https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121606
--- Comment #5 from rguenther at suse dot de <rguenther at suse dot de> --- On Wed, 20 Aug 2025, haochen.jiang at intel dot com wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121606 > > --- Comment #4 from Haochen Jiang <haochen.jiang at intel dot com> --- > (In reply to Richard Biener from comment #3) > > Hmm, but why would __attribute__((target("avx10.1"))) care for global > > -mno-*? > > It is caused by we are keeping that behavior same as command line option and > going through the whole ix86_option_override_internal, resulting in it is > equivalent to "-march=native -mavx10.1". > > In this case, it will finally become "-march=znver5 -mxyz -mno-abc -mavx10.1", > where xyz are the features Zen5 having, abc are those Zen5 not having. > -mno-avx512fp16 -mavx10.1 leads to the warning. But ./cc1 -quiet t.c -march=znver5 -mno-avx512fp16 -mavx10.1 doesn't diagnose it. And I wouldn't have expected a diagnostic for this as -mavx10.1 should simply re-enable avx512fp16?
