diff --git a/ext/opcache/jit/zend_jit_x86.dasc b/ext/opcache/jit/zend_jit_x86.dasc
index dcb32d92b5e8b..e1bd5bfdbdfea 100644
--- a/ext/opcache/jit/zend_jit_x86.dasc
+++ b/ext/opcache/jit/zend_jit_x86.dasc
@@ -5157,7 +5157,7 @@ static int zend_jit_long_math_helper(dasm_State    **Dst,
 		result_reg = ZREG_R0;
 	} else {
 		/* ASSIGN_DIM_OP */
-		if (sizeof(void*) == 4
+		if (ZREG_FCARG1 == ZREG_RCX
 		 && (opcode == ZEND_SL || opcode == ZEND_SR)
 		 && Z_MODE(op2_addr) != IS_CONST_ZVAL) {
 			result_reg = ZREG_R2;
diff --git a/ext/opcache/tests/jit/gh11917.phpt b/ext/opcache/tests/jit/gh11917.phpt
new file mode 100644
index 0000000000000..a66105d7a8f7a
--- /dev/null
+++ b/ext/opcache/tests/jit/gh11917.phpt
@@ -0,0 +1,61 @@
+--TEST--
+GH-11917: primitives seem to be passed via reference instead of by value under some conditions when JIT is enabled on windows
+--INI--
+opcache.enable=1
+opcache.enable_cli=1
+--FILE--
+<?php
+$a = [2147483647,2147483647,2147483647,3,0,0,32,2147483584,127];
+echo crc32(json_encode(bitwise_small_split($a))) . "\n";
+echo crc32(json_encode(bitwise_small_split($a))) . "\n";
+echo crc32(json_encode(bitwise_small_split($a))) . "\n";
+echo crc32(json_encode(bitwise_small_split($a))) . "\n";
+
+function bitwise_small_split($val)
+{
+    $split = 8;
+    $vals = [];
+
+    $mask = (1 << $split) - 1;
+
+    $i = $overflow = 0;
+    $len = count($val);
+    $val[] = 0;
+    $remaining = 31;
+
+    while ($i != $len) {
+        $digit = $val[$i] & $mask;
+
+        $val[$i] >>= $split;
+        if (!$overflow) {
+            $remaining -= $split;
+            $overflow = $split <= $remaining ? 0 : $split - $remaining;
+
+            if (!$remaining) {
+                $i++;
+                $remaining = 31;
+                $overflow = 0;
+            }
+        } elseif (++$i != $len) {
+            $tempmask = (1 << $overflow) - 1;
+            $digit |= ($val[$i] & $tempmask) << $remaining;
+            $val[$i] >>= $overflow;
+            $remaining = 31 - $overflow;
+            $overflow = $split <= $remaining ? 0 : $split - $remaining;
+        }
+
+        $vals[] = $digit;
+    }
+
+    while ($vals[count($vals) - 1] == 0) {
+        unset($vals[count($vals) - 1]);
+    }
+
+    return array_reverse($vals);
+}
+?>
+--EXPECT--
+48207660
+48207660
+48207660
+48207660