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Merge pull request #13081 from ethereum/cse-optimization-changelog

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Update changelog with information about changes to CommonSubexpressionEliminator
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Damian Wechman 2022-06-07 13:18:38 +02:00 committed by GitHub
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@ -12,6 +12,7 @@ Compiler Features:
Bugfixes: Bugfixes:
* ABI Encoder: When encoding an empty string coming from storage do not add a superfluous empty slot for data. * ABI Encoder: When encoding an empty string coming from storage do not add a superfluous empty slot for data.
* Common Subexpression Eliminator: Process assembly items in chunks with maximum size of 2000. It helps to avoid extremely time-consuming searches during code optimization.
* Yul Optimizer: Do not remove ``returndatacopy`` in cases in which it might perform out-of-bounds reads that unconditionally revert as out-of-gas. Previously, any ``returndatacopy`` that wrote to memory that was never read from was removed without accounting for the out-of-bounds condition. * Yul Optimizer: Do not remove ``returndatacopy`` in cases in which it might perform out-of-bounds reads that unconditionally revert as out-of-gas. Previously, any ``returndatacopy`` that wrote to memory that was never read from was removed without accounting for the out-of-bounds condition.