https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91696
Bug ID: 91696
Summary: [X86] AVX512 intrinsics that only support SAE should
allow (_MM_FOUND_NO_EXC|_MM_FROUND_CUR_DIRECTION) to
match icc
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: craig.topper at gmail dot com
Target Milestone: ---
The intrinsics that only support SAE like _mm512_cmp_round_ps_mask currently
only allow __MM_FROUND_NO_EXC or _MM_FROUND_CUR_DIRECTION to be specified in
the sae immediate parameter.
_MM_FROUND_NO_EXC isn't really the opposite of _MM_FROUND_CUR_DIRECTION based
on the format of this type of immediate. _MM_FROUND_NO_EXC by itself is
equivalent to (_MM_FROUND_NO_EXC|_MM_FROUND_TO_NEAREST_INT) since
_MM_FROUND_TO_NEAREST_INT is 0. But these instructions don't perform any
rounding so the rounding bits don't matter. It's a nice convenience that the
single constants _MM_FROUND_NO_EXC and _MM_FROUND_CUR_DIRECTION can be used.
But since the rounding mode doesn't matter
(_MM_FROUND_CUR_DIRECTION|_MM_FROUND_NO_EXC) should also be allowed.
