Merge llvm-project release/15.x llvmorg-15.0.2-10-gf3c5289e7846
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-15.0.2-10-gf3c5289e7846.
PR: 265425
MFC after: 2 weeks
(cherry picked from commit 6246ae0b85d8159978c01ae916a9ad6cde9378b5)