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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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7681 FixedArray* code_map = FixedArray::cast(optimized_code_map()); | 7681 FixedArray* code_map = FixedArray::cast(optimized_code_map()); |
7682 if (!bound()) { | 7682 if (!bound()) { |
7683 FixedArray* cached_literals = FixedArray::cast(code_map->get(index + 1)); | 7683 FixedArray* cached_literals = FixedArray::cast(code_map->get(index + 1)); |
7684 ASSERT(cached_literals != NULL); | 7684 ASSERT(cached_literals != NULL); |
7685 function->set_literals(cached_literals); | 7685 function->set_literals(cached_literals); |
7686 } | 7686 } |
7687 Code* code = Code::cast(code_map->get(index)); | 7687 Code* code = Code::cast(code_map->get(index)); |
7688 ASSERT(code != NULL); | 7688 ASSERT(code != NULL); |
7689 ASSERT(function->context()->native_context() == code_map->get(index - 1)); | 7689 ASSERT(function->context()->native_context() == code_map->get(index - 1)); |
7690 function->ReplaceCode(code); | 7690 function->ReplaceCode(code); |
| 7691 code->MakeYoung(); |
7691 } | 7692 } |
7692 | 7693 |
7693 | 7694 |
7694 bool JSFunction::CompileLazy(Handle<JSFunction> function, | 7695 bool JSFunction::CompileLazy(Handle<JSFunction> function, |
7695 ClearExceptionFlag flag) { | 7696 ClearExceptionFlag flag) { |
7696 bool result = true; | 7697 bool result = true; |
7697 if (function->shared()->is_compiled()) { | 7698 if (function->shared()->is_compiled()) { |
7698 function->ReplaceCode(function->shared()->code()); | 7699 function->ReplaceCode(function->shared()->code()); |
7699 function->shared()->set_code_age(0); | |
7700 } else { | 7700 } else { |
7701 ASSERT(function->shared()->allows_lazy_compilation()); | 7701 ASSERT(function->shared()->allows_lazy_compilation()); |
7702 CompilationInfoWithZone info(function); | 7702 CompilationInfoWithZone info(function); |
7703 result = CompileLazyHelper(&info, flag); | 7703 result = CompileLazyHelper(&info, flag); |
7704 ASSERT(!result || function->is_compiled()); | 7704 ASSERT(!result || function->is_compiled()); |
7705 } | 7705 } |
7706 return result; | 7706 return result; |
7707 } | 7707 } |
7708 | 7708 |
7709 | 7709 |
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8277 | 8277 |
8278 void ObjectVisitor::VisitCodeTarget(RelocInfo* rinfo) { | 8278 void ObjectVisitor::VisitCodeTarget(RelocInfo* rinfo) { |
8279 ASSERT(RelocInfo::IsCodeTarget(rinfo->rmode())); | 8279 ASSERT(RelocInfo::IsCodeTarget(rinfo->rmode())); |
8280 Object* target = Code::GetCodeFromTargetAddress(rinfo->target_address()); | 8280 Object* target = Code::GetCodeFromTargetAddress(rinfo->target_address()); |
8281 Object* old_target = target; | 8281 Object* old_target = target; |
8282 VisitPointer(&target); | 8282 VisitPointer(&target); |
8283 CHECK_EQ(target, old_target); // VisitPointer doesn't change Code* *target. | 8283 CHECK_EQ(target, old_target); // VisitPointer doesn't change Code* *target. |
8284 } | 8284 } |
8285 | 8285 |
8286 | 8286 |
| 8287 void ObjectVisitor::VisitCodeAgeSequence(RelocInfo* rinfo) { |
| 8288 ASSERT(RelocInfo::IsCodeAgeSequence(rinfo->rmode())); |
| 8289 Object* stub = rinfo->code_age_stub(); |
| 8290 if (stub) { |
| 8291 VisitPointer(&stub); |
| 8292 } |
| 8293 } |
| 8294 |
| 8295 |
8287 void ObjectVisitor::VisitCodeEntry(Address entry_address) { | 8296 void ObjectVisitor::VisitCodeEntry(Address entry_address) { |
8288 Object* code = Code::GetObjectFromEntryAddress(entry_address); | 8297 Object* code = Code::GetObjectFromEntryAddress(entry_address); |
8289 Object* old_code = code; | 8298 Object* old_code = code; |
8290 VisitPointer(&code); | 8299 VisitPointer(&code); |
8291 if (code != old_code) { | 8300 if (code != old_code) { |
8292 Memory::Address_at(entry_address) = reinterpret_cast<Code*>(code)->entry(); | 8301 Memory::Address_at(entry_address) = reinterpret_cast<Code*>(code)->entry(); |
8293 } | 8302 } |
8294 } | 8303 } |
8295 | 8304 |
8296 | 8305 |
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8489 } | 8498 } |
8490 } | 8499 } |
8491 | 8500 |
8492 | 8501 |
8493 bool Code::allowed_in_shared_map_code_cache() { | 8502 bool Code::allowed_in_shared_map_code_cache() { |
8494 return is_keyed_load_stub() || is_keyed_store_stub() || | 8503 return is_keyed_load_stub() || is_keyed_store_stub() || |
8495 (is_compare_ic_stub() && compare_state() == CompareIC::KNOWN_OBJECTS); | 8504 (is_compare_ic_stub() && compare_state() == CompareIC::KNOWN_OBJECTS); |
8496 } | 8505 } |
8497 | 8506 |
8498 | 8507 |
| 8508 void Code::MakeCodeAgeSequenceYoung(byte* sequence) { |
| 8509 PatchPlatformCodeAge(sequence, kNoAge, NO_MARKING_PARITY); |
| 8510 } |
| 8511 |
| 8512 |
| 8513 void Code::MakeYoung() { |
| 8514 byte* sequence = FindCodeAgeSequence(); |
| 8515 if (sequence != NULL) { |
| 8516 PatchPlatformCodeAge(sequence, kNoAge, NO_MARKING_PARITY); |
| 8517 } |
| 8518 } |
| 8519 |
| 8520 |
| 8521 void Code::MakeOlder(MarkingParity current_parity) { |
| 8522 byte* sequence = FindCodeAgeSequence(); |
| 8523 if (sequence != NULL) { |
| 8524 Age age; |
| 8525 MarkingParity code_parity; |
| 8526 GetCodeAgeAndParity(sequence, &age, &code_parity); |
| 8527 if (age != kLastCodeAge && code_parity != current_parity) { |
| 8528 PatchPlatformCodeAge(sequence, static_cast<Age>(age + 1), |
| 8529 current_parity); |
| 8530 } |
| 8531 } |
| 8532 } |
| 8533 |
| 8534 |
| 8535 bool Code::IsOld() { |
| 8536 byte* sequence = FindCodeAgeSequence(); |
| 8537 if (sequence == NULL) return false; |
| 8538 Age age; |
| 8539 MarkingParity parity; |
| 8540 GetCodeAgeAndParity(sequence, &age, &parity); |
| 8541 return age >= kSexagenarianCodeAge; |
| 8542 } |
| 8543 |
| 8544 |
| 8545 byte* Code::FindCodeAgeSequence() { |
| 8546 if (kind() != FUNCTION && kind() != OPTIMIZED_FUNCTION) return NULL; |
| 8547 if (strlen(FLAG_stop_at) == 0 && |
| 8548 !ProfileEntryHookStub::HasEntryHook() && |
| 8549 (kind() == FUNCTION && !has_debug_break_slots())) { |
| 8550 return FindPlatformCodeAgeSequence(); |
| 8551 } |
| 8552 return NULL; |
| 8553 } |
| 8554 |
| 8555 |
| 8556 void Code::GetCodeAgeAndParity(Code* code, Age* age, |
| 8557 MarkingParity* parity) { |
| 8558 Isolate* isolate = Isolate::Current(); |
| 8559 Builtins* builtins = isolate->builtins(); |
| 8560 Code* stub = NULL; |
| 8561 #define HANDLE_CODE_AGE(AGE) \ |
| 8562 stub = *builtins->Make##AGE##CodeYoungAgainEvenMarking(); \ |
| 8563 if (code == stub) { \ |
| 8564 *age = k##AGE##CodeAge; \ |
| 8565 *parity = EVEN_MARKING_PARITY; \ |
| 8566 return; \ |
| 8567 } \ |
| 8568 stub = *builtins->Make##AGE##CodeYoungAgainOddMarking(); \ |
| 8569 if (code == stub) { \ |
| 8570 *age = k##AGE##CodeAge; \ |
| 8571 *parity = ODD_MARKING_PARITY; \ |
| 8572 return; \ |
| 8573 } |
| 8574 CODE_AGE_LIST(HANDLE_CODE_AGE) |
| 8575 #undef HANDLE_CODE_AGE |
| 8576 UNREACHABLE(); |
| 8577 } |
| 8578 |
| 8579 |
| 8580 Code* Code::GetCodeAgeStub(Age age, MarkingParity parity) { |
| 8581 Isolate* isolate = Isolate::Current(); |
| 8582 Builtins* builtins = isolate->builtins(); |
| 8583 switch (age) { |
| 8584 #define HANDLE_CODE_AGE(AGE) \ |
| 8585 case k##AGE##CodeAge: { \ |
| 8586 Code* stub = parity == EVEN_MARKING_PARITY \ |
| 8587 ? *builtins->Make##AGE##CodeYoungAgainEvenMarking() \ |
| 8588 : *builtins->Make##AGE##CodeYoungAgainOddMarking(); \ |
| 8589 return stub; \ |
| 8590 } |
| 8591 CODE_AGE_LIST(HANDLE_CODE_AGE) |
| 8592 #undef HANDLE_CODE_AGE |
| 8593 default: |
| 8594 UNREACHABLE(); |
| 8595 break; |
| 8596 } |
| 8597 return NULL; |
| 8598 } |
| 8599 |
| 8600 |
8499 #ifdef ENABLE_DISASSEMBLER | 8601 #ifdef ENABLE_DISASSEMBLER |
8500 | 8602 |
8501 void DeoptimizationInputData::DeoptimizationInputDataPrint(FILE* out) { | 8603 void DeoptimizationInputData::DeoptimizationInputDataPrint(FILE* out) { |
8502 disasm::NameConverter converter; | 8604 disasm::NameConverter converter; |
8503 int deopt_count = DeoptCount(); | 8605 int deopt_count = DeoptCount(); |
8504 PrintF(out, "Deoptimization Input Data (deopt points = %d)\n", deopt_count); | 8606 PrintF(out, "Deoptimization Input Data (deopt points = %d)\n", deopt_count); |
8505 if (0 == deopt_count) return; | 8607 if (0 == deopt_count) return; |
8506 | 8608 |
8507 PrintF(out, "%6s %6s %6s %6s %12s\n", "index", "ast id", "argc", "pc", | 8609 PrintF(out, "%6s %6s %6s %6s %12s\n", "index", "ast id", "argc", "pc", |
8508 FLAG_print_code_verbose ? "commands" : ""); | 8610 FLAG_print_code_verbose ? "commands" : ""); |
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13502 set_year(Smi::FromInt(year), SKIP_WRITE_BARRIER); | 13604 set_year(Smi::FromInt(year), SKIP_WRITE_BARRIER); |
13503 set_month(Smi::FromInt(month), SKIP_WRITE_BARRIER); | 13605 set_month(Smi::FromInt(month), SKIP_WRITE_BARRIER); |
13504 set_day(Smi::FromInt(day), SKIP_WRITE_BARRIER); | 13606 set_day(Smi::FromInt(day), SKIP_WRITE_BARRIER); |
13505 set_weekday(Smi::FromInt(weekday), SKIP_WRITE_BARRIER); | 13607 set_weekday(Smi::FromInt(weekday), SKIP_WRITE_BARRIER); |
13506 set_hour(Smi::FromInt(hour), SKIP_WRITE_BARRIER); | 13608 set_hour(Smi::FromInt(hour), SKIP_WRITE_BARRIER); |
13507 set_min(Smi::FromInt(min), SKIP_WRITE_BARRIER); | 13609 set_min(Smi::FromInt(min), SKIP_WRITE_BARRIER); |
13508 set_sec(Smi::FromInt(sec), SKIP_WRITE_BARRIER); | 13610 set_sec(Smi::FromInt(sec), SKIP_WRITE_BARRIER); |
13509 } | 13611 } |
13510 | 13612 |
13511 } } // namespace v8::internal | 13613 } } // namespace v8::internal |
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