[GHC] #14610: newtype wrapping of a monadic stack kills performance

[GHC]

#14610: newtype wrapping of a monadic stack kills performance
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        Reporter:  mrkkrp            |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.6.1
       Component:  Compiler          |              Version:  8.2.2
      Resolution:                    |             Keywords:  JoinPoints
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #14620            |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Joachim Breitner <mail@…>):

 In [changeset:"862c59e7bf714e6059392ea401bb0a568c959725/ghc" 862c59e/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="862c59e7bf714e6059392ea401bb0a568c959725"
 Rewrite Note [The polymorphism rule of join points]

 I found the reference to CPS unhelpful, but Simon gave me a good
 explanation in #14610 that I believe is going to be more enlightening
 for future readers.

 Differential Revision: https://phabricator.haskell.org/D4281
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14610#comment:23>
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