[PATCH] D109114: [GlobalDCE] Add a mode to VFE that replaces unused vtable slots with a trap function instead of a NULL pointer

[Peter Collingbourne via Phabricator via llvm-commits]

pcc added a comment.

Maybe you can set the relative offset to 0 in this case? That way, the crashing PC will point to the vtable, which should make it easier to track down the source of any problems. This would also require no runtime support (so doesn't need to be behind a flag) and also saves a PLT slot if the trap function would be in another DSO.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D109114/new/

https://reviews.llvm.org/D109114