[GHC] #14124: add shrink prim-op for other array type

[GHC]

#14124: add shrink prim-op for other array type
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           Reporter:  winter         |             Owner:  (none)
               Type:  feature        |            Status:  new
  request                            |
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.2.1
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 This issue arised in the recently PR to bring unified array interface to
 primitive: https://github.com/haskell/primitive/pull/64 . In that issue
 andrewthad ask if we want to keep `shrikArr` API. My guts feels that it's
 possible for other type of array as well since it's just the same closure
 overwrite thing. So i'm asking for adding such prim-op here.

 I suppose we should provide `getSizeOfXXX` prim-op which consume a state
 token for other array type as well since the array size is not referential
 transparent now.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14124>
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