question: public void pruneExceptionalOut ( ) { if ( hasReachableExceptionHandlers ( ) ) { for ( Enumeration < BasicBlock > e = getBasicBlocks ( ) ; e . hasMoreElements ( ) ; ) { BasicBlock bb = e . nextElement ( ) ; bb . pruneExceptionalOut ( this ) ; } } }
target:  Prune the exceptional out edges for each basic block in the IR.