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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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5847 return HObjectAccess(kInobject, JSFunction::kContextOffset); | 5847 return HObjectAccess(kInobject, JSFunction::kContextOffset); |
5848 } | 5848 } |
5849 | 5849 |
5850 static HObjectAccess ForMap() { | 5850 static HObjectAccess ForMap() { |
5851 return HObjectAccess(kMaps, JSObject::kMapOffset); | 5851 return HObjectAccess(kMaps, JSObject::kMapOffset); |
5852 } | 5852 } |
5853 | 5853 |
5854 static HObjectAccess ForMapInstanceSize() { | 5854 static HObjectAccess ForMapInstanceSize() { |
5855 return HObjectAccess(kInobject, | 5855 return HObjectAccess(kInobject, |
5856 Map::kInstanceSizeOffset, | 5856 Map::kInstanceSizeOffset, |
5857 Representation::Byte()); | 5857 Representation::UInteger8()); |
5858 } | 5858 } |
5859 | 5859 |
5860 static HObjectAccess ForPropertyCellValue() { | 5860 static HObjectAccess ForPropertyCellValue() { |
5861 return HObjectAccess(kInobject, PropertyCell::kValueOffset); | 5861 return HObjectAccess(kInobject, PropertyCell::kValueOffset); |
5862 } | 5862 } |
5863 | 5863 |
5864 static HObjectAccess ForCellValue() { | 5864 static HObjectAccess ForCellValue() { |
5865 return HObjectAccess(kInobject, Cell::kValueOffset); | 5865 return HObjectAccess(kInobject, Cell::kValueOffset); |
5866 } | 5866 } |
5867 | 5867 |
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5925 RepresentationField::encode(representation.kind()) | | 5925 RepresentationField::encode(representation.kind()) | |
5926 OffsetField::encode(offset)), | 5926 OffsetField::encode(offset)), |
5927 name_(name) { | 5927 name_(name) { |
5928 // assert that the fields decode correctly | 5928 // assert that the fields decode correctly |
5929 ASSERT(this->offset() == offset); | 5929 ASSERT(this->offset() == offset); |
5930 ASSERT(this->portion() == portion); | 5930 ASSERT(this->portion() == portion); |
5931 ASSERT(RepresentationField::decode(value_) == representation.kind()); | 5931 ASSERT(RepresentationField::decode(value_) == representation.kind()); |
5932 } | 5932 } |
5933 | 5933 |
5934 class PortionField : public BitField<Portion, 0, 3> {}; | 5934 class PortionField : public BitField<Portion, 0, 3> {}; |
5935 class RepresentationField : public BitField<Representation::Kind, 3, 3> {}; | 5935 class RepresentationField : public BitField<Representation::Kind, 3, 4> {}; |
5936 class OffsetField : public BitField<int, 6, 26> {}; | 5936 class OffsetField : public BitField<int, 7, 25> {}; |
5937 | 5937 |
5938 uint32_t value_; // encodes portion, representation, and offset | 5938 uint32_t value_; // encodes portion, representation, and offset |
5939 Handle<String> name_; | 5939 Handle<String> name_; |
5940 | 5940 |
5941 friend class HLoadNamedField; | 5941 friend class HLoadNamedField; |
5942 friend class HStoreNamedField; | 5942 friend class HStoreNamedField; |
5943 | 5943 |
5944 inline Portion portion() const { | 5944 inline Portion portion() const { |
5945 return PortionField::decode(value_); | 5945 return PortionField::decode(value_); |
5946 } | 5946 } |
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5979 HLoadNamedField* b = HLoadNamedField::cast(other); | 5979 HLoadNamedField* b = HLoadNamedField::cast(other); |
5980 return access_.Equals(b->access_); | 5980 return access_.Equals(b->access_); |
5981 } | 5981 } |
5982 | 5982 |
5983 private: | 5983 private: |
5984 HLoadNamedField(HValue* object, HObjectAccess access) : access_(access) { | 5984 HLoadNamedField(HValue* object, HObjectAccess access) : access_(access) { |
5985 ASSERT(object != NULL); | 5985 ASSERT(object != NULL); |
5986 SetOperandAt(0, object); | 5986 SetOperandAt(0, object); |
5987 | 5987 |
5988 Representation representation = access.representation(); | 5988 Representation representation = access.representation(); |
5989 if (representation.IsByte()) { | 5989 if (representation.IsInteger8() || |
| 5990 representation.IsUInteger8() || |
| 5991 representation.IsInteger16() || |
| 5992 representation.IsUInteger16()) { |
5990 set_representation(Representation::Integer32()); | 5993 set_representation(Representation::Integer32()); |
5991 } else if (representation.IsSmi()) { | 5994 } else if (representation.IsSmi()) { |
5992 set_type(HType::Smi()); | 5995 set_type(HType::Smi()); |
5993 set_representation(representation); | 5996 set_representation(representation); |
5994 } else if (representation.IsDouble() || | 5997 } else if (representation.IsDouble() || |
5995 representation.IsExternal() || | 5998 representation.IsExternal() || |
5996 representation.IsInteger32()) { | 5999 representation.IsInteger32()) { |
5997 set_representation(representation); | 6000 set_representation(representation); |
5998 } else if (FLAG_track_heap_object_fields && | 6001 } else if (FLAG_track_heap_object_fields && |
5999 representation.IsHeapObject()) { | 6002 representation.IsHeapObject()) { |
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6289 return index == 1; | 6292 return index == 1; |
6290 } | 6293 } |
6291 virtual bool HasOutOfBoundsAccess(int size) V8_OVERRIDE { | 6294 virtual bool HasOutOfBoundsAccess(int size) V8_OVERRIDE { |
6292 return !access().IsInobject() || access().offset() >= size; | 6295 return !access().IsInobject() || access().offset() >= size; |
6293 } | 6296 } |
6294 virtual Representation RequiredInputRepresentation(int index) V8_OVERRIDE { | 6297 virtual Representation RequiredInputRepresentation(int index) V8_OVERRIDE { |
6295 if (index == 0 && access().IsExternalMemory()) { | 6298 if (index == 0 && access().IsExternalMemory()) { |
6296 // object must be external in case of external memory access | 6299 // object must be external in case of external memory access |
6297 return Representation::External(); | 6300 return Representation::External(); |
6298 } else if (index == 1) { | 6301 } else if (index == 1) { |
6299 if (field_representation().IsByte() || | 6302 if (field_representation().IsInteger8() || |
| 6303 field_representation().IsUInteger8() || |
| 6304 field_representation().IsInteger16() || |
| 6305 field_representation().IsUInteger16() || |
6300 field_representation().IsInteger32()) { | 6306 field_representation().IsInteger32()) { |
6301 return Representation::Integer32(); | 6307 return Representation::Integer32(); |
6302 } else if (field_representation().IsDouble() || | 6308 } else if (field_representation().IsDouble() || |
6303 field_representation().IsSmi()) { | 6309 field_representation().IsSmi()) { |
6304 return field_representation(); | 6310 return field_representation(); |
6305 } | 6311 } |
6306 } | 6312 } |
6307 return Representation::Tagged(); | 6313 return Representation::Tagged(); |
6308 } | 6314 } |
6309 virtual void HandleSideEffectDominator(GVNFlag side_effect, | 6315 virtual void HandleSideEffectDominator(GVNFlag side_effect, |
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7190 virtual bool IsDeletable() const V8_OVERRIDE { return true; } | 7196 virtual bool IsDeletable() const V8_OVERRIDE { return true; } |
7191 }; | 7197 }; |
7192 | 7198 |
7193 | 7199 |
7194 #undef DECLARE_INSTRUCTION | 7200 #undef DECLARE_INSTRUCTION |
7195 #undef DECLARE_CONCRETE_INSTRUCTION | 7201 #undef DECLARE_CONCRETE_INSTRUCTION |
7196 | 7202 |
7197 } } // namespace v8::internal | 7203 } } // namespace v8::internal |
7198 | 7204 |
7199 #endif // V8_HYDROGEN_INSTRUCTIONS_H_ | 7205 #endif // V8_HYDROGEN_INSTRUCTIONS_H_ |
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