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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be | 
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. | 
| 4 // | 4 // | 
| 5 // Review notes: | 5 // Review notes: | 
| 6 // | 6 // | 
| 7 // - The use of macros in these inline functions may seem superfluous | 7 // - The use of macros in these inline functions may seem superfluous | 
| 8 // but it is absolutely needed to make sure gcc generates optimal | 8 // but it is absolutely needed to make sure gcc generates optimal | 
| 9 // code. gcc is not happy when attempting to inline too deep. | 9 // code. gcc is not happy when attempting to inline too deep. | 
| 10 // | 10 // | 
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| 7371 | 7371 | 
| 7372 | 7372 | 
| 7373 template<typename StaticVisitor> | 7373 template<typename StaticVisitor> | 
| 7374 void ExternalTwoByteString::ExternalTwoByteStringIterateBody() { | 7374 void ExternalTwoByteString::ExternalTwoByteStringIterateBody() { | 
| 7375   typedef v8::String::ExternalStringResource Resource; | 7375   typedef v8::String::ExternalStringResource Resource; | 
| 7376   StaticVisitor::VisitExternalTwoByteString( | 7376   StaticVisitor::VisitExternalTwoByteString( | 
| 7377       reinterpret_cast<Resource**>(FIELD_ADDR(this, kResourceOffset))); | 7377       reinterpret_cast<Resource**>(FIELD_ADDR(this, kResourceOffset))); | 
| 7378 } | 7378 } | 
| 7379 | 7379 | 
| 7380 | 7380 | 
| 7381 static void IterateBodyUsingLayoutDescriptor(HeapObject* object, | 7381 static inline void IterateBodyUsingLayoutDescriptor(HeapObject* object, | 
| 7382                                              int start_offset, int end_offset, | 7382                                                     int start_offset, | 
| 7383                                              ObjectVisitor* v) { | 7383                                                     int end_offset, | 
|  | 7384                                                     ObjectVisitor* v) { | 
| 7384   DCHECK(FLAG_unbox_double_fields); | 7385   DCHECK(FLAG_unbox_double_fields); | 
| 7385   DCHECK(IsAligned(start_offset, kPointerSize) && | 7386   DCHECK(IsAligned(start_offset, kPointerSize) && | 
| 7386          IsAligned(end_offset, kPointerSize)); | 7387          IsAligned(end_offset, kPointerSize)); | 
| 7387 | 7388 | 
| 7388   InobjectPropertiesHelper helper(object->map()); | 7389   InobjectPropertiesHelper helper(object->map()); | 
| 7389   DCHECK(!helper.all_fields_tagged()); | 7390   DCHECK(!helper.all_fields_tagged()); | 
| 7390 | 7391 | 
| 7391   for (int offset = start_offset; offset < end_offset; offset += kPointerSize) { | 7392   for (int offset = start_offset; offset < end_offset; offset += kPointerSize) { | 
| 7392     // Visit all tagged fields. | 7393     // Visit all tagged fields. | 
| 7393     if (helper.IsTagged(offset)) { | 7394     if (helper.IsTagged(offset)) { | 
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| 7484 #undef READ_SHORT_FIELD | 7485 #undef READ_SHORT_FIELD | 
| 7485 #undef WRITE_SHORT_FIELD | 7486 #undef WRITE_SHORT_FIELD | 
| 7486 #undef READ_BYTE_FIELD | 7487 #undef READ_BYTE_FIELD | 
| 7487 #undef WRITE_BYTE_FIELD | 7488 #undef WRITE_BYTE_FIELD | 
| 7488 #undef NOBARRIER_READ_BYTE_FIELD | 7489 #undef NOBARRIER_READ_BYTE_FIELD | 
| 7489 #undef NOBARRIER_WRITE_BYTE_FIELD | 7490 #undef NOBARRIER_WRITE_BYTE_FIELD | 
| 7490 | 7491 | 
| 7491 } }  // namespace v8::internal | 7492 } }  // namespace v8::internal | 
| 7492 | 7493 | 
| 7493 #endif  // V8_OBJECTS_INL_H_ | 7494 #endif  // V8_OBJECTS_INL_H_ | 
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