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codeql/cpp/ql
Pavel Avgustinov eca31908ab HashCons: Make some functionality apparent.
The user knows that an expression functionally determines its
hashCons value, and that an expression functionally determines
its number of children, but this is not provable from the
definitions, and so not usable by the optimiser. By storing
the result of those known-functional calls in a variable,
rather than repeating the call, we enable better join orders.
2019-09-18 12:54:48 +01:00
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