-static int sim_Barrier(x87_state *state, ir_node *node) {
- //const arch_env_t *arch_env = state->sim->arch_env;
+/**
+ * Simulate the Barrier to generate Unknowns.
+ * We must push something on the stack for its value.
+ *
+ * @param state the x87 state
+ * @param irn the node that should be simulated (and patched)
+ *
+ * @return NO_NODE_ADDED
+ */
+static int sim_Barrier(x87_state *state, ir_node *node)
+{