[GHC] #14996: Typed holes are very slow

[GHC]

#14996: Typed holes are very slow
-------------------------------------+-------------------------------------
        Reporter:  simonpj           |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.2.2
      Resolution:  invalid           |             Keywords:  TypedHoles
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #14969, #15037    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by RyanGlScott):

 * status:  new => closed
 * resolution:   => invalid
 * related:   => #14969, #15037


Comment:

 Oops, I accidentally converted #14969 to be about the performance issue
 before seeing this ticket. I think I'll keep #14969 the way it is and
 close this in favor of a new ticket, #15037, about the issue in comment:2

 And yes, to reiterate what monoidal said, you do need to run `1` //twice//
 in GHCi before running `_`, or else it won't be triggered.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14996#comment:5>
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