[PATCH] D45835: Add new driver mode for dumping compiler options

[Richard Smith - zygoloid via Phabricator via cfe-commits]

rsmith added a comment.

+ at dlj, who had some more ambitious plans for expressing our configuration as JSON.

The part you have here seems fine. I share Eli's concerns about exposing our `LangOptions` with any kind of implied stability guarantee.


https://reviews.llvm.org/D45835