[GHC] #8041: Extraction of Uniques is in some places done inefficiently

[GHC]

#8041: Extraction of Uniques is in some places done inefficiently
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        Reporter:  parcs             |            Owner:
            Type:  bug               |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  Compiler          |          Version:  7.6.3
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by parcs):

 Patch to GHC and testsuite attached. I successfully bootstrapped GHC with
 this commit and ran the FAST testsuite against it. I encountered two other
 testsuite failures that seem unrelated to this commit:

 {{{
    ../../libraries/process/tests  process007 [bad stdout] (normal)
    perf/compiler                  T3064 [stat too good] (normal)
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8041#comment:1>
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