[GHC] #12576: Large Address space is unenable-able on Windows.

[GHC]

#12576: Large Address space is unenable-able on Windows.
-------------------------------------+-------------------------------------
           Reporter:  Phyx-          |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.0.1
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:  #12573 #12495
Differential Rev(s):                 |         Wiki Page:
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 Autoconf file changes have made it impossible to enable
 `USE_LARGE_ADDRESS_SPACE` for Windows, as the `--enable-large-address-
 space` flag is only respected on Darwin.

 The general case now depends on the presence of MADV_FREE to enable large
 address space support. Which means all possibility of enabling this
 feature on Windows have been removed.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12576>
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