+/**
+ * Allows or disallows the creation of Psi nodes for the given Phi nodes.
+ * @return 1 if allowed, 0 otherwise
+ */
+static int arm_is_psi_allowed(ir_node *sel, ir_node *phi_list, int i, int j) {
+ ir_node *cmp, *cmp_a, *phi;
+ ir_mode *mode;
+
+
+ /* currently Psi support is not implemented */
+ return 0;
+
+/* we don't want long long Psi */
+#define IS_BAD_PSI_MODE(mode) (!mode_is_float(mode) && get_mode_size_bits(mode) > 32)
+
+ if (get_irn_mode(sel) != mode_b)
+ return 0;
+
+ cmp = get_Proj_pred(sel);
+ cmp_a = get_Cmp_left(cmp);
+ mode = get_irn_mode(cmp_a);
+
+ if (IS_BAD_PSI_MODE(mode))
+ return 0;
+
+ /* check the Phi nodes */
+ for (phi = phi_list; phi; phi = get_irn_link(phi)) {
+ ir_node *pred_i = get_irn_n(phi, i);
+ ir_node *pred_j = get_irn_n(phi, j);
+ ir_mode *mode_i = get_irn_mode(pred_i);
+ ir_mode *mode_j = get_irn_mode(pred_j);
+
+ if (IS_BAD_PSI_MODE(mode_i) || IS_BAD_PSI_MODE(mode_j))
+ return 0;
+ }
+
+#undef IS_BAD_PSI_MODE
+
+ return 1;
+}
+