[GHC] #11808: nofib's cryptarithm1 regresses due to deferred inlining of Int's Ord operations

7 Apr 2016


      #11808: nofib's cryptarithm1 regresses due to deferred inlining of Int's Ord
operations
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           Reporter:  bgamari        |             Owner:
               Type:  task           |            Status:  new
           Priority:  highest        |         Milestone:  8.0.1
          Component:  Compiler       |           Version:  8.0.1-rc3
           Keywords:                 |  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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 Commit d1179c4bff6d05cc9e86eee3e2d2cee707983c90
 [[https://perf.haskell.org/ghc/#revision/d1179c4bff6d05cc9e86eee3e2d2cee707983c90|apparently]]
 causes a ~5% regression in runtime in nofib's `cryptarithm1` benchmark.
 Need to work out why.

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Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11808
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