When I was in school I remember a professor saying to "Never gate a clock." In the 90's I think people were worried about clock glitches. My first few years i

When I was in school I remember a professor saying to "Never gate a clock." In the 90's I think people were worried about clock glitches. My first few years in the industry in the late 90's we had customers that didn't care about power usage. They wanted the fastest performance and would put a heat sink or bigger fan on their chip. It wasn't long after that when power usage became more important. We have had logic synthesis tools that automatically insert clock gate logic to save power using various glitchless clock cell designs.