[GHC] #8742: Reuse scavenge_small_bitmap

[GHC]

#8742: Reuse scavenge_small_bitmap
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        Reporter:  Tarrasch          |            Owner:  Tarrasch
            Type:  task              |           Status:  patch
        Priority:  lowest            |        Milestone:  7.10.1
       Component:  Runtime System    |          Version:  7.6.3
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by Tarrasch):

 Hi again,

 So I added two patches now. One that changes some types of the `size`
 variable to `StgWord`. This one will naturally affect the assembly. But
 the second patch which does the code reuse doesn't change the affected
 object file.


 ----


 For my own reference later: https://gist.github.com/Tarrasch/8976269

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8742#comment:15>
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