[GHC] #8685: -split-objs doesn't work for executables

[GHC]

#8685: -split-objs doesn't work for executables
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              Reporter:  refold      |            Owner:
                  Type:  feature     |           Status:  new
  request                            |        Milestone:
              Priority:  normal      |          Version:  7.6.3
             Component:  Driver      |         Keywords:
            Resolution:              |     Architecture:  Unknown/Multiple
      Operating System:              |       Difficulty:  Unknown
  Unknown/Multiple                   |       Blocked By:
       Type of failure:              |  Related Tickets:
  None/Unknown                       |
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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Description changed by refold:

Old description:

> While investigating [this bug
> report](https://github.com/haskell/cabal/issues/1611), I've noticed that
> the `-split-objs` option only works for libraries, but not for
> executables. That is, unlike in the case of libraries, the driver feeds
> only `A.o B.o ...` files to the linker instead of `A_split_0.o
> A_split_1.o ... B_split_0.o B_split_1.o ...`. It'd be nice if `-split-
> objs` could be changed to also work on executables.

New description:

 While investigating [https://github.com/haskell/cabal/issues/1611 this bug
 report], I've noticed that the `-split-objs` option only works for
 libraries, but not for executables. That is, unlike in the case of
 libraries, the driver feeds only `A.o B.o ...` files to the linker instead
 of `A_split_0.o A_split_1.o ... B_split_0.o B_split_1.o ...`. It'd be nice
 if `-split-objs` could be changed to also work on executables.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8685#comment:2>
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