[GHC] #7942: aarch64 support in ghc

[GHC]

#7942: aarch64 support in ghc
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        Reporter:  jcapik                   |            Owner:  kgardas
            Type:  feature request          |           Status:  new
        Priority:  normal                   |        Milestone:  7.10.1
       Component:  Compiler                 |          Version:  7.6.3
      Resolution:                           |         Keywords:
Operating System:  Linux                    |     Architecture:  arm
 Type of failure:  GHC doesn't work at all  |       Difficulty:  Unknown
       Test Case:                           |       Blocked By:  7623
        Blocking:                           |  Related Tickets:
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Comment (by carter):

 sounds reasonable. Will the arm 32 bit ghc calling convention make sense
 for AArch64? We may need to get a patch into llvm before having a distinct
 aarch64 abi. (and we shoudl probably do some pretty thorough benchmarking
 before picking any such ABI)

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7942#comment:13>
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