[GHC] #12626: Remove redundant type applications in Core

[GHC]

#12626: Remove redundant type applications in Core
-------------------------------------+-------------------------------------
           Reporter:  nomeata        |             Owner:
               Type:  feature        |            Status:  new
  request                            |
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.0.1
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 This ticket is a fork for #12618, which proposes to add saturated data
 constructor applications to Core with the purpose of omitting redundant
 type applications (think `(,)`), and explores generalizing the idea to any
 application.

 Below are my comments to that ticket, which I delete there, to make it
 less noisy (I got excited on the travel back from ICFP and spammed it too
 much).

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12626>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler