https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88497
--- Comment #9 from Kewen Lin <linkw at gcc dot gnu.org> ---
As Kelvin mentioned in the last comment, there is some thing we teach reassoc
to get the below code better, although it's in low priority.
double foo (double accumulator, vector double arg2[], vector double arg3[])
{
vector double temp;
temp = arg2[0] * arg3[0];
accumulator += temp[0] + temp[1];
temp = arg2[1] * arg3[1];
accumulator += temp[0] + temp[1];
temp = arg2[2] * arg3[2];
accumulator += temp[0] + temp[1];
temp = arg2[3] * arg3[3];
accumulator += temp[0] + temp[1];
return accumulator;
}
Confirmed.
