Yup, we spend a bunch of time trying different options. But they never gave Andy the uop he really wanted which would zero the next cache line. Normally when y

Yup, we spend a bunch of time trying different options. But they never gave Andy the uop he really wanted which would zero the next cache line. Normally when you start writing to memory the machine will populate the cache line to be written from memory. He wanted the ability to say he plans on writing the whole thing so don't bother and if something happens then assume it is all zeros. (or something like that) Perhaps the current machines have this now... but probably not.