[GHC] #13426: compile-time memory-usage regression for DynFlags between GHC 8.0 and GHC 8.2

[GHC]

#13426: compile-time memory-usage regression for DynFlags between GHC 8.0 and GHC
8.2
-------------------------------------+-------------------------------------
        Reporter:  hvr               |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  8.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D3399,
       Wiki Page:                    |  Phab:D3400, Phab:D3421
-------------------------------------+-------------------------------------

Comment (by rwbarton):

 Regarding comment:19: this is only needed for the subsequent change to
 make `coreBindsSize` less strict without introducing new space leaks. It's
 not needed to get the space usage under control in the first place, for
 which Phab:D3421 should be sufficient.

 That said I think it is still worth pursuing that line, I'm just not sure
 about the timing for 8.2.1.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13426#comment:27>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler