[PATCH] D20383: PCH + Module: make sure we write out macros associated with builtin identifiers

[Ben Langmuir via cfe-commits]

benlangmuir added a subscriber: doug.gregor.
benlangmuir added a comment.

I'd like to see Doug and/or Richard review this.  It seems reasonable to me to first blush, but I assume there was a good reason we weren't doing this already...


http://reviews.llvm.org/D20383