[GHC] #13080: Constant values are not floated out of the loop

[GHC]

#13080: Constant values are not floated out of the loop
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        Reporter:  Feuerbach         |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Feuerbach):

 I also wanted to see what difference the state hack makes, but couldn't
 find `-fno-stack-hack` in ghc 8 user's guide. I thought that perhaps it
 was replaced by a less hacky optimization in ghc 8.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13080#comment:2>
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