I think in general we're overdue for more compiler directives, and not just branch hints. As heterogenous architectures become more standard, we really need a w

I think in general we're overdue for more compiler directives, and not just branch hints. As heterogenous architectures become more standard, we really need a way to tag what functions are best to run with what types of instructions. For example, tag a function that will utilize SIMD so that if a thread is running this function, the operating system knows to try to have it run on the cores that support SIMD. As of now, with P and E Cores for Intel, Intel is straight up disabling instructions to ensure uniform instruction support.