[GHC] #9136: Constant folding in Core could be better

[GHC]

#9136: Constant folding in Core could be better
--------------------------------------------+------------------------------
        Reporter:  simonpj                  |            Owner:  nomeata
            Type:  bug                      |           Status:  new
        Priority:  normal                   |        Milestone:
       Component:  Compiler                 |          Version:  7.8.2
      Resolution:                           |         Keywords:
Operating System:  Unknown/Multiple         |     Architecture:
 Type of failure:  Runtime performance bug  |  Unknown/Multiple
       Test Case:                           |       Difficulty:  Unknown
        Blocking:                           |       Blocked By:
                                            |  Related Tickets:
--------------------------------------------+------------------------------

Comment (by nomeata):

 As long as you do it on types that wrap around (like `Int#` and `Word#`)
 or are unbounded (`Integer`): No, I don’t think so. Also, if there are any
 issues, I assume they would already be present in the existing constant
 folding code.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9136#comment:9>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler