When we do simplification via AAPotentialValues or AAValueConstantRange
we need to simplify the operands of an instruction we deconstruct first.
This does not only improve the result, see for example range.ll, but is
required as we allow outside AAs to provide simplification rules via
callbacks. If we do ignore the simplification rules and base other
simplifications on the IR instead we can create an inconsistent state.
This looks like not a practical pattern in our codebase (it could fail
in some sandbox environement).
Instead we print it via standard output, and it is controled by the
-attributor-print-call-graph, this follows a similiar pattern of attributor-print-dep.
This attribute computes the optimistic live call edges using the attributor
liveness information. This attribute will be used for deriving a
inter-procedural function reachability attribute.
Reviewed By: jdoerfert
Differential Revision: https://reviews.llvm.org/D104059
Johannes Doerfert