expr_transform
expr_transform(e->left.expr),
expr_transform(e->right.expr));
e = expr_transform(e);
e = expr_transform(e);
struct expr *expr_transform(struct expr *e);
basedep = expr_transform(basedep);
dep = expr_transform(dep);
basedep = expr_eliminate_dups(expr_transform(basedep));
dep = expr_eliminate_dups(expr_transform(dep));