[GHC] #13564: Why does memory usage increase so much during CoreTidy?

[GHC]

#13564: Why does memory usage increase so much during CoreTidy?
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        Reporter:  rwbarton          |                Owner:  rwbarton
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.1
      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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Changes (by rwbarton):

 * Attachment "ghc-stage2.3.pdf" added.

 heap profile with seqBinds in tidyTopBinds as well

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13564>
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