Remove unused PHP 8.1 BC layer in JIT (#9937)

Author: iluuu1994

ext/opcache/jit/zend_jit_disasm.c

@@ -697,9 +697,6 @@ static int zend_jit_disasm_init(void)
 	REGISTER_HELPER(zend_jit_post_inc_obj_helper);
 	REGISTER_HELPER(zend_jit_post_dec_obj_helper);
 	REGISTER_HELPER(zend_jit_rope_end);
-#if (PHP_VERSION_ID <= 80100) && (SIZEOF_SIZE_T == 4)
-	REGISTER_HELPER(zval_jit_update_constant_ex);
-#endif
 	REGISTER_HELPER(zend_jit_free_trampoline_helper);
 	REGISTER_HELPER(zend_jit_exception_in_interrupt_handler_helper);
 #undef  REGISTER_HELPER

ext/opcache/jit/zend_jit_helpers.c

@@ -3012,35 +3012,6 @@ static void ZEND_FASTCALL zend_jit_post_dec_obj_helper(zend_object *zobj, zend_s
 	}
 }
 
-#if (PHP_VERSION_ID <= 80100) && (SIZEOF_SIZE_T == 4)
-static zend_result ZEND_FASTCALL zval_jit_update_constant_ex(zval *p, zend_class_entry *scope)
-{
-	if (Z_TYPE_P(p) == IS_CONSTANT_AST) {
-		zend_ast *ast = Z_ASTVAL_P(p);
-
-		if (ast->kind == ZEND_AST_CONSTANT) {
-			zend_string *name = zend_ast_get_constant_name(ast);
-			zval *zv = zend_get_constant_ex(name, scope, ast->attr);
-			if (UNEXPECTED(zv == NULL)) {
-				return FAILURE;
-			}
-
-			zval_ptr_dtor_nogc(p);
-			ZVAL_COPY_OR_DUP(p, zv);
-		} else {
-			zval tmp;
-
-			if (UNEXPECTED(zend_ast_evaluate(&tmp, ast, scope) != SUCCESS)) {
-				return FAILURE;
-			}
-			zval_ptr_dtor_nogc(p);
-			ZVAL_COPY_VALUE(p, &tmp);
-		}
-	}
-	return SUCCESS;
-}
-#endif
-
 static void ZEND_FASTCALL zend_jit_free_trampoline_helper(zend_function *func)
 {
 	ZEND_ASSERT(func->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE);

ext/opcache/jit/zend_jit_x86.dasc

@@ -12766,11 +12766,7 @@ static int zend_jit_recv_init(dasm_State **Dst, const zend_op *opline, const zen
 		|	.if X64
 		|		EXT_CALL zval_update_constant_ex, r0
 		|	.else
-		||#if (PHP_VERSION_ID < 80100) && (SIZEOF_SIZE_T == 4)
-		|		EXT_CALL zval_jit_update_constant_ex, r0
-		||#else
 		|		EXT_CALL zval_update_constant_ex, r0
-		||#endif
 		|	.endif
 		|	test al, al
 		|	jnz >1