[llvm-commits] new .file directive

[Nick Lewycky]

[+cfe-commits because there's now a clang patch involved too.]

On 14 October 2011 13:56, Eric Christopher <echristo at apple.com> wrote:

>
> On Oct 14, 2011, at 1:12 PM, Nick Lewycky wrote:
>
> Does anybody really, really care about the .s format emitted by clang/llc
> staying compatible with older assemblers? If so, do you have a suggestion
> for how we should go about maintaining compatibility?
>
>
> Given all of the whining we get about not supporting someone's ancient this
> or that… a bit.
>
> The standard way to do this would be an autoconf check to see if it
> successfully assembles the file directive.
>

I've gone ahead and implemented control for this just like the CFI
directives. It turns off with -no-integrated-as or -fno-dwarf-directory-asm
on clang, or with -disable-dwarf-directory on llc. The
-fno-dwarf-directory-asm flag is ignored when emitting .o files directly.

Please review!

Nick
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