[Conformance checker] Capture potential matches for missing witnesses.#33995

Merged

DougGregor merged 2 commits intoswiftlang:masterfrom

DougGregor:conformance-checker-missing-witnesses

Sep 19, 2020

Commits on Sep 18, 2020

[Conformance checker] Capture potential matches for missing witnesses.
DougGregor
committed

Commits on Sep 19, 2020

[Conformance checker] Eliminate redundant recording of missing witnesses.
DougGregor
committed