https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79219
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I must say I don't understand the need for an extension here.
The argument that there might not be a type twice as large as the largest
you've made in the high part multiply case (which doesn't make much sense
anyway, because I assume the reason you want that is that it is fast and that
will only be the case if it is at most word * word -> highpart of doubleword
and in that case you always have a type for the doubleword (__int128 for
64-bit, long long for 32-bit)) doesn't apply here, you need to have the double
word value to divide. So IMNSHO you should just write
long foo (__int128_t a, long b)
{
return a / b;
}
or similar and if the HW has instruction for such a divide, it can use it.
