[LLVMdev] ShadowStackGC.cpp - More Dead Code?

[Ben Karel]

Hi Bill,

I don't think it's dead code, per se -- AFAIK there are still clients of
LLVM which use the shadow stack as part of their garbage collection
implementation. HLVM is probably the most visible such project.

My own project now has its own GC plugin to emit stack maps, rather than
relying on the shadow stack. But for what it's worth, I found the shadow
stack to be a useful stepping stone towards a "real" GC implementation when
I first started out with LLVM's garbage collector infrastructure.

-- Ben

On Sun, Aug 21, 2011 at 5:17 AM, Bill Wendling <wendling at apple.com> wrote:

> Hi,
>
> I've been looking at all of the uses of the 'unwind' instruction, and
> ShadowStackGC.cpp is the last pass which actually creates 'unwind'
> instructions. The thing is, this pass seems to be dead. It hasn't been
> updated in any meaningful way since ~79000.
>
> Should this pass go the way of the dodo?
>
> -bw
>
>
>
>
>
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20110823/63b1de76/attachment.html>