[GHC] #9583: Simplifier ticks exhausted while compiling Cabal HEAD

[GHC]

#9583: Simplifier ticks exhausted while compiling Cabal HEAD
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              Reporter:  ezyang      |            Owner:
                  Type:  bug         |           Status:  new
              Priority:  highest     |        Milestone:
             Component:  Compiler    |          Version:  7.9
            Resolution:              |         Keywords:
      Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple                   |       Difficulty:  Unknown
       Type of failure:  Compile-    |       Blocked By:
  time crash                         |  Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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Comment (by ezyang):

 Bisection finished, the bad commit is this one:

 {{{
 b9e49d3e9580e13d89efd1f779cb76f610e0d6e0 is the first bad commit
 [4/1912]
 commit b9e49d3e9580e13d89efd1f779cb76f610e0d6e0
 Author: Simon Peyton Jones <simonpj at microsoft.com>
 Date:   Tue May 13 13:10:26 2014 +0100

     Add -fspecialise-aggressively

     This flag specialises any imported overloaded function that has an
     unfolding, whether or not it was marked INLINEABLE.

     We get a lot of orphan SPEC rules as a result, but that doesn't matter
     provided we don't treat orphan auto-generated rules as causing the
 module
     itself to be an orphan module.  See Note [Orphans and auto-generated
 rules]
     in MkIface.
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9583#comment:8>
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