[GHC] #10687: Clang 3.6 fails with -g due to .file directive order

[GHC]

#10687: Clang 3.6 fails with -g due to .file directive order
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        Reporter:  scpmw             |                Owner:
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.10.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"36811bfd3bd981d3cd3cc7280e1a815ba1ed42e9/ghc"
 36811bfd/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="36811bfd3bd981d3cd3cc7280e1a815ba1ed42e9"
 AsmCodeGen: Ensure LLVM .line directives are sorted

 Apparently some Clang 3.6 expects these to be sorted.

 Patch due to Peter Wortmann.

 Fixes #10687.
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10687#comment:2>
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