[GHC] #13395: 3x slowdown on GHC HEAD with file containing lots of overloaded string literals

[GHC]

#13395: 3x slowdown on GHC HEAD with file containing lots of overloaded string
literals
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        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  8.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by simonpj):

 That's bad!  But it's '''so''' egregiously bad that surely it ought not to
 be hard to find where the time is going!

 Ben, Reid, David: might one of you look?  If we can fix this we may fix
 other less-egregious cases.

 Simon

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13395#comment:1>
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