[GHC] #10528: compile time performance regression with OverloadedStrings and Text

[GHC]

#10528: compile time performance regression with OverloadedStrings and Text
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        Reporter:  jakewheat         |                   Owner:  bgamari
            Type:  bug               |                  Status:  new
        Priority:  high              |               Milestone:  7.10.3
       Component:  Compiler          |                 Version:  7.10.2-rc2
      Resolution:                    |                Keywords:
Operating System:  Linux             |            Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  performance bug                    |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by bgamari):

 The program gets substantially larger after the first simplifier pass in
 7.10.2: while in 7.10.1 it always stays around 1000 terms or less, in
 7.10.2 it grows to 40000 terms at its peak. The issue is reproducible on
 the `master` branch as well.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10528#comment:5>
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