[GHC] #15103: Speed optimizations for elimCommonBlocks

[GHC]

#15103: Speed optimizations for elimCommonBlocks
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        Reporter:  AndreasK          |                Owner:  AndreasK
            Type:  task              |               Status:  patch
        Priority:  normal            |            Milestone:  8.6.1
       Component:  Compiler          |              Version:  8.5
      Resolution:                    |             Keywords:  CodeGen
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4597
       Wiki Page:                    |
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Comment (by simonpj):

 What is the perf impact of this optimisation, if any?   (I think the goal
 is to improve compile times, right?  Not run-time.)

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15103#comment:7>
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