Re: [PATCH] builtins: Add __builtin_nextafterf16b builtin

[Jeff Law <jeffreyalaw@gmail.com>]

On 10/21/22 01:23, Jakub Jelinek wrote:
> Hi!
>
> On top of the pending
> https://gcc.gnu.org/pipermail/gcc-patches/2022-October/603665.html
> patch, the following patch adds another needed builtin.
> The above patch adds among other things __builtin_nextafterf16
> builtin which we need in order to constexpr evaluate
> std::nextafter(_Float16) overload (patch for that to be posted momentarily).
> While there is inline implementation of the overload, it isn't constant
> evaluation friendly, and the builtin doesn't need libm implementation
> because it will be used only during constant expression evaluation.
> We need the same thing also for std::nextafter(__gnu_cxx::__bfloat16_t)
> though and this patch does that.
>
> Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?
>
> 2022-10-21  Jakub Jelinek  <jakub@redhat.com>
>
> 	* builtin-types.def (BT_FN_BFLOAT16_BFLOAT16_BFLOAT16): New.
> 	* builtins.def (BUILT_IN_NEXTAFTERF16B): New builtin.
> 	* fold-const-call.cc (fold_const_call_sss): Handle
> 	CFN_BUILT_IN_NEXTAFTERF16B.

OK

jeff