am ff770b5d: am 7cabeca7: Merge "Revert "Revert "Implement rosalloc fast path in assembly for 32 bit arm."""

* commit 'ff770b5d55e56a33a7791bf8d85d0d925e5d4818':
  Revert "Revert "Implement rosalloc fast path in assembly for 32 bit arm.""