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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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5947 HLoadNamedField* b = HLoadNamedField::cast(other); | 5947 HLoadNamedField* b = HLoadNamedField::cast(other); |
5948 return access_.Equals(b->access_); | 5948 return access_.Equals(b->access_); |
5949 } | 5949 } |
5950 | 5950 |
5951 private: | 5951 private: |
5952 HLoadNamedField(HValue* object, HObjectAccess access) : access_(access) { | 5952 HLoadNamedField(HValue* object, HObjectAccess access) : access_(access) { |
5953 ASSERT(object != NULL); | 5953 ASSERT(object != NULL); |
5954 SetOperandAt(0, object); | 5954 SetOperandAt(0, object); |
5955 | 5955 |
5956 Representation representation = access.representation(); | 5956 Representation representation = access.representation(); |
5957 if (representation.IsByte()) { | 5957 if (representation.IsSmi()) { |
5958 set_representation(Representation::Integer32()); | |
5959 } else if (representation.IsSmi()) { | |
5960 set_type(HType::Smi()); | 5958 set_type(HType::Smi()); |
5961 set_representation(representation); | 5959 set_representation(representation); |
5962 } else if (representation.IsDouble() || | 5960 } else if (representation.IsDouble() || |
5963 representation.IsExternal() || | 5961 representation.IsExternal() || |
5964 representation.IsInteger32()) { | 5962 representation.IsInteger32()) { |
5965 set_representation(representation); | 5963 set_representation(representation); |
5966 } else if (FLAG_track_heap_object_fields && | 5964 } else if (FLAG_track_heap_object_fields && |
5967 representation.IsHeapObject()) { | 5965 representation.IsHeapObject()) { |
5968 set_type(HType::NonPrimitive()); | 5966 set_type(HType::NonPrimitive()); |
5969 set_representation(Representation::Tagged()); | 5967 set_representation(Representation::Tagged()); |
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6247 virtual bool HasEscapingOperandAt(int index) V8_OVERRIDE { | 6245 virtual bool HasEscapingOperandAt(int index) V8_OVERRIDE { |
6248 return index == 1; | 6246 return index == 1; |
6249 } | 6247 } |
6250 virtual bool HasOutOfBoundsAccess(int size) V8_OVERRIDE { | 6248 virtual bool HasOutOfBoundsAccess(int size) V8_OVERRIDE { |
6251 return !access().IsInobject() || access().offset() >= size; | 6249 return !access().IsInobject() || access().offset() >= size; |
6252 } | 6250 } |
6253 virtual Representation RequiredInputRepresentation(int index) V8_OVERRIDE { | 6251 virtual Representation RequiredInputRepresentation(int index) V8_OVERRIDE { |
6254 if (index == 0 && access().IsExternalMemory()) { | 6252 if (index == 0 && access().IsExternalMemory()) { |
6255 // object must be external in case of external memory access | 6253 // object must be external in case of external memory access |
6256 return Representation::External(); | 6254 return Representation::External(); |
6257 } else if (index == 1) { | 6255 } else if (index == 1 && |
6258 if (field_representation().IsByte() || | 6256 (field_representation().IsDouble() || |
6259 field_representation().IsInteger32()) { | 6257 field_representation().IsSmi() || |
6260 return Representation::Integer32(); | 6258 field_representation().IsInteger32())) { |
6261 } else if (field_representation().IsDouble() || | 6259 return field_representation(); |
6262 field_representation().IsSmi()) { | |
6263 return field_representation(); | |
6264 } | |
6265 } | 6260 } |
6266 return Representation::Tagged(); | 6261 return Representation::Tagged(); |
6267 } | 6262 } |
6268 virtual void HandleSideEffectDominator(GVNFlag side_effect, | 6263 virtual void HandleSideEffectDominator(GVNFlag side_effect, |
6269 HValue* dominator) V8_OVERRIDE { | 6264 HValue* dominator) V8_OVERRIDE { |
6270 ASSERT(side_effect == kChangesNewSpacePromotion); | 6265 ASSERT(side_effect == kChangesNewSpacePromotion); |
6271 new_space_dominator_ = dominator; | 6266 new_space_dominator_ = dominator; |
6272 } | 6267 } |
6273 virtual void PrintDataTo(StringStream* stream) V8_OVERRIDE; | 6268 virtual void PrintDataTo(StringStream* stream) V8_OVERRIDE; |
6274 | 6269 |
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7131 virtual bool IsDeletable() const V8_OVERRIDE { return true; } | 7126 virtual bool IsDeletable() const V8_OVERRIDE { return true; } |
7132 }; | 7127 }; |
7133 | 7128 |
7134 | 7129 |
7135 #undef DECLARE_INSTRUCTION | 7130 #undef DECLARE_INSTRUCTION |
7136 #undef DECLARE_CONCRETE_INSTRUCTION | 7131 #undef DECLARE_CONCRETE_INSTRUCTION |
7137 | 7132 |
7138 } } // namespace v8::internal | 7133 } } // namespace v8::internal |
7139 | 7134 |
7140 #endif // V8_HYDROGEN_INSTRUCTIONS_H_ | 7135 #endif // V8_HYDROGEN_INSTRUCTIONS_H_ |
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