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by comex
2247 days ago
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C is close to the interface the hardware presents you – that is, the instruction set – but far from what the hardware actually does. Caching, out-of-order execution, branch prediction, speculation... all of those things are just as opaque to assembly as they are to C. |
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C isn't even close to that anymore, now that so many processors have SIMD ISAs which C can't usefully model.