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Fix GH-24386: JIT: register operand must be loaded before the typed reference check #24387

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Fix GH-24386: JIT: register operand must be loaded before the typed reference check #24387

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7 changes: 7 additions & 0 deletions ext/opcache/jit/zend_jit_ir.c
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Original file line number Diff line number Diff line change
Expand Up @@ -6276,6 +6276,13 @@ static int zend_jit_assign_op(zend_jit_ctx *jit,
ir_ref if_op1_typed = IR_UNUSED;
binary_op_type binary_op = get_binary_op(opline->extended_value);

if (Z_MODE(op2_addr) == IS_REG
&& Z_LOAD(op2_addr)
&& jit->ra[Z_SSA_VAR(op2_addr)].ref == IR_NULL) {
/* Force load, so that the register is defined on all paths */
zend_jit_use_reg(jit, op2_addr);
}

ref = jit_ZVAL_ADDR(jit, op1_addr);
if_op1_ref = jit_if_Z_TYPE_ref(jit, ref, ir_CONST_U8(IS_REFERENCE));
ir_IF_FALSE(if_op1_ref);
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34 changes: 34 additions & 0 deletions ext/opcache/tests/jit/gh24386.phpt
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@@ -0,0 +1,34 @@
--TEST--
GH-24386 (register operand must be loaded before the typed reference check)
--EXTENSIONS--
opcache
--INI--
opcache.enable=1
opcache.enable_cli=1
opcache.jit=tracing
opcache.jit_hot_func=2
--FILE--
<?php
class C {
public int $prop = 0;
}

function f($n) {
global $g, $h;
$g += $n;
$h += $n;
}

f(2);
var_dump($g, $h);

$c = new C;
$g =& $c->prop;
f(3);
var_dump($c->prop, $h);
?>
--EXPECT--
int(2)
int(2)
int(3)
int(5)
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