419     MarkBit mark_bit = Marking::MarkBitFrom(obj);  in VerifyMarkbitsAreClean()  local
420     CHECK(Marking::IsWhite(mark_bit));  in VerifyMarkbitsAreClean()
1168     MarkBit mark_bit = Marking::MarkBitFrom(object);  in INLINE()  local
1169     if (Marking::IsWhite(mark_bit)) {  in INLINE()
1170       heap->mark_compact_collector()->SetMark(object, mark_bit);  in INLINE()
1425     MarkBit mark_bit = Marking::MarkBitFrom(object);  in MarkObjectByPointer()  local
1426     if (Marking::IsBlackOrGrey(mark_bit)) return;  in MarkObjectByPointer()
1430     collector_->SetMark(object, mark_bit);  in MarkObjectByPointer()
1490     MarkBit mark_bit = Marking::MarkBitFrom(HeapObject::cast(object));  in RetainAs()  local
1491     DCHECK(!Marking::IsGrey(mark_bit));  in RetainAs()
1492     if (Marking::IsBlack(mark_bit)) {  in RetainAs()
1805   MarkBit mark_bit = Marking::MarkBitFrom(site);  in MarkAllocationSite()  local
1806   SetMark(site, mark_bit);  in MarkAllocationSite()
3453     MarkBit mark_bit = Marking::MarkBitFrom(code);  in InvalidateCode()  local
3454     if (Marking::IsWhite(mark_bit)) return;  in InvalidateCode()
4068     MarkBit mark_bit = Marking::MarkBitFrom(host);  in RecordCodeTargetPatch()  local
4069     if (Marking::IsBlack(mark_bit)) {  in RecordCodeTargetPatch()