[GHC] #10124: Simple case analyses generate too many branches

GHC ghc-devs at haskell.org
Wed Mar 4 16:32:31 UTC 2015


#10124: Simple case analyses generate too many branches
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.8.4
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:  #6135,            |  Differential Revisions:
  #9661,#10137                       |
-------------------------------------+-------------------------------------
Changes (by nomeata):

 * related:  #6135, #9661 => #6135, #9661,#10137


Comment:

 I believe that at least some of this can and should be handled in the code
 generator, where the code generation for branching on integers can be
 improved anyways. I describe a possible plan in #10137.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10124#comment:12>
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