SuperscalarEventSets Documentation/Examples?

[iansseijelly]

Hi, rocket/events.scala has an API SuperscalarEventSets that presumably allows incrementing the csr.io.counters by more than 1. However, I am struggling to use it and wonder if there are any resources/documentation/examples of using it? Any help is appreciated, thanks :)
@ingallsj

[ingallsj]

We only have private examples of using this, and we didn't upstream any documentation, sorry! I can give you some simple examples here.

Connecting a sequence (or Chisel Vec) of x: Seq[EventSet], such as from multiple parallel pipelines in a superscalar processor,
and a singular y: EventSet, such as from a single pipeline in that same processor.

val perfEvents = new SuperscalarEventSets(Seq(
  (x,      (a, b) => a +& b),
  (Seq(y), (a, b) => a +& b),
))

[iansseijelly]

Ohhh thanks. This is very helpful!
I think I was using + instead of +& and that caused problems.