[PATCH] D19920: [libunwind][ARM] Improve unwinder stack usage on baremetal targets - part 1

[Asiri Rathnayake via cfe-commits]

rmaprath added a comment.

In http://reviews.llvm.org/D19920#421230, @bcraig wrote:

> > We could, on the other hand, do this tightening for all the supported architectures (for the new, native-only libunwind build suggested by @jroelofs) with appropriate asserts in place so that we maintain these tight bounds as we move forward. Not sure if that effort would be worth though, given that for most non-ARM targets, unwinder stack usage is not a huge concern.
>
>
> libunwind doesn't currently support Hexagon, but it has been investigated some there.  Hexagon would care about stack usage as well.  I wouldn't be surprised if some embedded MIPS and Power targets also cared.  I don't think any of those targets come close to using 1K for their unwind context.


Right, in that case, I will do the tightening for all the existing architectures. Will add a comment explaining the expected behaviour for future changes as well.

Thanks.

/ Asiri


http://reviews.llvm.org/D19920