Index: src/type-feedback-vector-inl.h |
diff --git a/src/type-feedback-vector-inl.h b/src/type-feedback-vector-inl.h |
index 7fa51d802ada52e90ba3ebd4d2189ce0fc036b14..4d1c345e6800f6e627ada4db940b21057003e244 100644 |
--- a/src/type-feedback-vector-inl.h |
+++ b/src/type-feedback-vector-inl.h |
@@ -10,11 +10,118 @@ |
namespace v8 { |
namespace internal { |
+// static |
+TypeFeedbackVector* TypeFeedbackVector::cast(Object* obj) { |
+ DCHECK(obj->IsTypeFeedbackVector()); |
+ return reinterpret_cast<TypeFeedbackVector*>(obj); |
+} |
+ |
+ |
+int TypeFeedbackVector::first_ic_slot_index() const { |
+ DCHECK(length() >= kReservedIndexCount); |
+ return Smi::cast(get(kFirstICSlotIndex))->value(); |
+} |
+ |
+ |
+int TypeFeedbackVector::ic_with_type_info_count() { |
+ return length() > 0 ? Smi::cast(get(kWithTypesIndex))->value() : 0; |
+} |
+ |
+ |
+void TypeFeedbackVector::change_ic_with_type_info_count(int delta) { |
+ if (delta == 0) return; |
+ int value = ic_with_type_info_count() + delta; |
+ // Could go negative because of the debugger. |
+ if (value >= 0) { |
+ set(kWithTypesIndex, Smi::FromInt(value)); |
+ } |
+} |
+ |
+ |
+int TypeFeedbackVector::ic_generic_count() { |
+ return length() > 0 ? Smi::cast(get(kGenericCountIndex))->value() : 0; |
+} |
+ |
+ |
+void TypeFeedbackVector::change_ic_generic_count(int delta) { |
+ if (delta == 0) return; |
+ int value = ic_generic_count() + delta; |
+ if (value >= 0) { |
+ set(kGenericCountIndex, Smi::FromInt(value)); |
+ } |
+} |
+ |
+ |
+int TypeFeedbackVector::Slots() const { |
+ if (length() == 0) return 0; |
+ return Max( |
+ 0, first_ic_slot_index() - ic_metadata_length() - kReservedIndexCount); |
+} |
+ |
+ |
+int TypeFeedbackVector::ICSlots() const { |
+ if (length() == 0) return 0; |
+ return (length() - first_ic_slot_index()) / elements_per_ic_slot(); |
+} |
+ |
+ |
int TypeFeedbackVector::ic_metadata_length() const { |
return VectorICComputer::word_count(ICSlots()); |
} |
+// Conversion from a slot or ic slot to an integer index to the underlying |
+// array. |
+int TypeFeedbackVector::GetIndex(FeedbackVectorSlot slot) const { |
+ DCHECK(slot.ToInt() < first_ic_slot_index()); |
+ return kReservedIndexCount + ic_metadata_length() + slot.ToInt(); |
+} |
+ |
+ |
+int TypeFeedbackVector::GetIndex(FeedbackVectorICSlot slot) const { |
+ int first_ic_slot = first_ic_slot_index(); |
+ DCHECK(slot.ToInt() < ICSlots()); |
+ return first_ic_slot + slot.ToInt() * elements_per_ic_slot(); |
+} |
+ |
+ |
+// Conversion from an integer index to either a slot or an ic slot. The caller |
+// should know what kind she expects. |
+FeedbackVectorSlot TypeFeedbackVector::ToSlot(int index) const { |
+ DCHECK(index >= kReservedIndexCount && index < first_ic_slot_index()); |
+ return FeedbackVectorSlot(index - ic_metadata_length() - kReservedIndexCount); |
+} |
+ |
+ |
+FeedbackVectorICSlot TypeFeedbackVector::ToICSlot(int index) const { |
+ DCHECK(index >= first_ic_slot_index() && index < length()); |
+ int ic_slot = (index - first_ic_slot_index()) / elements_per_ic_slot(); |
+ return FeedbackVectorICSlot(ic_slot); |
+} |
+ |
+ |
+Object* TypeFeedbackVector::Get(FeedbackVectorSlot slot) const { |
+ return get(GetIndex(slot)); |
+} |
+ |
+ |
+void TypeFeedbackVector::Set(FeedbackVectorSlot slot, Object* value, |
+ WriteBarrierMode mode) { |
+ set(GetIndex(slot), value, mode); |
+} |
+ |
+ |
+Object* TypeFeedbackVector::Get(FeedbackVectorICSlot slot) const { |
+ return get(GetIndex(slot)); |
+} |
+ |
+ |
+void TypeFeedbackVector::Set(FeedbackVectorICSlot slot, Object* value, |
+ WriteBarrierMode mode) { |
+ set(GetIndex(slot), value, mode); |
+} |
+ |
+ |
Handle<Object> TypeFeedbackVector::UninitializedSentinel(Isolate* isolate) { |
return isolate->factory()->uninitialized_symbol(); |
} |
@@ -33,6 +140,32 @@ Handle<Object> TypeFeedbackVector::PremonomorphicSentinel(Isolate* isolate) { |
Object* TypeFeedbackVector::RawUninitializedSentinel(Heap* heap) { |
return heap->uninitialized_symbol(); |
} |
+ |
+ |
+Object* FeedbackNexus::GetFeedback() const { return vector()->Get(slot()); } |
+ |
+ |
+Object* FeedbackNexus::GetFeedbackExtra() const { |
+ DCHECK(TypeFeedbackVector::elements_per_ic_slot() > 1); |
+ int extra_index = vector()->GetIndex(slot()) + 1; |
+ return vector()->get(extra_index); |
+} |
+ |
+ |
+void FeedbackNexus::SetFeedback(Object* feedback, WriteBarrierMode mode) { |
+ vector()->Set(slot(), feedback, mode); |
+} |
+ |
+ |
+void FeedbackNexus::SetFeedbackExtra(Object* feedback_extra, |
+ WriteBarrierMode mode) { |
+ DCHECK(TypeFeedbackVector::elements_per_ic_slot() > 1); |
+ int index = vector()->GetIndex(slot()) + 1; |
+ vector()->set(index, feedback_extra, mode); |
+} |
+ |
+ |
+Isolate* FeedbackNexus::GetIsolate() const { return vector()->GetIsolate(); } |
} |
} // namespace v8::internal |