Johannes Doerfert b0c77c36d2 [Attributor] Add an Attributor CGSCC pass and run it ...

In addition to the module pass, this patch introduces a CGSCC pass that
runs the Attributor on a strongly connected component of the call graph
(both old and new PM). The Attributor was always design to be used on a
subset of functions which makes this patch mostly mechanical.

The one change is that we give up `norecurse` deduction in the module
pass in favor of doing it during the CGSCC pass. This makes the
interfaces simpler but can be revisited if needed.

Reviewed By: hfinkel

Differential Revision: https://reviews.llvm.org/D70767

2020-02-08 21:27:34 -06:00

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