[GHC] #10706: Make -fcpr-off a dynamic flag

[GHC]

#10706: Make -fcpr-off a dynamic flag
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        Reporter:  darchon           |                   Owner:  darchon
            Type:  feature request   |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.11
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:  Phab:D1110
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Comment (by darchon):

 Ah, yes, I forgot to mention that. Indeed I use GHC as a library, I turn
 on/off specific optimisations: [https://github.com/clash-lang/clash-
 compiler/blob/master/clash-ghc/src-ghc/CLaSH/GHC/LoadModules.hs#L179]

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10706#comment:5>
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