AMD said back in 2016 to have a neural net predictor [1]. I found this slide following references in the Wikipedia article that rowanG077 linked below.
[1] https://cdn.arstechnica.net/wp-content/uploads/sites/3/2016/...
[1] https://cdn.arstechnica.net/wp-content/uploads/sites/3/2016/...
This slide is about speculative execution not necessarily about branch prediction.