[GHC] #14214: Users guide lies about default optimization level

[GHC]

#14214: Users guide lies about default optimization level
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           Reporter:  bgamari        |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  high           |         Milestone:  8.4.1
          Component:  Compiler       |           Version:  8.2.1
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  Documentation
  Unknown/Multiple                   |  bug
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 #14208 points out that the users guide claims that the default
 optimization level is `-O0`. However this apparently isn't true. We should
 decide whether this should be the default and, if so, identify and fix the
 differences.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14214>
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