461       const uptr RegionIndex = computeRegionId(Region);  in allocateRegion()  local
462       if (RegionIndex < Sci->MinRegionIndex)  in allocateRegion()
463         Sci->MinRegionIndex = RegionIndex;  in allocateRegion()
464       if (RegionIndex > Sci->MaxRegionIndex)  in allocateRegion()
465         Sci->MaxRegionIndex = RegionIndex;  in allocateRegion()
467       PossibleRegions.set(RegionIndex, static_cast<u8>(ClassId + 1U));  in allocateRegion()
908     auto SkipRegion = [this, First, ClassId](uptr RegionIndex) {  in getSizeClassFragmentationInfo()
910       return (PossibleRegions[First + RegionIndex] - 1U) != ClassId;  in getSizeClassFragmentationInfo()
996     auto SkipRegion = [this, First, ClassId](uptr RegionIndex) {
998       return (PossibleRegions[First + RegionIndex] - 1U) != ClassId;
1131       const uptr RegionIndex = (GroupBase - Base) / RegionSize;  in markFreeBlocks()  local
1139         Context.markRangeAsAllCounted(GroupBase, To, GroupBase, RegionIndex,  in markFreeBlocks()
1148                                        RegionIndex, AllocatedGroupSize,  in markFreeBlocks()