[LLVMdev] interest in an .eh_frame parser in llvm?

[Philip Reames]

On 12/18/2014 06:58 PM, Kevin Modzelewski wrote:
> I'd be interested in that, though would it be an issue if it doesn't 
> have an in-tree user?
Quite possibly.  It would bit rot if nothing else.

At minimum, we need a dumper tool - possibly an option to an existing 
one - which produces human readable output and a bunch of lit tests to 
ensure it's not broken by other changes.  In particular, we need to make 
sure that the in tree parser can parse the sections llvm itself is 
producing.

p.s. One thing I think we need to be very careful to document is that 
this .eh_frame parser is version locked to the same version of llvm and 
is only guaranteed to parse output from that version of llvm.  I'm not 
opposed to trying to be more generic, but I suspect that would involve a 
lot more work.
>
> On Mon, Dec 15, 2014 at 11:09 PM, Sanjoy Das 
> <sanjoy at playingwithpointers.com 
> <mailto:sanjoy at playingwithpointers.com>> wrote:
>
>     Hi all,
>
>     Our use case for LLVM requires us to parse the .eh_frame sections
>     emitted by MCJIT (for callee-saved-register spill slots, amongst other
>     things).  Does it make sense to have an in-tree parser for .eh_frame,
>     given that it will make such tasks a lot easier?
>
>     -- Sanjoy
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