--TEST--
DCE 004: Elimination of assignment to non-escaping arrays
--INI--
opcache.enable=1
opcache.enable_cli=1
opcache.optimization_level=-1
opcache.opt_debug_level=0x20000
--SKIPIF--
<?php require_once('skipif.inc'); ?>
--FILE--
<?php
function foo(int $x, int $y) {
	$a = [$x];
	$a[1] = $y;
	$a = $y;
	return $a;
}
--EXPECTF--
$_main: ; (lines=1, args=0, vars=0, tmps=0)
    ; (after optimizer)
    ; %sdce_004.php:1-8
L0 (8):     RETURN int(1)

foo: ; (lines=4, args=2, vars=3, tmps=0)
    ; (after optimizer)
    ; %sdce_004.php:2-7
L0 (2):     CV0($x) = RECV 1
L1 (2):     CV1($y) = RECV 2
L2 (5):     CV2($a) = QM_ASSIGN CV1($y)
L3 (6):     RETURN CV2($a)