Reuse temp variables in other code generators #22011
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Description
Updates more code generators to use
Scope#getOrCreateTempVariableto increase variable reuse opportunities and reduce overall generated code size.Additional context and related issues
Follows up on work done in #22004 on
RowExpressionCodeGeneratorand enabled by airlift/bytecode#18Release notes
(x) This is not user-visible or is docs only, and no release notes are required.
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