[GHC] #13165: Speed up the RTS hash table

[GHC]

#13165: Speed up the RTS hash table
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        Reporter:  dobenour          |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Runtime System    |              Version:  8.1
      Resolution:                    |             Keywords:  newcomer
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 NoidedSuper):

 Well, I attempted an implementation at
 [https://phabricator.haskell.org/D5073], but sadly the test suite seems to
 break when you run the check (although just building, compiling, and
 running was working fine). I haven't had the chance to look too much at it
 but I'm guessing I have a problem with either deleting or mapping over
 hash tables. I'll work on it some more tomorrow, see if I can fix it. Of
 course, help is always appreciated!

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13165#comment:14>
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