[GHC] #11953: Export Word32#, Word64# on all architectures

[GHC]

#11953: Export Word32#, Word64# on all architectures
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        Reporter:  bgamari           |                Owner:
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  7.10.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by carter):

 Would also perhaps be worth considering adding a WordNative# and
 associated lifted sibling that is explicitly guaranteed to match native
 pointer / max addressable virtual memory? For ghc that would always been
 one of Word32 or Word64 sized, whichever is currently also called Word,
 but that's only a result of ghc specific rts and compilation strategy
 choices  rather than being part of the language standard. A large number
 of current libraries make that assumption in their data structure rep and
 it's not guaranteed to be true at all by any specification currently.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11953#comment:2>
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