[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):

 >  Yes, but then you said "..I would have expected that tcLookup :: Name
 -> TcM TcTyThing (no Global in the name) would consult the local
 environment. ... somehow did not help"

 yes, but I was not using it in all the places I should have – that
 bizzarness was simply a mistake by me, sorry for the confusion.

 About `$tcArithException :: TyCon` – this value lives in `GHC.Exception`,
 but obviously it is not present in the Haskell source. Which phase is
 responsible for synthesizing these values? It seems that they are
 synthesized and added after `TcInteract` resolves the `Typeable`
 constraints (or, if they are created earlier, they are not added to the
 type checker’s local environment).

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14691#comment:18>
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