[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:  normal            |            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):

 As a suplement: it is related to optimization. I usually use -O2, but
 effect is present also with -O2. With -O0 on GHC 8.0.2 there is no speed-
 up in binarized version. Program compiled with GHC 8.2.2 with -O0
 crashes(!)

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14980#comment:1>
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