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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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5927 HLoadNamedField* b = HLoadNamedField::cast(other); | 5927 HLoadNamedField* b = HLoadNamedField::cast(other); |
5928 return access_.Equals(b->access_); | 5928 return access_.Equals(b->access_); |
5929 } | 5929 } |
5930 | 5930 |
5931 private: | 5931 private: |
5932 HLoadNamedField(HValue* object, HObjectAccess access) : access_(access) { | 5932 HLoadNamedField(HValue* object, HObjectAccess access) : access_(access) { |
5933 ASSERT(object != NULL); | 5933 ASSERT(object != NULL); |
5934 SetOperandAt(0, object); | 5934 SetOperandAt(0, object); |
5935 | 5935 |
5936 Representation representation = access.representation(); | 5936 Representation representation = access.representation(); |
5937 if (representation.IsSmi()) { | 5937 if (representation.IsByte()) { |
| 5938 set_representation(Representation::Integer32()); |
| 5939 } else if (representation.IsSmi()) { |
5938 set_type(HType::Smi()); | 5940 set_type(HType::Smi()); |
5939 set_representation(representation); | 5941 set_representation(representation); |
5940 } else if (representation.IsDouble() || | 5942 } else if (representation.IsDouble() || |
5941 representation.IsExternal() || | 5943 representation.IsExternal() || |
5942 representation.IsInteger32()) { | 5944 representation.IsInteger32()) { |
5943 set_representation(representation); | 5945 set_representation(representation); |
5944 } else if (FLAG_track_heap_object_fields && | 5946 } else if (FLAG_track_heap_object_fields && |
5945 representation.IsHeapObject()) { | 5947 representation.IsHeapObject()) { |
5946 set_type(HType::NonPrimitive()); | 5948 set_type(HType::NonPrimitive()); |
5947 set_representation(Representation::Tagged()); | 5949 set_representation(Representation::Tagged()); |
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6225 virtual bool HasEscapingOperandAt(int index) V8_OVERRIDE { | 6227 virtual bool HasEscapingOperandAt(int index) V8_OVERRIDE { |
6226 return index == 1; | 6228 return index == 1; |
6227 } | 6229 } |
6228 virtual bool HasOutOfBoundsAccess(int size) V8_OVERRIDE { | 6230 virtual bool HasOutOfBoundsAccess(int size) V8_OVERRIDE { |
6229 return !access().IsInobject() || access().offset() >= size; | 6231 return !access().IsInobject() || access().offset() >= size; |
6230 } | 6232 } |
6231 virtual Representation RequiredInputRepresentation(int index) V8_OVERRIDE { | 6233 virtual Representation RequiredInputRepresentation(int index) V8_OVERRIDE { |
6232 if (index == 0 && access().IsExternalMemory()) { | 6234 if (index == 0 && access().IsExternalMemory()) { |
6233 // object must be external in case of external memory access | 6235 // object must be external in case of external memory access |
6234 return Representation::External(); | 6236 return Representation::External(); |
6235 } else if (index == 1 && | 6237 } else if (index == 1) { |
6236 (field_representation().IsDouble() || | 6238 if (field_representation().IsByte() || |
6237 field_representation().IsSmi() || | 6239 field_representation().IsInteger32()) { |
6238 field_representation().IsInteger32())) { | 6240 return Representation::Integer32(); |
6239 return field_representation(); | 6241 } else if (field_representation().IsDouble() || |
| 6242 field_representation().IsSmi()) { |
| 6243 return field_representation(); |
| 6244 } |
6240 } | 6245 } |
6241 return Representation::Tagged(); | 6246 return Representation::Tagged(); |
6242 } | 6247 } |
6243 virtual void HandleSideEffectDominator(GVNFlag side_effect, | 6248 virtual void HandleSideEffectDominator(GVNFlag side_effect, |
6244 HValue* dominator) V8_OVERRIDE { | 6249 HValue* dominator) V8_OVERRIDE { |
6245 ASSERT(side_effect == kChangesNewSpacePromotion); | 6250 ASSERT(side_effect == kChangesNewSpacePromotion); |
6246 new_space_dominator_ = dominator; | 6251 new_space_dominator_ = dominator; |
6247 } | 6252 } |
6248 virtual void PrintDataTo(StringStream* stream) V8_OVERRIDE; | 6253 virtual void PrintDataTo(StringStream* stream) V8_OVERRIDE; |
6249 | 6254 |
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7106 virtual bool IsDeletable() const V8_OVERRIDE { return true; } | 7111 virtual bool IsDeletable() const V8_OVERRIDE { return true; } |
7107 }; | 7112 }; |
7108 | 7113 |
7109 | 7114 |
7110 #undef DECLARE_INSTRUCTION | 7115 #undef DECLARE_INSTRUCTION |
7111 #undef DECLARE_CONCRETE_INSTRUCTION | 7116 #undef DECLARE_CONCRETE_INSTRUCTION |
7112 | 7117 |
7113 } } // namespace v8::internal | 7118 } } // namespace v8::internal |
7114 | 7119 |
7115 #endif // V8_HYDROGEN_INSTRUCTIONS_H_ | 7120 #endif // V8_HYDROGEN_INSTRUCTIONS_H_ |
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