[GHC] #12354: Word foldl' isn't optimized as well as Int foldl'

[GHC]

#12354: Word foldl' isn't optimized as well as Int foldl'
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        Reporter:  kjslag            |                Owner:
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      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:D2376
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"0bd7c4b4240a27d4e26290741394b31b48db7671/ghc" 0bd7c4b/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="0bd7c4b4240a27d4e26290741394b31b48db7671"
 Enum: Ensure that operations on Word fuse

 Test Plan: Validate, verify fusion

 Reviewers: austin, hvr

 Subscribers: thomie

 Differential Revision: https://phabricator.haskell.org/D2376

 GHC Trac Issues: #12354
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12354#comment:7>
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