RISC-V: fix a typo in riscv.h

[Kito Cheng]

Hi Yeting:

Could you provide a test case for that?

On Mon, Sep 14, 2020 at 3:15 PM Yeting Kuo via Gcc-patches
<gcc-patches@gcc.gnu.org> wrote:
>
> Hi all,
>
> The patch fixes a typo that would make some errors in fast-unaligned-access
> targets.
>
>     RISC-V: fix a typo in riscv.h
>
>     2020-09-14 Yeting Kuo <fakepaper56@gmail.com>
>
>     gcc/
>             * config/riscv/riscv.h
>
> diff --git a/gcc/config/riscv/riscv.h b/gcc/config/riscv/riscv.h
> index 9f67d82e74e..b7b4a1c88a5 100644
> --- a/gcc/config/riscv/riscv.h
> +++ b/gcc/config/riscv/riscv.h
> @@ -941,7 +941,7 @@ extern unsigned riscv_stack_boundary;
>
>  /* This is the maximum value that can be represented in a compressed
> load/store
>     offset (an unsigned 5-bit value scaled by 4).  */
> -#define CSW_MAX_OFFSET ((4LL << C_S_BITS) - 1) & ~3
> +#define CSW_MAX_OFFSET (((4LL << C_S_BITS) - 1) & ~3)
>
>  /* Called from RISCV_REORG, this is defined in riscv-sr.c.  */
>
> Best Regard,
> Yeting