[GHC] #14003: Allow more worker arguments in SpecConstr

GHC ghc-devs at haskell.org
Fri Jul 21 02:29:27 UTC 2017


#14003: Allow more worker arguments in SpecConstr
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        Reporter:  choenerzs         |                Owner:  (none)
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:  8.2.2
       Component:  Compiler          |              Version:  8.2.1-rc3
      Resolution:                    |             Keywords:  JoinPoints,
                                     |  Fusion
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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Comment (by bgamari):

 In general your code will perform pretty poorly with or without
 worker/wrapper if you have >100 arguments as this is well beyond what we
 can accommodate in physical registers. Of course, I'm happy to be proven
 wrong: do you have a concrete example of a program with this many
 arguments which you think should optimize well?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14003#comment:1>
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