[sil] Add SILArgument::getSingleTerminator() helper.#29601

swift-ci merged 1 commit intoswiftlang:masterswiftlang/swift:masterfrom

gottesmm:pr-132affdd3523248eb7aada4eb4717867466c15f1gottesmm/swift:pr-132affdd3523248eb7aada4eb4717867466c15f1Copy head branch name to clipboard