Yul expression simplifier: Don't substitute out of scope variables #16161
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matheusaaguiar
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In some circumstances (in particular if not the AST is not in SSA form), it could happen that the ExpressionSimplifier would substitute out-of-scope variables.
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In some circumstances (in particular if not the AST is not in SSA form), it could happen that the ExpressionSimplifier would substitute out-of-scope variables. From what I could tell, it seems impossible that this occurs in the default sequence, though.
Fixes #16155.