Examples of joust.utils.data.SymbolSet.intersect()

        EffectSet bodyEffects = tree.body.effects.getEffectSet();
        // If the body writes anything read by the cond or repeat, abort. (That shit's complicated.).
        SymbolSet bodyWrites = bodyEffects.writeInternal;


        // TODO: can *sometimes* deal with this. Sort of tricky, and implies very retarded code.
        if (!bodyWrites.intersect(condReads).isEmpty() || !bodyWrites.intersect(repeatReads).isEmpty()) {
            log.debug("Aborting unrolling - body writes to condition/repeat deps!");
            return;
        }


        // Attempt to evaluate the loop management code ahead of time.

        EffectSet bodyEffects = tree.body.effects.getEffectSet();
        // If the body writes anything read by the cond or repeat, abort. (That shit's complicated.).
        SymbolSet bodyWrites = bodyEffects.writeInternal;


        // TODO: can *sometimes* deal with this. Sort of tricky, and implies very retarded code.
        if (!bodyWrites.intersect(condReads).isEmpty() || !bodyWrites.intersect(repeatReads).isEmpty()) {
            log.debug("Aborting unrolling - body writes to condition/repeat deps!");
            return;
        }


        // Attempt to evaluate the loop management code ahead of time.

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