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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_IA32. | 5 #include "vm/globals.h" // Needed here to get TARGET_ARCH_IA32. |
6 #if defined(TARGET_ARCH_IA32) | 6 #if defined(TARGET_ARCH_IA32) |
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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1282 Register field_reg = needs_field_temp_reg ? | 1282 Register field_reg = needs_field_temp_reg ? |
1283 locs()->temp(locs()->temp_count() - 1).reg() : kNoRegister; | 1283 locs()->temp(locs()->temp_count() - 1).reg() : kNoRegister; |
1284 | 1284 |
1285 Label ok, fail_label; | 1285 Label ok, fail_label; |
1286 | 1286 |
1287 Label* deopt = compiler->is_optimizing() ? | 1287 Label* deopt = compiler->is_optimizing() ? |
1288 compiler->AddDeoptStub(deopt_id(), kDeoptGuardField) : NULL; | 1288 compiler->AddDeoptStub(deopt_id(), kDeoptGuardField) : NULL; |
1289 | 1289 |
1290 Label* fail = (deopt != NULL) ? deopt : &fail_label; | 1290 Label* fail = (deopt != NULL) ? deopt : &fail_label; |
1291 | 1291 |
1292 const bool ok_is_fall_through = (deopt != NULL); | |
1293 | |
1294 if (!compiler->is_optimizing() || (field_cid == kIllegalCid)) { | 1292 if (!compiler->is_optimizing() || (field_cid == kIllegalCid)) { |
1295 if (!compiler->is_optimizing() && (field_reg == kNoRegister)) { | 1293 if (!compiler->is_optimizing() && (field_reg == kNoRegister)) { |
1296 // Currently we can't have different location summaries for optimized | 1294 // Currently we can't have different location summaries for optimized |
1297 // and non-optimized code. So instead we manually pick up a register | 1295 // and non-optimized code. So instead we manually pick up a register |
1298 // that is known to be free because we know how non-optimizing compiler | 1296 // that is known to be free because we know how non-optimizing compiler |
1299 // allocates registers. | 1297 // allocates registers. |
1300 field_reg = EBX; | 1298 field_reg = EBX; |
1301 ASSERT((field_reg != value_reg) && (field_reg != value_cid_reg)); | 1299 ASSERT((field_reg != value_reg) && (field_reg != value_cid_reg)); |
1302 } | 1300 } |
1303 | 1301 |
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1484 __ movl(value_cid_reg, | 1482 __ movl(value_cid_reg, |
1485 FieldAddress(value_reg, TypedData::length_offset())); | 1483 FieldAddress(value_reg, TypedData::length_offset())); |
1486 __ movl(field_length_operand, value_cid_reg); | 1484 __ movl(field_length_operand, value_cid_reg); |
1487 } else { | 1485 } else { |
1488 __ movl(field_length_operand, | 1486 __ movl(field_length_operand, |
1489 Immediate(Smi::RawValue(Field::kNoFixedLength))); | 1487 Immediate(Smi::RawValue(Field::kNoFixedLength))); |
1490 } | 1488 } |
1491 } | 1489 } |
1492 } | 1490 } |
1493 | 1491 |
1494 if (!ok_is_fall_through) { | |
1495 __ jmp(&ok); | |
1496 } | |
1497 | |
1498 if (deopt == NULL) { | 1492 if (deopt == NULL) { |
1499 ASSERT(!compiler->is_optimizing()); | 1493 ASSERT(!compiler->is_optimizing()); |
| 1494 __ jmp(&ok); |
1500 __ Bind(fail); | 1495 __ Bind(fail); |
1501 | 1496 |
1502 __ cmpl(FieldAddress(field_reg, Field::guarded_cid_offset()), | 1497 __ cmpl(FieldAddress(field_reg, Field::guarded_cid_offset()), |
1503 Immediate(kDynamicCid)); | 1498 Immediate(kDynamicCid)); |
1504 __ j(EQUAL, &ok); | 1499 __ j(EQUAL, &ok); |
1505 | 1500 |
1506 __ pushl(field_reg); | 1501 __ pushl(field_reg); |
1507 __ pushl(value_reg); | 1502 __ pushl(value_reg); |
1508 __ CallRuntime(kUpdateFieldCidRuntimeEntry, 2); | 1503 __ CallRuntime(kUpdateFieldCidRuntimeEntry, 2); |
1509 __ Drop(2); // Drop the field and the value. | 1504 __ Drop(2); // Drop the field and the value. |
1510 } | 1505 } |
1511 } else { | 1506 } else { |
1512 ASSERT(compiler->is_optimizing()); | 1507 ASSERT(compiler->is_optimizing()); |
1513 ASSERT(deopt != NULL); | 1508 ASSERT(deopt != NULL); |
1514 ASSERT(ok_is_fall_through); | |
1515 // Field guard class has been initialized and is known. | 1509 // Field guard class has been initialized and is known. |
1516 if (field_reg != kNoRegister) { | 1510 if (field_reg != kNoRegister) { |
1517 __ LoadObject(field_reg, Field::ZoneHandle(field().raw())); | 1511 __ LoadObject(field_reg, Field::ZoneHandle(field().raw())); |
1518 } | 1512 } |
1519 | 1513 |
1520 if (value_cid == kDynamicCid) { | 1514 if (value_cid == kDynamicCid) { |
1521 // Value's class id is not known. | 1515 // Value's class id is not known. |
1522 __ testl(value_reg, Immediate(kSmiTagMask)); | 1516 __ testl(value_reg, Immediate(kSmiTagMask)); |
1523 | 1517 |
1524 if (field_cid != kSmiCid) { | 1518 if (field_cid != kSmiCid) { |
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5202 PcDescriptors::kOther, | 5196 PcDescriptors::kOther, |
5203 locs()); | 5197 locs()); |
5204 __ Drop(2); // Discard type arguments and receiver. | 5198 __ Drop(2); // Discard type arguments and receiver. |
5205 } | 5199 } |
5206 | 5200 |
5207 } // namespace dart | 5201 } // namespace dart |
5208 | 5202 |
5209 #undef __ | 5203 #undef __ |
5210 | 5204 |
5211 #endif // defined TARGET_ARCH_IA32 | 5205 #endif // defined TARGET_ARCH_IA32 |
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