Merge llvm-project release/14.x llvmorg-14.0.0-rc4-2-gadd3ab7f4c8a
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-14.0.0-rc4-2-gadd3ab7f4c8a.
PR: 261742
MFC after: 2 weeks
(cherry picked from commit fb03ea46eb853b2d128828e9d82882125bcc1657)