[GHC] #16084: Improve link times on Windows

[GHC]

#16084: Improve link times on Windows
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        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  upstream
        Priority:  high              |            Milestone:
       Component:  Compiler          |              Version:  8.6.3
      Resolution:                    |             Keywords:
Operating System:  Windows           |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by bgamari):

 Tamar has done a bit of working optimising `ld.bfd`:
 https://github.com/Mistuke/binutils-gdb

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16084#comment:4>
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