Merge llvm-project main llvmorg-15-init-17485-ga3e38b4a206b
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-15-init-17485-ga3e38b4a206b.
PR: 265425
MFC after: 2 weeks
(cherry picked from commit fcaf7f8644a9988098ac6be2165bce3ea4786e91)