| --TEST-- |
| DCE 009: Foreach over empty array is a no-op |
| --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 |
| class Loop { |
| const VALUES = []; |
| public static function test() { |
| echo "Start\n"; |
| $y = []; |
| foreach ($y as $x) { |
| } |
| echo "Done\n"; |
| } |
| public static function test2() { |
| foreach (self::VALUES as $x) { |
| } |
| } |
| public static function test3() { |
| foreach ([] as $k => &$v) { |
| } |
| } |
| } |
| Loop::test(); |
| Loop::test2(); |
| Loop::test3(); |
| ?> |
| --EXPECTF-- |
| $_main: |
| ; (lines=7, args=0, vars=0, tmps=0) |
| ; (after optimizer) |
| ; %sdce_009.php:1-24 |
| 0000 INIT_STATIC_METHOD_CALL 0 string("Loop") string("test") |
| 0001 DO_UCALL |
| 0002 INIT_STATIC_METHOD_CALL 0 string("Loop") string("test2") |
| 0003 DO_UCALL |
| 0004 INIT_STATIC_METHOD_CALL 0 string("Loop") string("test3") |
| 0005 DO_UCALL |
| 0006 RETURN int(1) |
|
|
| Loop::test: |
| ; (lines=3, args=0, vars=0, tmps=0) |
| ; (after optimizer) |
| ; %sdce_009.php:4-10 |
| 0000 ECHO string("Start\n") |
| 0001 ECHO string("Done\n") |
| 0002 RETURN null |
|
|
| Loop::test2: |
| ; (lines=1, args=0, vars=0, tmps=0) |
| ; (after optimizer) |
| ; %sdce_009.php:11-14 |
| 0000 RETURN null |
|
|
| Loop::test3: |
| ; (lines=3, args=0, vars=0, tmps=1) |
| ; (after optimizer) |
| ; %sdce_009.php:15-18 |
| 0000 V0 = FE_RESET_RW array(...) 0001 |
| 0001 FE_FREE V0 |
| 0002 RETURN null |
| Start |
| Done |
|
|
