2013/11/18 Jeff Law <l...@redhat.com>: > On 11/18/13 11:27, Ilya Enkovich wrote: >> >> >> How does pointer passed to regular function differ from pointer passed >> to splitted function? How do I know then which pointer is to be passed >> with bounds and wchich one is not? Moreover current ABI does not allow >> to pass bounds with no pointer or pass bounds for some pointers in the >> call only. > > But I don't see any case in function splitting where we're going to want to > pass the pointer without the bounds. If you want the former, you're going > to want the latter.
There are at least cases when checks are eliminated or when lots of pointer usages are accompanied with few checks performed earlier (e.g. we are working with array). In such cases splitted part may easily get no bounds. > > I really don't see why you need to do anything special here. At the most an > assert in the splitting code to ensure that you don't have a situation where > there's mixed pointers with bounds and pointers without bounds should be all > you need or that you passed a bounds with no associated pointer :-) It would also require generation of proper bind_bounds calls in the original function and arg_bounds calls in a separated part. So, special support is required. > > > Jeff
