split             905 src/Func.cpp   void Stage::split(const string &old, const string &outer, const string &inner, Expr factor, bool exact, TailStrategy tail) {
split            1016 src/Func.cpp   Stage &Stage::split(VarOrRVar old, VarOrRVar outer, VarOrRVar inner, Expr factor, TailStrategy tail) {
split            1855 src/Func.cpp   Func &Func::split(VarOrRVar old, VarOrRVar outer, VarOrRVar inner, Expr factor, TailStrategy tail) {