git: 4b4fe385e49b..08e8dd7b9db7 - vendor/llvm-project/main - vendor branch updated

From: Dimitry Andric <dim_at_FreeBSD.org>
Date: Wed, 27 Jul 2022 19:52:17 UTC
The branch vendor/llvm-project/main has been updated by dim:

URL: https://cgit.FreeBSD.org/src/log/?id=4b4fe385e49b..08e8dd7b9db7

08e8dd7b9db7 Vendor import of llvm-project main llvmorg-15-init-17826-g1f8ae9d7e7e4, the last commit before the upstream release/16.x branch was created.