| --TEST-- | |
| DCE 001: Remove dead computation after constants propagation | |
| --INI-- | |
| opcache.enable=1 | |
| opcache.enable_cli=1 | |
| opcache.optimization_level=-1 | |
| opcache.opt_debug_level=0x20000 | |
| opcache.preload= | |
| zend_test.observer.enabled=0 | |
| --EXTENSIONS-- | |
| opcache | |
| --FILE-- | |
| <?php | |
| function foo(string $s1, string $s2, string $s3, string $s4) { | |
| $x = ($s1 . $s2) . ($s3 . $s4); | |
| $x = 0; | |
| return $x; | |
| } | |
| ?> | |
| --EXPECTF-- | |
| $_main: | |
| ; (lines=1, args=0, vars=0, tmps=0) | |
| ; (after optimizer) | |
| ; %sdce_001.php:1-8 | |
| 0000 RETURN int(1) | |
| foo: | |
| ; (lines=5, args=4, vars=4, tmps=0) | |
| ; (after optimizer) | |
| ; %sdce_001.php:2-6 | |
| 0000 CV0($s1) = RECV 1 | |
| 0001 CV1($s2) = RECV 2 | |
| 0002 CV2($s3) = RECV 3 | |
| 0003 CV3($s4) = RECV 4 | |
| 0004 RETURN int(0) | |