swift

0c3d7419 - [Coverage] Consolidate visitation logic for functions and nominal types

[Coverage] Consolidate visitation logic for functions and nominal types This should address an ASAN failure which arose due to the PGOMapping ASTWalker not being updated in sync with the other profiling-related walkers. rdar://39534066 (cherry picked from commit 3a72dd214db4e4bf93d3cad59a927b2132def291)