[GHC] #11284: Lambda-lifting fails in simple Text example

[GHC]

#11284: Lambda-lifting fails in simple Text example
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.10.3
      Resolution:  duplicate         |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #5945, #11318     |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by simonpj):

 I suppose we didn't have join points 3 yrs ago.  Suppose `$wloop` wasn't a
 join point; would LLF lift it?  I expect so, and I suppose we could find
 out by switching off join points.  (We don't have a way to do that right
 now, alas.)

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11284#comment:20>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler