[GHC] #16111: Inconsistent behavior of Data.Bits.shiftL with different optimization levels and -fllvm

[GHC]

#16111: Inconsistent behavior of Data.Bits.shiftL with different optimization
levels and -fllvm
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        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  infoneeded
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.6.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect result  |  Unknown/Multiple
  at runtime                         |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |  https://gitlab.haskell.org/ghc/ghc/merge_requests/113
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Comment (by harpocrates):

 Test cases based on the Trac ticket sounds like a good idea. I'm not sure
 why they didn't make it into the initial MR... Unless you do it sooner, I
 can address that tomorrow.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16111#comment:10>
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