perf(precompile): use Bytes in precompile functions#1085
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rakita merged 3 commits intobluealloy:mainfrom Feb 13, 2024
Merged
perf(precompile): use Bytes in precompile functions#1085rakita merged 3 commits intobluealloy:mainfrom
Bytes in precompile functions#1085rakita merged 3 commits intobluealloy:mainfrom
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DaniPopes
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Feb 13, 2024
| let input = right_pad_vec(input, base_len + exp_len + mod_len); | ||
| let (base, input) = input.split_at(base_len); | ||
| let (exponent, modulus) = input.split_at(exp_len); | ||
| debug_assert_eq!(modulus.len(), mod_len); |
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Made this allocate only once in case input is too short.
modulus.len() must be mod_len due to the padding above, this is the same as slicing the input 3 times.
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DaniPopes
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Feb 13, 2024
| let mut padded = [0; LEN]; | ||
| let end = min(LEN, data.len()); | ||
| padded[..end].copy_from_slice(&data[..end]); | ||
| padded[..data.len()].copy_from_slice(data); |
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I realized these min calls were unnecessary since data.len() is always less than the input length by definition.
| return Err(Error::OutOfGas); | ||
| } | ||
| Ok((gas_used, input.to_vec())) | ||
| Ok((gas_used, input.clone())) |
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This is the biggest win IMO, avoids malloc+memcpy basically as if we're using Arc. identity precompile is common in code generated by Vyper.
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nit clippy |
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Closes #1072.