[GHC] #9132: takeWhile&C. still not fusible

GHC ghc-devs at haskell.org
Mon Jun 9 08:39:50 UTC 2014


#9132: takeWhile&C. still not fusible
-------------------------------------+-------------------------------------
        Reporter:  Blaisorblade      |            Owner:  skeuchel
            Type:  bug               |           Status:  patch
        Priority:  normal            |        Milestone:
       Component:  libraries/base    |          Version:  7.8.2
      Resolution:                    |         Keywords:  fusion
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  Runtime           |       Difficulty:  Moderate (less
  performance bug                    |  than a day)
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
-------------------------------------+-------------------------------------

Comment (by simonpj):

 Good work.
  * Could someone post the nofib results?
  * Like Blaisorblade I don't understand why CSE doesn't catch the
 duplicate redex.  Can someone post the result of `-dverbose-core2core
 -ddump-inlinings`?

 Microsoft's network won't me see the hpaste/lpaste site at the moment
 (investigating) so I can't see anything you post there at the moment.

 Simon

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9132#comment:17>
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