[GHC] #11707: Don't desugar large lists with build

[GHC]

#11707: Don't desugar large lists with build
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        Reporter:  bgamari           |                Owner:
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.10.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D2007
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"b735e99d79448bd7f416b35d8b0473d8eb5271f1/ghc"
 b735e99d/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="b735e99d79448bd7f416b35d8b0473d8eb5271f1"
 DsExpr: Don't build/foldr huge lists

 Desugaring long lists with build trades large static data for large
 code, which is likely a poor trade-off. See #11707.

 Test Plan: Validate, nofib

 Reviewers: simonpj, austin

 Reviewed By: austin

 Subscribers: thomie

 Differential Revision: https://phabricator.haskell.org/D2007

 GHC Trac Issues: #11707
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11707#comment:10>
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