Add structural equality comparison (EqualsTo) for LightExpression and System.Linq.Expressions#508

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copilot/add-structural-equality-comparison

Commits on Apr 12, 2026

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Add ExpressionEqualityComparer with EqualsTo extension method for LightExpression

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dadhi
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Convert ExpressionEqualityComparer to IEqualityComparer<Expression> and Issue431 tests to ITestX struct

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dadhi
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Convert ExpressionEqualityComparer to struct, share between LE and SLE

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dadhi
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Address review: SmallList8, proper recursive GetHashCode, IEqualityComparer, param/variable fail-fast, code improvements

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dadhi
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Fix comment wording in Parameter case per code review

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dadhi
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Improve Combine to Boost hash_combine, add AggressiveInlining, expression-bodied one-liners, hash tests

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dadhi
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