---
title: 不支持NEON指令
description: "```"
url: https://www.hikunpeng.com/document/detail/zh/kunpengdevkithistory/bisheng/hist-bisheng/kunpengbisheng_06_0035.html
sourcePath: /source/zh/kunpengdevkithistory/bisheng/hist-bisheng/kunpengbisheng_06_0035.html
indexId: 15f869b4de6c2e11eca941389745e94eb33674825bd8f853373540662e9dd41780
---
# 不支持NEON指令

#### 错误信息

```
error: unknown register name 'q0' in asm 
        : "memory", "cc", "q0" 
                          ^
```


#### 问题介绍

Clang中不支持NEON指令Q寄存器设计


#### 代码示例

```
$ cat bar.c 
int foo(void) { 
    __asm__("":::"q0"); 
    return 0; 
} 
$  clang bar.c  
bar.c:2:16: error: unknown register name 'q0' in asm 
    __asm__("":::"q0"); 
               ^ 
1 error generated.
```


#### 解决方案

修改qX寄存器为vX寄存器。