https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114471
Hongtao Liu <liuhongt at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |liuhongt at gcc dot gnu.org
--- Comment #5 from Hongtao Liu <liuhongt at gcc dot gnu.org> ---
Maybe we should always use kmask under AVX512, currently only >= 128-bits
vector of vector _Float16 use kmask, < 128 bits vector still use vector mask.
24628 /* Scalar mask case. */
24629 if ((TARGET_AVX512F && TARGET_EVEX512 && vector_size == 64)
24630 || (TARGET_AVX512VL && (vector_size == 32 || vector_size == 16))
24631 /* AVX512FP16 only supports vector comparison
24632 to kmask for _Float16. */
24633 || (TARGET_AVX512VL && TARGET_AVX512FP16
24634 && GET_MODE_INNER (data_mode) == E_HFmode))
24635 {
24636 if (elem_size == 4
24637 || elem_size == 8
24638 || (TARGET_AVX512BW && (elem_size == 1 || elem_size == 2)))
24639 return smallest_int_mode_for_size (nunits);
24640 }
24641
24642 scalar_int_mode elem_mode
24643 = smallest_int_mode_for_size (elem_size * BITS_PER_UNIT);
24644
24645 gcc_assert (elem_size * nunits == vector_size);
24646
24647 return mode_for_vector (elem_mode, nunits);
