问题
As I understand, _mm_clflush() / _mm_clflushopt() invalidates a cache line while saving it to memory if it has been changed. Is there a way to simply abandon a cache line, without saving to memory any changes made to it?
A use case is before freeing memory: I don't need cache lines or their values anymore.
来源：https://stackoverflow.com/questions/45987746/how-to-abandon-invalidate-without-saving-a-cache-line-on-x86-64