Fixed codegeneration for MATCH

Fixes oss-fuzz #63681

Author: dstogov

ext/opcache/jit/zend_jit_ir.c

@@ -15572,6 +15572,16 @@ static int zend_jit_switch(zend_jit_ctx *jit, const zend_op *opline, const zend_
 					} ZEND_HASH_FOREACH_END();
 					_zend_jit_add_predecessor_ref(jit, default_b, jit->b, ref);
 				}
+			} else if (!(op1_info & MAY_BE_UNDEF)) {
+				if (next_opline) {
+					if (next_opline == default_opline) {
+						ir_END_list(continue_list);
+					} else {
+						jit_SIDE_EXIT(jit, ir_CONST_ADDR(default_label));
+					}
+				} else {
+					_zend_jit_add_predecessor_ref(jit, default_b, jit->b, ir_END());
+				}
 			}
 
 			if (op1_info & MAY_BE_UNDEF) {

ext/opcache/tests/jit/match_002.phpt

@@ -0,0 +1,21 @@
+--TEST--
+JIT Match: 002 impossible input
+--INI--
+opcache.enable=1
+opcache.enable_cli=1
+opcache.file_update_protection=0
+opcache.jit_buffer_size=1M
+--FILE--
+<?php
+class C {
+}
+function foo(C $i) {
+    return match($i) {
+    	1,2=>0,
+    	default=>42
+    };
+};
+var_dump(foo(new C));
+?>
+--EXPECT--
+int(42)

ext/opcache/tests/jit/match_003.phpt

@@ -0,0 +1,18 @@
+--TEST--
+JIT Match: 003 impossible input
+--INI--
+opcache.enable=1
+opcache.enable_cli=1
+opcache.file_update_protection=0
+opcache.jit_buffer_size=1M
+--FILE--
+<?php
+function foo(C $i) {
+    match($i) {
+    	1,2=>0
+    };
+};
+?>
+DONE
+--EXPECT--
+DONE