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gcc supports function multiversioning: https://gcc.gnu.org/onlinedocs/gcc/Function-Multiversioning.html https://gcc.gnu.org/onlinedocs/gcc/Function-Multiversio

• ttd 1y ago
  This is useful but not equivalent. Using this type of tooling you still have to write the algorithm itself in N versions. Changing the algorithm then requires changing all N implementations. This contrasts with the Halide approach where the algorithm is written once, and then schedules can be modified without worrying that you are changing the algorithm itself.