Fix knob to only ask it we will actually use knob

diff --git a/src/ASTTransform/elementopt.cc b/src/ASTTransform/elementopt.cc
index b0866edc1d0985a64ad213262ef992132581e5e1..96ca8f65cb408c14400fae975dff4d65160b5de0 100644 (file)
--- a/src/ASTTransform/elementopt.cc
+++ b/src/ASTTransform/elementopt.cc
@@ -9,7 +9,7 @@
 
 ElementOpt::ElementOpt(CSolver *_solver)
        : Transform(_solver),
-       updateSets(solver->getTuner()->getTunable(ELEMENTOPTSETS, &onoff) == 1)
+         updateSets(false)
 {
 }
 
@@ -20,6 +20,9 @@ void ElementOpt::doTransform() {
        if (solver->getTuner()->getTunable(ELEMENTOPT, &onoff) == 0)
                return;
 
+       //Set once we know we are going to use it.
+       updateSets = solver->getTuner()->getTunable(ELEMENTOPTSETS, &onoff) == 1;
+       
        SetIteratorBooleanEdge *iterator = solver->getConstraints();
        while (iterator->hasNext()) {
                BooleanEdge constraint = iterator->next();