[GHC] #11179: Allow plugins to access "dead code"

[GHC]

#11179: Allow plugins to access "dead code"
-------------------------------------+-------------------------------------
        Reporter:  lerkok            |                Owner:
            Type:  feature request   |               Status:  patch
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.10.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D3073
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by nomeata):

 * status:  new => patch
 * differential:   => Phab:D3073


Comment:

 Done it. Also had to make sure no binders are maked as `Dead`. See
 Phab:D3073.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11179#comment:10>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler