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Link: https://lore.kernel.org/lkml/20241210113129.GB14735@willie-the-truck/T/ Select ARCH_SUPPORTS_AUTOFDO_CLANG to allow AUTOFDO_CLANG to be selected. On ARM64, ETM traces can be recorded and converted to AutoFDO profiles. Experiments on Android show 4% improvement in cold app startup time and 13% improvement in binder benchmarks. Bug: 382743224 Change-Id: I9d6d352ee6c0c7cd17ed2fbaf3d788f34ed78fbf Signed-off-by: Yabin Cui <yabinc@google.com> Reviewed-by: Rong Xu <xur.google.com> Tested-by: George Burgess IV <gbiv@google.com> Reviewed-by: Kees Cook <kees@kernel.org>