[GHC] #13536: Program which terminates instantly in GHC 8.0.2 runs for minutes with 8.2.1

[GHC]

#13536: Program which terminates instantly in GHC 8.0.2 runs for minutes with 8.2.1
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        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  patch
        Priority:  highest           |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  8.1
      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:D3437
       Wiki Page:                    |
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Changes (by nomeata):

 * status:  new => patch
 * differential:   => Phab:D3437


Comment:

 Ok, did it, and also added a test case for the problem we fixed. I put it
 up at Phab:D3437.

 I did not implement what’s suggested in comment:15. Can you open a new
 ticket for that?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13536#comment:18>
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