[GHC] #13604: ghci no longer loads dynamic .o files by default if they were built with -O

[GHC]

#13604: ghci no longer loads dynamic .o files by default if they were built with -O
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        Reporter:  George            |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.4.1
       Component:  GHCi              |              Version:  8.2.1-rc1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D3514
       Wiki Page:                    |
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Comment (by elaforge):

 By the way, if the fix is really put off until 8.4.1, it means I'll have
 to skip a whole major version!  This issue is a show stopper for my
 program, and I'd expect for any program that uses the GHC API for a REPL
 (maybe not that many, but still, it's a compelling GHC feature for me).
 It also makes interactive testing really slow, which for me makes it a
 show stopper for my style of development as well.

 If people like the "ghci allows but ignores -fhpc and -O" idea, I'd be
 happy to give the implementation a shot.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13604#comment:19>
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