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Ethereum: What keeps Solidity compiler from optimizing `address(this).balance` to `selfbalance()`?

8 February، 2025 CRYPTOCURRENCY

Dilemma Optimization: To unpack Ethereum optimization mechanisms

In this article, we are immersed in the Ethereum Optimizer world and investigate why “name) is not always optimized.

the background of solidity translators

Ethereum SOLYDY COMPILER is a critical element that translates a high level of strength (programming language used to create decentralized programs) into a low -level byte code. This process includes many optimization steps to improve the power, readability and maintenance of the code.

Optimizer: The main component

Ethereum is a virtual machine (EVM) optimizer that operates at the top of Solid’s translator. Its main function is to reduce the size and complexity of the translator’s byte code, maintaining or even increasing the accuracy of the optimized code. The optimizer takes into account various factors, including:

  • GAS Cost : Higher gas costs can make decisions to optimize.

  • Code Length

    : Longer code bases are more optimized for performance.

  • Using instructions

    Ethereum: What keeps Solidity compiler from optimizing `address(this).balance` to `selfbalance()`?

    : Often use of complex instructions may require optimization.

** Why do not always optimize “Name (this).

Consider the example:

`Solidarity

Pragma solidity ^0.8.0;

Contract with MyContract {

Functions Balance () Public Video Return (Uint256) {

Return address (this). Equilibrium;

}

// Introduction of Simple Optimization: When called Self Value ()

// Update the balance without using the "name (this) .Balance".

Functions Update BALANCE () Public {

Uint256 newbalance = self.bolance ();

Name (this) .Balance = 0; // This line is optimized

}

}

In this case, the optimizer is likely to decide to optimize the “name” (this) .Balance = 0The renewal of the local variable can reduce gas consumption without the use of the initial value.

Self.bolance ()vs. Name (this). Balance () Difference

Although it seems to be "I" and "name" (this) .Balance () “equivalent, important difference:

  • Self.bolance ()Return the remainder of the current copy of the contract.

  • Name (EZ) .Balance ()Return the remainder of the current contract name.

This means that when calling the Updatebalance () call, you want to update the local variable in the current contract (self), instead of changing the global state. Using Name (EZ) .Balance () We make sure that optimization is properly applied because it indicates local value, not global value.

Conclusion

In conclusion, although Solidi Compiler and its optimizer seek out the power code, there are scenarios where optimization is not always exposed or even intentionally bypassing. The most important part of the example is that the difference between “self” () and “name (EZ) .Balance () is their reference semantics, which can affect optimization solutions.

When developers work with Ethereum EVM, understanding of these treats helps to write a more efficient, readable and maintained code while reducing gas consumption.

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