[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:  patch
        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):  Phab:D3516
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"5c602d2228d28530621cc6c94fbb736b13f474fb/ghc"
 5c602d22/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="5c602d2228d28530621cc6c94fbb736b13f474fb"
 Avoid excessive space usage from unfoldings in CoreTidy

 Test Plan: validate

 Reviewers: austin, bgamari

 Reviewed By: bgamari

 Subscribers: thomie

 GHC Trac Issues: #13564

 Differential Revision: https://phabricator.haskell.org/D3516
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13564#comment:5>
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