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Merge llvm-project release/16.x llvmorg-16.0.4-0-gae42196bc493

Description

Merge llvm-project release/16.x llvmorg-16.0.4-0-gae42196bc493

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-16.0.4-0-gae42196bc493 (aka 16.0.4 release).

PR: 271047
MFC after: 1 month