[GHC] #8457: -ffull-laziness does more harm than good

GHC ghc-devs at haskell.org
Thu Sep 29 06:35:59 UTC 2016


#8457: -ffull-laziness does more harm than good
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        Reporter:  errge             |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.7
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #9520, #12620     |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by edsko):

 * related:   => #9520, #12620


Comment:

 Just published a blog post on the perils of full laziness when using
 conduit (see also #9520); it might be relevant to this ticket: http://www
 .well-typed.com/blog/2016/09/sharing-conduit/ . See also #12620 for a
 recent alternative proposal to limit the scope of full laziness.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8457#comment:15>
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