[GHC] #9777: -msse flag could be handled better by the driver

[GHC]

#9777: -msse flag could be handled better by the driver
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              Reporter:  jstolarek   |            Owner:  dredozubov
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:
             Component:  Driver      |          Version:  7.9
            Resolution:              |         Keywords:  newcomer
      Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple                   |       Difficulty:  Moderate (less
       Type of failure:  Other       |  than a day)
             Test Case:              |       Blocked By:
              Blocking:              |  Related Tickets:  #8404
Differential Revisions:              |
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Comment (by dredozubov):

 I've added a simple type to restrict sse versions to major ones and
 4.2(it's the only not *.0 version that've been explicitly checked in
 sources afaik). I'm not so sure if the naming is right on.

 > A direct consequence of above definition is that bash command-line auto-
 completion does not suggest -msse4.2 flag.
 Probably it will work better with --show-options if separate flags will be
 used(such as -msse2/-msse4 etc).

 Please advice and don't bash me too hard, it's my first attempt to work
 with ghc. :)

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9777#comment:5>
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