[GHC] #14691: Replace EvTerm with CoreExpr

[GHC]

#14691: Replace EvTerm with CoreExpr
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        Reporter:  nomeata           |                Owner:  (none)
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  8.3
  checker)                           |
      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 nomeata):

 Is it correct that the `evVarsOfTerm` are those free variables of the
 expression for which `isEvVar` is true, i.e.
 {{{
 evVarsOfTerm evExpr = filter isEvVar (exprFreeVars (dsEvTerm evExpr))
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14691#comment:1>
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