SUMMARY:
We currently emit a reference for function address constants as labels;
for example:
foo_ptr:
.long foo
however, there may be no such label in the case where the function is
undefined. Although the label exists when the function is defined, we
will (to be consistent) also use a csect reference in that case.
Reviewers: daltenty,hubert.reinterpretcast,jasonliu,Xiangling_L
Subscribers: cebowleratibm, wuzish, nemanjai
Differential Revision: https://reviews.llvm.org/D71144
diggerlin