need add testcases
Zhongyao Chen 於 2025年9月11日 週四，20:10寫道：
> From: Zhongyao Chen
>
> users can now write code like the following to adapt to the
> current RISC-V profile selected at compile time:
>
> ```c
> #ifdef __riscv_rva23u64
> // Code specific to the rva23u64 profile
> #endif
> ```
From: Zhongyao Chen
users can now write code like the following to adapt to the
current RISC-V profile selected at compile time:
```c
#ifdef __riscv_rva23u64
// Code specific to the rva23u64 profile
#endif
```
gcc/
* common/config/riscv/riscv-common.cc
(riscv_subset_list::get_p
