[GHC] #11720: pureMD5: Simplifier ticks exhausted

[GHC]

#11720: pureMD5: Simplifier ticks exhausted
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           Reporter:  trommler       |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.0.1-rc2
           Keywords:                 |  Operating System:  Linux
       Architecture:                 |   Type of failure:  Compile-time
  Unknown/Multiple                   |  crash
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 GHC panics with simplifier ticks exhausted on powerpc, powerpc64, and
 powerpc64le compiling pureMD5:
 {{{
 [   43s] [1 of 1] Compiling Data.Digest.Pure.MD5 (
 Data/Digest/Pure/MD5.hs, dist/build/Data/Digest/Pure/MD5.o )
 [...]
 [   46s] ghc: panic! (the 'impossible' happened)
 [   46s]   (GHC version 8.0.0.20160204 for powerpc64le-unknown-linux):
 [   46s]        Simplifier ticks exhausted
 [   46s]   When trying UnfoldingDone $
 [   46s]   To increase the limit, use -fsimpl-tick-factor=N (default 100)
 [   46s]   If you need to do this, let GHC HQ know, and what factor you
 needed
 [   46s]   To see detailed counts use -ddump-simpl-stats
 [   46s]   Total ticks: 168807
 }}}

 pureMD5 compiles on i586 and x86_64.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11720>
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