[LLVMdev] setjmp/longjmp exception handling: how?

[Jim Grosbach]

I strongly advise you not to use SjLj exception handling. Use zero-cost-exceptions via DWARF instead.

If you really want to pursue sjlj anyway, look at the ARM backend. It uses them for darwin targets.

-Jim

On Jul 12, 2013, at 9:09 AM, Nicolas Ojeda Bar <N.Ojeda.Bar at dpmms.cam.ac.uk> wrote:

> Dear list,
> 
> I want to add SJLJ exception handling to my frontend. Unfortunately,
> there doesn't seem to be any examples in the documentation as to how
> to use the intrinsics
> 
> @llvm.eh.sjlj.setjmp
> @llvm.eh.sjlj.longjmp
> @llvm.eh.sjlj.lsda
> @llvm.eh.sjlj.callsite
> 
> Is there a way to force Clang to use SJLJ exception handling for C++? That
> way I would be able to look at its output to learn how to use them correctly.
> 
> Otherwise, how should I go about finding out how to implement SJLJ exception
> handling in my frontend?
> 
> Thanks!
> Nicolas
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