[GHC] #14490: TTG Snags

[GHC]

#14490: TTG Snags
-------------------------------------+-------------------------------------
        Reporter:  alanz             |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #14482            |  Differential Rev(s):
       Wiki Page:                    |
  ImplementingTreesThatGrow          |
-------------------------------------+-------------------------------------

Comment (by alanz):

 Initial result: Compiling HsInstances with all the `GhcPs` etc variants
 takes around 90s and 1GB on my machine.

 GHC 8.2.1

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14490#comment:34>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler