[PATCH] D42085: Add va_start()/va_copy()/va_end to Builtins.def

[Hans Wennborg via Phabricator via cfe-commits]

hans accepted this revision.
hans added a comment.
This revision is now accepted and ready to land.

lgtm

Seems that some of these are tested in Sema/implicit-builtin-decl.c, but it doesn't look exhaustive and I'm not sure it's worth adding these.


https://reviews.llvm.org/D42085