### RT-Thread Version master ### Hardware Type/Architectures ARM contex-M4内核系列 ### Develop Toolchain IAR ### Describe the bug IAR 7.8~9.7编译M4内核工程报错，提示cpuport.c中__iar_builtin_rsr报错 <img width="574" height="360" alt="Image" src="https://github.com/user-attachments/assets/4e2507f7-c05b-4785-9bf3-3a78897b1959" /> 经排查，错误来源自#11316提交 ### Other additional context _No response_
RT-Thread Version
master
Hardware Type/Architectures
ARM contex-M4内核系列
Develop Toolchain
IAR
Describe the bug
IAR 7.8~9.7编译M4内核工程报错，提示cpuport.c中__iar_builtin_rsr报错
经排查，错误来源自#11316提交
Other additional context
No response