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Optimize string migration: only return new value if needed #3173
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Cadence Benchstat comparisonThis branch with compared with the base branch onflow:master commit aa14837 Collapsed results for better readability
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SupunS
approved these changes
Mar 13, 2024
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Work towards #3096
Description
Great suggestion from @bluesign: Currently, the string migration always returns a new string/character value, even if the value was already normalized.
Only return a new value if the old value was not normalized.
Only compute the normalized form once, and use it both for comparison and actual use in the value.
Given the majority of the strings are likely do not need any normalization, this should reduce a lot of unnecessary overhead.
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