Re: [PATCH] RISC-V: Note that __builtin_riscv_pause() implies Xgnuzihintpausestate

[Kito Cheng <kito.cheng@gmail.com>]

Wait, what's Xgnuzihintpausestate???


On Fri, Nov 18, 2022 at 12:30 PM Palmer Dabbelt <palmer@rivosinc.com> wrote:
>
> gcc/ChangeLog:
>
>         * doc/extend.texi (__builtin_riscv_pause): Imply
>         Xgnuzihintpausestate.
> ---
>  gcc/doc/extend.texi | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
> index b1dd39e64b8..26f14e61bc8 100644
> --- a/gcc/doc/extend.texi
> +++ b/gcc/doc/extend.texi
> @@ -21103,7 +21103,9 @@ Returns the value that is currently set in the @samp{tp} register.
>  @end deftypefn
>
>  @deftypefn {Built-in Function}  void __builtin_riscv_pause (void)
> -Generates the @code{pause} (hint) machine instruction.
> +Generates the @code{pause} (hint) machine instruction.  This implies the
> +Xgnuzihintpausestate extension, which redefines the @code{pause} instruction to
> +change architectural state.
>  @end deftypefn
>
>  @node RX Built-in Functions
> --
> 2.38.1
>