mstorsjo added a comment.

In https://reviews.llvm.org/D38680#903203, @joerg wrote:

> I've looked at this in some detail now. I'm not exactly sure yet why it is 
> broken. The patch seems quite wrong to me. DW_CFA_GNU_args_size should be 
> applied only when unwinding a call instruction and that regard, the commit 
> message of the original change is quite correct. What I am still trying to 
> understand is how the precise unwind frame disagrees with the unwinder.


@joerg Any update on this matter, how should we move forward with unbreaking 
the unwinding on i386?


https://reviews.llvm.org/D38680



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