[GHC] #13265: perf-llvm build fails with "Too many sections: 123418 (>= 65280)"

[GHC]

#13265: perf-llvm build fails with "Too many sections: 123418 (>= 65280)"
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        Reporter:  erikd             |                Owner:  rwbarton
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.2.1
       Component:  Compiler (LLVM)   |              Version:  8.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Building GHC      |  Unknown/Multiple
  failed                             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D3282
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"90009cf62bcebf875e68af625dbdbfc3c2f71717/ghc"
 90009cf6/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="90009cf62bcebf875e68af625dbdbfc3c2f71717"
 llvm backend: Put string constants in .rodata.str.* sections (#13265)

 The .cstring.* sections don't get merged by the linker (bfd or gold).
 That's bad, and especially bad in #13265 where it caused the number of
 sections to exceed what is apparently an internal limit in ld.bfd.

 Test Plan:
 I can only test this on Linux, and I am guessing at what
 the correct behavior is on Mac OS and Windows (and AIX I suppose).
 Testers on other platforms would be much appreciated, though I
 understand that the LLVM backend is broken on Mac OS currently for
 other reasons (#13378).

 Reviewers: olsner, austin, xnyhps, bgamari

 Reviewed By: bgamari

 Subscribers: thomie

 Differential Revision: https://phabricator.haskell.org/D3282
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13265#comment:8>
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