[GHC] #13225: Fannkuch-redux time regression from join point patch

[GHC]

#13225: Fannkuch-redux time regression from join point patch
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           Reporter:  dfeuer         |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:  8.4.1
          Component:  Compiler       |           Version:  8.1
           Keywords:  JoinPoints     |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  Runtime
  Unknown/Multiple                   |  performance bug
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 According to
 [https://perf.haskell.org/ghc/#revision/8d5cf8bf584fd4849917c29d82dcf46ee75dd035
 Gipeda], the join point rework caused an impressive 99.9% drop in
 allocations in fannkuch-redux, but an 8.57% increase in its run-time.
 Looking at the graph, it appears that this is not just noise.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13225>
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