[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 Simon Marlow <marlowsd@…>):

 In [changeset:"05fcc3331622995015ccba17ae333b9a0fc9bb77/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="05fcc3331622995015ccba17ae333b9a0fc9bb77"
 Rts: Reuse scavenge_small_bitmap (#8742)

 The function was inlined at two places already. And the function is
 having the STATIC_INLINE annotation, so the assembly output should.
 be the same.

 To convince myself, I did diff the output of the object files before
 and after the patch and they matched on my 64-bit Ubuntu 13.10 machine,
 running gcc 4.8.1-10ubuntu9.

 Also, I had to move scavenge_small_bitmap up a bit since it's not in any
 .h-file.

 While I was at it, I also applied the analogous patch for Compact.c.
 Though I had to write `thread_small_bitmap` instead of just moving it.
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8742#comment:18>
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