[GHC] #9020: Massive blowup of code size on trivial program

GHC ghc-devs at haskell.org
Mon Jul 31 13:00:13 UTC 2017


#9020: Massive blowup of code size on trivial program
-------------------------------------+-------------------------------------
        Reporter:  simonpj           |                Owner:  nomeata
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.8.2
      Resolution:                    |             Keywords:  Inlining
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Compile-time      |            Test Case:
  performance bug                    |  perf/compiler/T9020
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D851
       Wiki Page:                    |
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Comment (by dfeuer):

 What's it going to take to put this to bed? It sounds like comment:6
 suggests there may still be something to be done despite the early inline
 patch? It's not clear to me just what. For the record, this test case no
 longer seems to be in the test suite, but compiling something similar
 dropped from 5.5s in 7.8 to 1s in 7.10 and 8.0 to 0.8s in HEAD.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9020#comment:14>
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