Re: [PATCH] ext-floating14.C: Compile with -mno-avx512bf16 -mno-avxneconvert

[Hongtao Liu]

On Thu, Aug 20, 2026 at 3:30 PM H.J. Lu <hjl.to...@gmail.com> wrote:
>
> Compile ext-floating14.C with -mno-avx512bf16 -mno-avxneconvert for x86
> to avoid
>
> FAIL: g++.dg/cpp23/ext-floating14.C  -std=gnu++23 (test for excess errors)
> FAIL: g++.dg/cpp23/ext-floating14.C  -std=gnu++26 (test for excess errors)
> FAIL: g++.dg/cpp23/ext-floating14.C  -std=gnu++29 (test for excess errors)
>
> with warnings like
>
> ext-floating14.C:112:111: warning: ‘__bfloat16’ is redefined from
> typedef ‘short’ to real ‘__bf16’ since GCC 13.1, be careful of
> implicit conversion between ‘__bf16’ and ‘short’; an explicit bitcast
> may be needed here
Ok.
>
> when AVXNECONVERT or AVX512BF16 are enabled by default.
>
> PR testsuite/126923
> * g++.dg/cpp23/ext-floating14.C (dg-additional-options): Add
> -mno-avx512bf16 -mno-avxneconvert for x86.
>
> --
> H.J.



-- 
BR,
Hongtao