[GHC] #8609: Clean up block allocator

[GHC]

#8609: Clean up block allocator
-------------------------------------+-------------------------------------
        Reporter:  ezyang            |            Owner:  ezyang
            Type:  bug               |           Status:  new
        Priority:  low               |        Milestone:
       Component:  Runtime System    |          Version:  7.7
      Resolution:                    |         Keywords:  patch
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  Runtime           |       Difficulty:  Easy (less than 1
  performance bug                    |  hour)
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
-------------------------------------+-------------------------------------

Comment (by Edward Z. Yang <ezyang@…>):

 In [changeset:"38d17a0cdfee64cc73537e7bb96eb2f25df9ec92/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="38d17a0cdfee64cc73537e7bb96eb2f25df9ec92"
 Clean up block allocator, fixes #8609

 Signed-off-by: Edward Z. Yang <ezyang at cs.stanford.edu>
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8609#comment:2>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler