[GHC] #12470: Move LLVM code generator to LLVM bitcode format

[GHC]

#12470: Move LLVM code generator to LLVM bitcode format
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           Reporter:  bgamari        |             Owner:
               Type:  feature        |            Status:  new
  request                            |
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.0.1
  (LLVM)                             |
           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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 Currently GHC produces LLVM's textual intermediate representation. While
 this is easy to produce, it's not the path recommended by LLVM's
 developers. Instead, they [[http://llvm.org/docs/DeveloperPolicy.html#ir-
 backwards-compatibility|recommend]] that compilers produce LLVM bitcode,
 which they maintain much stronger backwards compatibility guarantees on.

 It seems sensible to move the backend over to this format.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12470>
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