[GHC] #14980: Runtime performance regression with binary operations on vectors

[GHC]

#14980: Runtime performance regression with binary operations on vectors
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        Reporter:  ttylec            |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:
       Component:  Compiler          |              Version:  8.2.2
      Resolution:                    |             Keywords:  vector
                                     |  bitwise operations
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by ttylec):

 It came to my mind that different stack snapshots could bring different
 `vector` version along GHC. But that's not the case, both have 0.12.0.1.

 Please let me know if I can be of any assistance. I tried to debug it more
 but I have no CS background (I am mathematical physicist) so you need to
 treat me as a newbie.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14980#comment:3>
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