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|
--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=
--SKIPIF--
<?php require_once('skipif.inc'); ?>
--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:1-23
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
")
0001 ECHO string("Done
")
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
|
