https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81389
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution|--- |INVALID
--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to rockeet from comment #11)
> @H.J. Lu
>
> Have you tried your `solution`?
>
> `_mm_cmpestri` is a C function and have no overloaded with type `__m128i_u`.
Why would it need that? __m128i_u is convertible to __m128i, just do what H.J.
posted. Doing *(const __m128i*)(ptr+3) is UB at runtime if ptr mod 16 isn't
13, it doesn't matter what function you pass it into. And at -O1 GCC is able
to merge the memory load with the pcmpestri instruction in this case, if you
care about code quality, don't use -O0.
There is no bug on the GCC side.
