Re: [PATCH] x86: Compile some BF16 tests with -mno-avx512bf16 -mno-avxneconvert

[Hongtao Liu]

On Thu, Aug 20, 2026 at 10:50 AM H.J. Lu <hjl.to...@gmail.com> wrote:
>
> Compile some BF16 tests with -mno-avx512bf16 -mno-avxneconvert to avoid
>
> FAIL: gcc.target/i386/sse2-bfloat16-scalar-typecheck.c (test for excess 
> errors)
> FAIL: gcc.target/i386/vect-bfloat16-typecheck_1.c (test for excess errors)
> FAIL: gcc.target/i386/vect-bfloat16-typecheck_2.c (test for excess errors)
>
> with errors like
>
> sse2-bfloat16-scalar-typecheck.c:16:1: 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
> * gcc.target/i386/sse2-bfloat16-scalar-typecheck.c (dg-options):
> Add -mno-avx512bf16 -mno-avxneconvert.
> * gcc.target/i386/vect-bfloat16-typecheck_1.c (dg-options):
> Likewise.
> * gcc.target/i386/vect-bfloat16-typecheck_2.c (dg-options):
> Likewise.
>
> --
> H.J.



-- 
BR,
Hongtao