[Docs] Update opaque pointers docs (NFC)
authorNikita Popov <npopov@redhat.com>
Tue, 5 Apr 2022 10:09:10 +0000 (12:09 +0200)
committerNikita Popov <npopov@redhat.com>
Tue, 5 Apr 2022 10:10:36 +0000 (12:10 +0200)
commitd4d30d6bb1a57fb8f017aa315ec7294d3eb9c09f
tree718aa308fea254b855b933c48cd77a3b0a2ed3f4
parent82bd0bd24f61c914f1812646b281c1d0960df0bf
[Docs] Update opaque pointers docs (NFC)

Point people to the cc1 instead of the mllvm flag, as the mllvm
flag will stop working for clang usage at some point.

Update transition state to mention that support in Clang/LLVM is
complete, and only the default switch is pending.
llvm/docs/OpaquePointers.rst