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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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7414 | 7414 |
7415 | 7415 |
7416 static inline void IterateBodyUsingLayoutDescriptor(HeapObject* object, | 7416 static inline void IterateBodyUsingLayoutDescriptor(HeapObject* object, |
7417 int start_offset, | 7417 int start_offset, |
7418 int end_offset, | 7418 int end_offset, |
7419 ObjectVisitor* v) { | 7419 ObjectVisitor* v) { |
7420 DCHECK(FLAG_unbox_double_fields); | 7420 DCHECK(FLAG_unbox_double_fields); |
7421 DCHECK(IsAligned(start_offset, kPointerSize) && | 7421 DCHECK(IsAligned(start_offset, kPointerSize) && |
7422 IsAligned(end_offset, kPointerSize)); | 7422 IsAligned(end_offset, kPointerSize)); |
7423 | 7423 |
7424 InobjectPropertiesHelper helper(object->map()); | 7424 LayoutDescriptorHelper helper(object->map()); |
7425 DCHECK(!helper.all_fields_tagged()); | 7425 DCHECK(!helper.all_fields_tagged()); |
7426 | 7426 |
7427 for (int offset = start_offset; offset < end_offset; offset += kPointerSize) { | 7427 for (int offset = start_offset; offset < end_offset; offset += kPointerSize) { |
7428 // Visit all tagged fields. | 7428 // Visit all tagged fields. |
7429 if (helper.IsTagged(offset)) { | 7429 if (helper.IsTagged(offset)) { |
7430 v->VisitPointer(HeapObject::RawField(object, offset)); | 7430 v->VisitPointer(HeapObject::RawField(object, offset)); |
7431 } | 7431 } |
7432 } | 7432 } |
7433 } | 7433 } |
7434 | 7434 |
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7518 #undef READ_SHORT_FIELD | 7518 #undef READ_SHORT_FIELD |
7519 #undef WRITE_SHORT_FIELD | 7519 #undef WRITE_SHORT_FIELD |
7520 #undef READ_BYTE_FIELD | 7520 #undef READ_BYTE_FIELD |
7521 #undef WRITE_BYTE_FIELD | 7521 #undef WRITE_BYTE_FIELD |
7522 #undef NOBARRIER_READ_BYTE_FIELD | 7522 #undef NOBARRIER_READ_BYTE_FIELD |
7523 #undef NOBARRIER_WRITE_BYTE_FIELD | 7523 #undef NOBARRIER_WRITE_BYTE_FIELD |
7524 | 7524 |
7525 } } // namespace v8::internal | 7525 } } // namespace v8::internal |
7526 | 7526 |
7527 #endif // V8_OBJECTS_INL_H_ | 7527 #endif // V8_OBJECTS_INL_H_ |
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