[GHC] #8405: experiment with using function-sections for linking (for smaller libs and executables)

[GHC]

#8405: experiment with using function-sections for linking (for smaller libs and
executables)
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        Reporter:  carter            |                   Owner:
            Type:  task              |                  Status:  new
        Priority:  normal            |               Milestone:  7.12.1
       Component:  Compiler          |                 Version:  7.6.3
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by thomie):

 Awesome.

 How about the size of the .a files? With `-split-objs`, `.a` files tend to
 get a factor of 2 to 2.5x larger. This is one of the reasons why a ghc
 installation is as large as it is (~900Mb for me).

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8405#comment:8>
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