[GHC] #7622: Unregisterised builds don't support LLVM backend

[GHC]

#7622: Unregisterised builds don't support LLVM backend
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Reporter:  dterei            |          Owner:  dterei          
    Type:  bug               |         Status:  new             
Priority:  normal            |      Component:  Compiler (LLVM) 
 Version:  7.7               |       Keywords:                  
      Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
 Failure:  None/Unknown      |      Blockedby:                  
Blocking:                    |        Related:                  
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 The LLVM backend should work in unregisterised mode. Apparently the driver
 isn't allowing it to be chosen though. Need to investigate this claim and
 allow LLVM again if true.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7622>
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