[GHC] #13745: Investigate compile-time regressions in regex-tdfa-1.2.2

[GHC]

#13745: Investigate compile-time regressions in regex-tdfa-1.2.2
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        Reporter:  bgamari           |                Owner:  (none)
            Type:  task              |               Status:  new
        Priority:  high              |            Milestone:  8.2.2
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by dfeuer):

 In "Improve SetLevels for join points", everything is fine until liberate
 case. With the previous commit, this produces

 34,318 terms, 54,571 types, 3,409 coercions, and 456/760 joins.

 With the SetLevels commit, this goes up to

 57,468 terms, 83,821 types, 3,439 coercions, and 856/1,310 joins.

 It never makes up for that.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13745#comment:9>
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