See this thread https://github.com/openjdk/jdk/pull/17375#discussion_r1456368613

For example, it would be great if we can match `a - b == c` with something like

```
@IR(counts = {IRNode.CMP_LT[IRNode.ANY, IRNode.SUB_I, IRNode.ANY], "1"}
```

The arguments in the [] are the inputs. IRNode.ANY matches any node. (The zero'th node is ANY because its the region node).