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The way we detected if limit had spilled a variable was incorrect. This is because two consecutive calls to limit could require a spill of the same variable. Instead, we now use a return value from limit. Note that this is still not so ideal. Indeed, it works properly only when limit spills one value only, if not, we should return a bitset. In the current use scheme of limit, this invariant is true but ideally we would like to call limit with *all arguments added at once*, not one after the other. |
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