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by Joker_vD
462 days ago
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What about execution speed? I find it somewhat hard to believe that adding 2/3 additional arithmetic instructions plus a branch to every addition/subtraction would perform better than having the (I believe quite small) circuitry after the ALU (probably still on the critical path) that detects carry-out/overflow and triggers a trap. > it is explicit, which makes it even better. No hidden behaviour. Which is why we do virtual address translation and populate (and evict!) L1/L2 caches in software, and the reason why CHERI project is misguided. |
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