Kuter Dinel 66a0b3464c [Attributor] AAFunctionReachability, Handle CallBase Reachability.
This patch makes it possible to query callbase reachability
(Can a callbase reach a function Fn transitively).
The patch moves the reachability query handling logic to a member class,
this class will have more users within the AA once we add other function
reachability queries.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D106402
2021-09-13 01:35:44 +03:00
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