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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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3666 ACCESSORS(SharedFunctionInfo, construct_stub, Code, kConstructStubOffset) | 3666 ACCESSORS(SharedFunctionInfo, construct_stub, Code, kConstructStubOffset) |
3667 ACCESSORS(SharedFunctionInfo, initial_map, Object, kInitialMapOffset) | 3667 ACCESSORS(SharedFunctionInfo, initial_map, Object, kInitialMapOffset) |
3668 ACCESSORS(SharedFunctionInfo, instance_class_name, Object, | 3668 ACCESSORS(SharedFunctionInfo, instance_class_name, Object, |
3669 kInstanceClassNameOffset) | 3669 kInstanceClassNameOffset) |
3670 ACCESSORS(SharedFunctionInfo, function_data, Object, kFunctionDataOffset) | 3670 ACCESSORS(SharedFunctionInfo, function_data, Object, kFunctionDataOffset) |
3671 ACCESSORS(SharedFunctionInfo, script, Object, kScriptOffset) | 3671 ACCESSORS(SharedFunctionInfo, script, Object, kScriptOffset) |
3672 ACCESSORS(SharedFunctionInfo, debug_info, Object, kDebugInfoOffset) | 3672 ACCESSORS(SharedFunctionInfo, debug_info, Object, kDebugInfoOffset) |
3673 ACCESSORS(SharedFunctionInfo, inferred_name, String, kInferredNameOffset) | 3673 ACCESSORS(SharedFunctionInfo, inferred_name, String, kInferredNameOffset) |
3674 ACCESSORS(SharedFunctionInfo, this_property_assignments, Object, | 3674 ACCESSORS(SharedFunctionInfo, this_property_assignments, Object, |
3675 kThisPropertyAssignmentsOffset) | 3675 kThisPropertyAssignmentsOffset) |
3676 SMI_ACCESSORS(SharedFunctionInfo, ic_age, kICAgeOffset) | 3676 SMI_ACCESSORS(SharedFunctionInfo, ast_node_count, kAstNodeCountOffset) |
3677 | 3677 |
3678 | 3678 |
3679 BOOL_ACCESSORS(FunctionTemplateInfo, flag, hidden_prototype, | 3679 BOOL_ACCESSORS(FunctionTemplateInfo, flag, hidden_prototype, |
3680 kHiddenPrototypeBit) | 3680 kHiddenPrototypeBit) |
3681 BOOL_ACCESSORS(FunctionTemplateInfo, flag, undetectable, kUndetectableBit) | 3681 BOOL_ACCESSORS(FunctionTemplateInfo, flag, undetectable, kUndetectableBit) |
3682 BOOL_ACCESSORS(FunctionTemplateInfo, flag, needs_access_check, | 3682 BOOL_ACCESSORS(FunctionTemplateInfo, flag, needs_access_check, |
3683 kNeedsAccessCheckBit) | 3683 kNeedsAccessCheckBit) |
3684 BOOL_ACCESSORS(FunctionTemplateInfo, flag, read_only_prototype, | 3684 BOOL_ACCESSORS(FunctionTemplateInfo, flag, read_only_prototype, |
3685 kReadOnlyPrototypeBit) | 3685 kReadOnlyPrototypeBit) |
3686 BOOL_ACCESSORS(SharedFunctionInfo, start_position_and_type, is_expression, | 3686 BOOL_ACCESSORS(SharedFunctionInfo, start_position_and_type, is_expression, |
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3715 SMI_ACCESSORS(SharedFunctionInfo, start_position_and_type, | 3715 SMI_ACCESSORS(SharedFunctionInfo, start_position_and_type, |
3716 kStartPositionAndTypeOffset) | 3716 kStartPositionAndTypeOffset) |
3717 SMI_ACCESSORS(SharedFunctionInfo, end_position, kEndPositionOffset) | 3717 SMI_ACCESSORS(SharedFunctionInfo, end_position, kEndPositionOffset) |
3718 SMI_ACCESSORS(SharedFunctionInfo, function_token_position, | 3718 SMI_ACCESSORS(SharedFunctionInfo, function_token_position, |
3719 kFunctionTokenPositionOffset) | 3719 kFunctionTokenPositionOffset) |
3720 SMI_ACCESSORS(SharedFunctionInfo, compiler_hints, | 3720 SMI_ACCESSORS(SharedFunctionInfo, compiler_hints, |
3721 kCompilerHintsOffset) | 3721 kCompilerHintsOffset) |
3722 SMI_ACCESSORS(SharedFunctionInfo, this_property_assignments_count, | 3722 SMI_ACCESSORS(SharedFunctionInfo, this_property_assignments_count, |
3723 kThisPropertyAssignmentsCountOffset) | 3723 kThisPropertyAssignmentsCountOffset) |
3724 SMI_ACCESSORS(SharedFunctionInfo, opt_count, kOptCountOffset) | 3724 SMI_ACCESSORS(SharedFunctionInfo, opt_count, kOptCountOffset) |
3725 SMI_ACCESSORS(SharedFunctionInfo, ast_node_count, kAstNodeCountOffset) | 3725 SMI_ACCESSORS(SharedFunctionInfo, counters, kCountersOffset) |
3726 SMI_ACCESSORS(SharedFunctionInfo, deopt_counter, kDeoptCounterOffset) | 3726 SMI_ACCESSORS(SharedFunctionInfo, |
| 3727 stress_deopt_counter, |
| 3728 kStressDeoptCounterOffset) |
3727 #else | 3729 #else |
3728 | 3730 |
3729 #define PSEUDO_SMI_ACCESSORS_LO(holder, name, offset) \ | 3731 #define PSEUDO_SMI_ACCESSORS_LO(holder, name, offset) \ |
3730 STATIC_ASSERT(holder::offset % kPointerSize == 0); \ | 3732 STATIC_ASSERT(holder::offset % kPointerSize == 0); \ |
3731 int holder::name() { \ | 3733 int holder::name() { \ |
3732 int value = READ_INT_FIELD(this, offset); \ | 3734 int value = READ_INT_FIELD(this, offset); \ |
3733 ASSERT(kHeapObjectTag == 1); \ | 3735 ASSERT(kHeapObjectTag == 1); \ |
3734 ASSERT((value & kHeapObjectTag) == 0); \ | 3736 ASSERT((value & kHeapObjectTag) == 0); \ |
3735 return value >> 1; \ | 3737 return value >> 1; \ |
3736 } \ | 3738 } \ |
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3768 kFunctionTokenPositionOffset) | 3770 kFunctionTokenPositionOffset) |
3769 PSEUDO_SMI_ACCESSORS_HI(SharedFunctionInfo, | 3771 PSEUDO_SMI_ACCESSORS_HI(SharedFunctionInfo, |
3770 compiler_hints, | 3772 compiler_hints, |
3771 kCompilerHintsOffset) | 3773 kCompilerHintsOffset) |
3772 | 3774 |
3773 PSEUDO_SMI_ACCESSORS_LO(SharedFunctionInfo, | 3775 PSEUDO_SMI_ACCESSORS_LO(SharedFunctionInfo, |
3774 this_property_assignments_count, | 3776 this_property_assignments_count, |
3775 kThisPropertyAssignmentsCountOffset) | 3777 kThisPropertyAssignmentsCountOffset) |
3776 PSEUDO_SMI_ACCESSORS_HI(SharedFunctionInfo, opt_count, kOptCountOffset) | 3778 PSEUDO_SMI_ACCESSORS_HI(SharedFunctionInfo, opt_count, kOptCountOffset) |
3777 | 3779 |
3778 PSEUDO_SMI_ACCESSORS_LO(SharedFunctionInfo, ast_node_count, kAstNodeCountOffset) | 3780 PSEUDO_SMI_ACCESSORS_LO(SharedFunctionInfo, counters, kCountersOffset) |
3779 PSEUDO_SMI_ACCESSORS_HI(SharedFunctionInfo, deopt_counter, kDeoptCounterOffset) | 3781 PSEUDO_SMI_ACCESSORS_HI(SharedFunctionInfo, |
| 3782 stress_deopt_counter, |
| 3783 kStressDeoptCounterOffset) |
3780 #endif | 3784 #endif |
3781 | 3785 |
3782 | 3786 |
3783 int SharedFunctionInfo::construction_count() { | 3787 int SharedFunctionInfo::construction_count() { |
3784 return READ_BYTE_FIELD(this, kConstructionCountOffset); | 3788 return READ_BYTE_FIELD(this, kConstructionCountOffset); |
3785 } | 3789 } |
3786 | 3790 |
3787 | 3791 |
3788 void SharedFunctionInfo::set_construction_count(int value) { | 3792 void SharedFunctionInfo::set_construction_count(int value) { |
3789 ASSERT(0 <= value && value < 256); | 3793 ASSERT(0 <= value && value < 256); |
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3970 return (compiler_hints() >> kCodeAgeShift) & kCodeAgeMask; | 3974 return (compiler_hints() >> kCodeAgeShift) & kCodeAgeMask; |
3971 } | 3975 } |
3972 | 3976 |
3973 | 3977 |
3974 void SharedFunctionInfo::set_code_age(int code_age) { | 3978 void SharedFunctionInfo::set_code_age(int code_age) { |
3975 int hints = compiler_hints() & ~(kCodeAgeMask << kCodeAgeShift); | 3979 int hints = compiler_hints() & ~(kCodeAgeMask << kCodeAgeShift); |
3976 set_compiler_hints(hints | ((code_age & kCodeAgeMask) << kCodeAgeShift)); | 3980 set_compiler_hints(hints | ((code_age & kCodeAgeMask) << kCodeAgeShift)); |
3977 } | 3981 } |
3978 | 3982 |
3979 | 3983 |
| 3984 int SharedFunctionInfo::ic_age() { |
| 3985 return ICAgeBits::decode(counters()); |
| 3986 } |
| 3987 |
| 3988 |
| 3989 void SharedFunctionInfo::set_ic_age(int ic_age) { |
| 3990 set_counters(ICAgeBits::update(counters(), ic_age)); |
| 3991 } |
| 3992 |
| 3993 |
| 3994 int SharedFunctionInfo::deopt_count() { |
| 3995 return DeoptCountBits::decode(counters()); |
| 3996 } |
| 3997 |
| 3998 |
| 3999 void SharedFunctionInfo::set_deopt_count(int deopt_count) { |
| 4000 set_counters(DeoptCountBits::update(counters(), deopt_count)); |
| 4001 } |
| 4002 |
| 4003 |
| 4004 void SharedFunctionInfo::increment_deopt_count() { |
| 4005 int value = counters(); |
| 4006 int deopt_count = DeoptCountBits::decode(value); |
| 4007 deopt_count = (deopt_count + 1) & DeoptCountBits::kMax; |
| 4008 set_counters(DeoptCountBits::update(value, deopt_count)); |
| 4009 } |
| 4010 |
| 4011 |
| 4012 int SharedFunctionInfo::opt_reenable_tries() { |
| 4013 return OptReenableTriesBits::decode(counters()); |
| 4014 } |
| 4015 |
| 4016 |
| 4017 void SharedFunctionInfo::set_opt_reenable_tries(int tries) { |
| 4018 set_counters(OptReenableTriesBits::update(counters(), tries)); |
| 4019 } |
| 4020 |
| 4021 |
3980 bool SharedFunctionInfo::has_deoptimization_support() { | 4022 bool SharedFunctionInfo::has_deoptimization_support() { |
3981 Code* code = this->code(); | 4023 Code* code = this->code(); |
3982 return code->kind() == Code::FUNCTION && code->has_deoptimization_support(); | 4024 return code->kind() == Code::FUNCTION && code->has_deoptimization_support(); |
3983 } | 4025 } |
3984 | 4026 |
3985 | 4027 |
| 4028 void SharedFunctionInfo::TryReenableOptimization() { |
| 4029 int tries = opt_reenable_tries(); |
| 4030 set_opt_reenable_tries((tries + 1) & OptReenableTriesBits::kMax); |
| 4031 // We reenable optimization whenever the number of tries is a large |
| 4032 // enough power of 2. |
| 4033 if (tries >= 16 && (((tries - 1) & tries) == 0)) { |
| 4034 set_optimization_disabled(false); |
| 4035 set_opt_count(0); |
| 4036 set_deopt_count(0); |
| 4037 code()->set_optimizable(true); |
| 4038 } |
| 4039 } |
| 4040 |
| 4041 |
3986 bool JSFunction::IsBuiltin() { | 4042 bool JSFunction::IsBuiltin() { |
3987 return context()->global()->IsJSBuiltinsObject(); | 4043 return context()->global()->IsJSBuiltinsObject(); |
3988 } | 4044 } |
3989 | 4045 |
3990 | 4046 |
3991 bool JSFunction::NeedsArgumentsAdaption() { | 4047 bool JSFunction::NeedsArgumentsAdaption() { |
3992 return shared()->formal_parameter_count() != | 4048 return shared()->formal_parameter_count() != |
3993 SharedFunctionInfo::kDontAdaptArgumentsSentinel; | 4049 SharedFunctionInfo::kDontAdaptArgumentsSentinel; |
3994 } | 4050 } |
3995 | 4051 |
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5123 #undef WRITE_UINT32_FIELD | 5179 #undef WRITE_UINT32_FIELD |
5124 #undef READ_SHORT_FIELD | 5180 #undef READ_SHORT_FIELD |
5125 #undef WRITE_SHORT_FIELD | 5181 #undef WRITE_SHORT_FIELD |
5126 #undef READ_BYTE_FIELD | 5182 #undef READ_BYTE_FIELD |
5127 #undef WRITE_BYTE_FIELD | 5183 #undef WRITE_BYTE_FIELD |
5128 | 5184 |
5129 | 5185 |
5130 } } // namespace v8::internal | 5186 } } // namespace v8::internal |
5131 | 5187 |
5132 #endif // V8_OBJECTS_INL_H_ | 5188 #endif // V8_OBJECTS_INL_H_ |
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