Merge "Revert "Revert "Assembly TLAB and RegionTLAB allocation fast path for x86""" am: ebe4d215 am: ba07caf0 am: 17908600 * commit '17908600': Revert "Revert "Assembly TLAB and RegionTLAB allocation fast path for x86"" Change-Id: I7f59626573a7e8960d00383d365e4bb44f11090f