldr(value_cid_reg, |
1481 FieldAddress(value_reg, TypedData::length_offset())); | 1479 FieldAddress(value_reg, TypedData::length_offset())); |
1482 __ str(value_cid_reg, field_length_operand); | 1480 __ str(value_cid_reg, field_length_operand); |
1483 } else { | 1481 } else { |
1484 __ LoadImmediate(IP, Smi::RawValue(Field::kNoFixedLength)); | 1482 __ LoadImmediate(IP, Smi::RawValue(Field::kNoFixedLength)); |
1485 __ str(IP, field_length_operand); | 1483 __ str(IP, field_length_operand); |
1486 } | 1484 } |
1487 } | 1485 } |
1488 } | 1486 } |
1489 if (!ok_is_fall_through) { | |
1490 __ b(&ok); | |
1491 } | |
1492 | 1487 |
1493 if (deopt == NULL) { | 1488 if (deopt == NULL) { |
1494 ASSERT(!compiler->is_optimizing()); | 1489 ASSERT(!compiler->is_optimizing()); |
| 1490 __ b(&ok); |
1495 __ Bind(fail); | 1491 __ Bind(fail); |
1496 | 1492 |
1497 __ ldr(IP, FieldAddress(field_reg, Field::guarded_cid_offset())); | 1493 __ ldr(IP, FieldAddress(field_reg, Field::guarded_cid_offset())); |
1498 __ CompareImmediate(IP, kDynamicCid); | 1494 __ CompareImmediate(IP, kDynamicCid); |
1499 __ b(&ok, EQ); | 1495 __ b(&ok, EQ); |
1500 | 1496 |
1501 __ Push(field_reg); | 1497 __ Push(field_reg); |
1502 __ Push(value_reg); | 1498 __ Push(value_reg); |
1503 __ CallRuntime(kUpdateFieldCidRuntimeEntry, 2); | 1499 __ CallRuntime(kUpdateFieldCidRuntimeEntry, 2); |
1504 __ Drop(2); // Drop the field and the value. | 1500 __ Drop(2); // Drop the field and the value. |
1505 } | 1501 } |
1506 } else { | 1502 } else { |
1507 ASSERT(compiler->is_optimizing()); | 1503 ASSERT(compiler->is_optimizing()); |
1508 ASSERT(deopt != NULL); | 1504 ASSERT(deopt != NULL); |
1509 ASSERT(ok_is_fall_through); | |
1510 // Field guard class has been initialized and is known. | 1505 // Field guard class has been initialized and is known. |
1511 if (field_reg != kNoRegister) { | 1506 if (field_reg != kNoRegister) { |
1512 __ LoadObject(field_reg, Field::ZoneHandle(field().raw())); | 1507 __ LoadObject(field_reg, Field::ZoneHandle(field().raw())); |
1513 } | 1508 } |
1514 if (value_cid == kDynamicCid) { | 1509 if (value_cid == kDynamicCid) { |
1515 // Field's guarded class id is fixed by value's class id is not known. | 1510 // Field's guarded class id is fixed by value's class id is not known. |
1516 __ tst(value_reg, ShifterOperand(kSmiTagMask)); | 1511 __ tst(value_reg, ShifterOperand(kSmiTagMask)); |
1517 | 1512 |
1518 if (field_cid != kSmiCid) { | 1513 if (field_cid != kSmiCid) { |
1519 __ b(fail, EQ); | 1514 __ b(fail, EQ); |
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4820 compiler->GenerateCall(token_pos(), | 4815 compiler->GenerateCall(token_pos(), |
4821 &label, | 4816 &label, |
4822 PcDescriptors::kOther, | 4817 PcDescriptors::kOther, |
4823 locs()); | 4818 locs()); |
4824 __ Drop(2); // Discard type arguments and receiver. | 4819 __ Drop(2); // Discard type arguments and receiver. |
4825 } | 4820 } |
4826 | 4821 |
4827 } // namespace dart | 4822 } // namespace dart |
4828 | 4823 |
4829 #endif // defined TARGET_ARCH_ARM | 4824 #endif // defined TARGET_ARCH_ARM |
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