Instrument more
Instrument more

Summary:
Do not skip seemingly useless blocks. These may be trivial but contain source blocks.

A future diff may change the setup here. We could, for example, virtually merge the source blocks into a single guaranteed successor.

Reviewed By: jimmycFB

Differential Revision: D31113018

fbshipit-source-id: 7be436bea0a4c8388867517842d680e9d7418e95

facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex