[GHC] #14272: GHC goes out of memory while compiling simple program with optimizations

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Mon Sep 25 12:53:16 UTC 2017


#14272: GHC goes out of memory while compiling simple program with optimizations
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        Reporter:  39aldo39          |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.10.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by bgamari):

 It seems like things go off the rails during the core-to-core phase,
 {{{
 $ ghc hi.hs -O -v3
 ...
 *** Worker Wrapper binds [Main]:
 Result size of Worker Wrapper binds
   = {terms: 221, types: 143, coercions: 17, joins: 0/7}
 !!! Worker Wrapper binds [Main]: finished in 0.25 milliseconds, allocated
 0.166 megabytes
 *** Simplifier [Main]:
 Result size of Simplifier iteration=1
   = {terms: 227, types: 138, coercions: 17, joins: 1/3}
 ghc: Out of memory
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14272#comment:5>
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