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Optimize DIV for some common divisors#2327
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how were these divisors selected? benchmark results? |
rphmeier
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Sep 26, 2016
| TWO_POW_96 => a >> 96, | ||
| TWO_POW_224 => a >> 224, | ||
| TWO_POW_248 => a >> 248, | ||
| _ => a.overflowing_div(b).0, |
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couldn't these be put into the implementation of div itself for U256?
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I think it's better here - it's for evm's specific use cases. Uint is supposed to be general purpose library I don't think it suits well there. Probably would be better to use a different division algorithm there in additon.
gavofyork
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Selected by building a histogram for a few thousand recent blocks. This improves import time for some of the heavy blocks by a factor of two |
arkpar
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jacogr
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Sep 29, 2016
* master: Fixing Delegate Call in JIT (#2378) Prioritizing re-imported transactions (#2372) Revert #2172, pretty much. (#2387) correct sync memory usage calculation (#2385) Update gitlab-ci Fix the traceAddress field in transaction traces. (#2373) Removing extras data from retracted blocks. (#2375) fixed #2263, geth keys with ciphertext shorter than 32 bytes (#2318) Expanse compatibility (#2369) Specify column cache sizes explicitly; default fallback of 2MB (#2358) Canonical state cache (master) (#2311) make block queue into a more generic verification queue and fix block heap size calculation (#2095) Hash Content RPC method (#2355) Reorder transaction_by_hash to favour canon search (#2332) DIV optimization (#2327) Error when deserializing invalid hex (#2339) Changed http:// to https:// on some links (#2349) add a test fix migration system, better errors # Conflicts: # .gitlab-ci.yml
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