[GHC] #8885: Add inline versions of clone array primops

[GHC]

#8885: Add inline versions of clone array primops
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        Reporter:  tibbe             |            Owner:  simonmar
            Type:  feature request   |           Status:  patch
        Priority:  normal            |        Milestone:
       Component:  Compiler          |          Version:  7.9
      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 tibbe):

 Replying to [comment:5 simonmar]:
 > So we don't know how much of the speed increase is due to fixing the
 bug, and how much is due to inlining the array alloc.  Still, it's
 probably better to inline the array alloc.

 Right. Is the bug in the implementation of `allocate` or in the
 implementation of the primops? If it's in the primops this bug exists in
 at least `stg_newArrayzh` as well, as I stole the allocation code from
 there. If you let me know when the bug is fixed, I will rerun the
 benchmark.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8885#comment:6>
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