Arm Working On Function Multi-Versioning For GCC

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A feature supported by the GNU Compiler Collection (GCC) that sadly isn’t used more often is function multi-versioning (FMV) for supporting multiple versions of a function with the given function selected based upon the target processor in use. GCC FMV on x86_64 allows for different functions to be used whether supporting SSE4.2, AVX, or even a particular CPU micro-architecture. Arm is finally working on GCC function multi-versioning support for AArch64…

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