[GHC] #11795: Performance issues with replicateM_

[GHC]

#11795: Performance issues with replicateM_
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        Reporter:  snoyberg          |                Owner:  snoyberg
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  libraries/base    |              Version:  7.10.3
      Resolution:                    |             Keywords:
Operating System:  MacOS X           |         Architecture:  x86_64
 Type of failure:  Runtime           |  (amd64)
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D2086
       Wiki Page:                    |
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Comment (by simonpj):

 Great. So it inlines bodily, and specialises to the particular call site.
 That is precisely what I speculated in my Phab comment.  So yes, it'd good
 to make a Note in the code which says what my comment says, and points to
 this ticket for more detail.

 I've learned that it's extremely helpful leaving breadcrumbs like this in
 the code, so the next time someone is fiddling with that code, they do so
 in the light of earlier learning.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11795#comment:8>
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