Merge "Revert "Revert "Assembly TLAB and RegionTLAB allocation fast path for x86""" am: ebe4d215 am: ba07caf0 am: 17908600 am: 96e53ad7 * commit '96e53ad7': Revert "Revert "Assembly TLAB and RegionTLAB allocation fast path for x86"" Change-Id: If315c032ab3e1a82424df271a33a6ddc1513ef1b