[GHC] #13344: Core string literal patch regresses compiler performance considerably

[GHC]

#13344: Core string literal patch regresses compiler performance considerably
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        Reporter:  bgamari           |                Owner:  bgamari
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.2.1
       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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Comment (by simonpj):

 OK done
 {{{
 commit 9304df5230a7a29d3e992916d133e462b854e55f
 Author: Simon Peyton Jones <simonpj at microsoft.com>
 Date:   Fri Mar 3 11:00:04 2017 +0000

     Fix CSE (again) on literal strings

     Fixes Trac #13367.  See Note [Take care with literal strings]
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13344#comment:25>
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