[PATCH] Allow -gsplit-dwarf for all ELF targets, not just Linux

[Paul Robinson]

In http://reviews.llvm.org/D8484#144547, @emaste wrote:

> In http://reviews.llvm.org/D8484#144353, @probinson wrote:
>
> > Please disable this for PS4?  Our toolchain isn't ready to support this.
>
>
> Presumably you wouldn't pass -gsplit-dwarf to clang when building for PS4 though?


*I* wouldn't, but licensees love to try stuff out even if we don't claim it
works.  Currently, adding -gsplit-dwarf to a command line silently has
no effect.  With your patch, I get:

clang.exe: error: unable to execute command: program not executable

which will inevitably cause a support call and cost us time and effort.
I'd prefer to preserve the "silently has no effect" behavior, at least until
we are able to support this properly.


http://reviews.llvm.org/D8484

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