[GHC] #13623: join points produce bad code for stream fusion

[GHC]

#13623: join points produce bad code for stream fusion
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        Reporter:  choenerzs         |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  highest           |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  8.2.1-rc1
      Resolution:  fixed             |             Keywords:  JoinPoints
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Runtime           |            Test Case:
  performance bug                    |  perf/should_runt/T13623
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"1126e6942624f4e6578e59b2a28b9848ad9fcea2/ghc" 1126e69/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="1126e6942624f4e6578e59b2a28b9848ad9fcea2"
 testsuite: Fix overflow in T13623 on 32-bit machines

 We simply truncate the result to 32-bits to ensure that the test passed
 under both environments.

 Test Plan: Validate on 32-bit

 Subscribers: thomie, carter

 GHC Trac Issues: #13623

 Differential Revision: https://phabricator.haskell.org/D4615
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13623#comment:15>
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