+ fprintf(f, " ");
+}
+
+const char *
+ir_print_visitor::unique_name(ir_variable *var)
+{
+ /* var->name can be NULL in function prototypes when a type is given for a
+ * parameter but no name is given. In that case, just return an empty
+ * string. Don't worry about tracking the generated name in the printable
+ * names hash because this is the only scope where it can ever appear.
+ */
+ if (var->name == NULL) {
+ static unsigned arg = 1;
+ return ralloc_asprintf(this->mem_ctx, "parameter@%u", arg++);
+ }
+
+ /* Do we already have a name for this variable? */
+ const char *name = (const char *) hash_table_find(this->printable_names, var);
+ if (name != NULL)
+ return name;
+
+ /* If there's no conflict, just use the original name */
+ if (_mesa_symbol_table_find_symbol(this->symbols, -1, var->name) == NULL) {
+ name = var->name;
+ } else {
+ static unsigned i = 1;
+ name = ralloc_asprintf(this->mem_ctx, "%s@%u", var->name, ++i);
+ }
+ hash_table_insert(this->printable_names, (void *) name, var);
+ _mesa_symbol_table_add_symbol(this->symbols, -1, name, var);
+ return name;