https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110303
Xi Ruoyao <xry111 at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |xry111 at gcc dot gnu.org
--- Comment #5 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
(In reply to Denis Yaroshevskiy from comment #4)
> > so _mm_shuffle_epi32 requires a constant but since it is an argument, the
> > argument, it is not a constant expression requirement.
>
> The function is marked constexpr. So it can be a constant if you ask it.
The problem is -O0 means "don't ask it". Constant propagation is an
optimization, but -O0 means don't do optimization.
