Re: [PATCH v1] RISC-V: Support RVV VFREC7 rounding mode intrinsic API

[Kito Cheng via Gcc-patches]

> +template<int UNSPEC>

You don't need a template class here since it can only be UNSPEC_VFREC7.

> +class vfrec7_frm : public function_base
> +{
> +public:
> +  bool has_rounding_mode_operand_p () const override { return true; }
> +
> +  rtx expand (function_expander &e) const override
> +  {
> +    return e.use_exact_insn (code_for_pred (UNSPEC, e.vector_mode ()));
> +  }
> +};
> +
> /* Implements vrsub.  */
> class vrsub : public function_base
> {
> @@ -2433,6 +2448,7 @@ static CONSTEXPR const unop<SQRT> vfsqrt_obj;
> static CONSTEXPR const unop_frm<SQRT> vfsqrt_frm_obj;
> static CONSTEXPR const float_misc<UNSPEC_VFRSQRT7> vfrsqrt7_obj;
> static CONSTEXPR const float_misc<UNSPEC_VFREC7> vfrec7_obj;
> +static CONSTEXPR const vfrec7_frm<UNSPEC_VFREC7> vfrec7_frm_obj;

Then `static CONSTEXPR const vfrec7_frm vfrec7_frm_obj;` here

> static CONSTEXPR const binop<SMIN> vfmin_obj;
> static CONSTEXPR const binop<SMAX> vfmax_obj;
> static CONSTEXPR const float_misc<UNSPEC_VCOPYSIGN> vfsgnj_obj;