[GHC] #13604: regression in ghc 8.2.1-rc1 (8.2.0.20170404)

[GHC]

#13604: regression in ghc 8.2.1-rc1 (8.2.0.20170404)
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        Reporter:  George            |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       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):
       Wiki Page:                    |
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Comment (by ezyang):

 Makes sense: GHCi asks for no optimization, but the object files are
 optimized, so GHCi has no choice but to reinterpret the files.

 It would be an easy matter to revert this patch, but if we also want to
 keep #10923 fixed, we will need to have a discussion about what the
 intended semantics here are.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13604#comment:7>
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