DEBUG.P("markBranches="+markBranches);
DEBUG.P("_tree="+_tree);
JCTree inner_tree = TreeInfo.skipParens(_tree);
DEBUG.P("inner_tree="+_tree);
DEBUG.P("inner_tree.tag="+inner_tree.myTreeTag());
if (inner_tree.tag == JCTree.CONDEXPR) {
JCConditional tree = (JCConditional)inner_tree;
CondItem cond = genCond(tree.cond, CRT_FLOW_CONTROLLER);