llvm dev - May 2016 - Is there a way to force debug_frame to be enabled on SEH windows?

I'm cross compiling using clang for x86_64 windows using SEH exceptions.
If at all possible, I would like to enable unwind tables to be
generated in debug_frame,
but I was unable to figure out how to accomplish this. Is there a supported way?

Thanks,
Keno

It's not possible today, but it is probably technically feasible. You
would arrange for both of these booleans to be true in
X86FrameLowering::emitPrologue:
  bool NeedsWinCFI = IsWin64Prologue && Fn->needsUnwindTableEntry();
  bool NeedsDwarfCFI       !IsWin64Prologue && (MMI.hasDebugInfo() ||
Fn->needsUnwindTableEntry());

On Fri, May 20, 2016 at 10:00 PM, Keno Fischer via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
> I'm cross compiling using clang for x86_64 windows using SEH
exceptions.
> If at all possible, I would like to enable unwind tables to be
> generated in debug_frame,
> but I was unable to figure out how to accomplish this. Is there a supported
way?
>
> Thanks,
> Keno
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