[GHC] #10528: compile time performance regression with OverloadedStrings and Text

[GHC]

#10528: compile time performance regression with OverloadedStrings and Text
-------------------------------------+-------------------------------------
        Reporter:  jakewheat         |                   Owner:  bgamari
            Type:  bug               |                  Status:  merge
        Priority:  high              |               Milestone:  7.10.3
       Component:  Compiler          |                 Version:  7.10.2-rc2
      Resolution:                    |                Keywords:
Operating System:  Linux             |            Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  performance bug                    |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by jakewheat):

 I tried with text-1.2.1.2:

 with ghc 7.10.1:
 {{{
 real    1m20.054s
 user    2m3.324s
 sys     0m51.684s
 }}}

 with ghc 7.10.2:
 {{{
 real    10m32.169s
 user    13m39.756s
 sys     4m18.856s
 }}}

 It is still slow - is this expected?

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10528#comment:19>
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