[GHC] #8405: experiment with using function-sections for linking (for smaller libs and executables)

[GHC]

#8405: experiment with using function-sections for linking (for smaller libs and
executables)
-------------------------------------+-------------------------------------
        Reporter:  carter            |                Owner:  olsner
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.6.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D1242
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"3021cc06f84109c6e7a529318d690c520748f936/ghc"
 3021cc06/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="3021cc06f84109c6e7a529318d690c520748f936"
 Add rts/Linker support for more than 64k sections

 Since some ELF fields ran out of range to represent that many sections,
 they've been extended with magic numbers that indicate that the full
 value is stored in another field.

 This will be necessary for GHCi with -split-sections on ELF platforms
 that don't use GNU ld.

 Reviewers: austin, bgamari, simonmar, erikd

 Reviewed By: bgamari, simonmar, erikd

 Subscribers: thomie

 Differential Revision: https://phabricator.haskell.org/D1357

 GHC Trac Issues: #8405
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8405#comment:15>
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