[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
-------------------------------------+-------------------------------------
        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  merge
        Priority:  highest           |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  8.1
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:  T13536
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D3437
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by nomeata):

 Allright. I doubt it will pull its weight (allocation tests tend to slowly
 nudge out of the window, then require manual adjustment of the numbers),
 given that the existing test is more precise anyways, but here it is.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13536#comment:29>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler