Observation for <<Optimizatoin of Machine Descriptions for efficient use>>

The idea in this paper is quite analogous to human reasoning, for example, the representation of AND/OR tree instead of OR tree in Figure 5 and the order-optimization in Figure 6. The paper addresses the static scheduling (mostly for in-order processors), but didn't give the result of IPC that can be achieved by this static scheduling. I also couldn't find the comparision of the IPCs between the OR-tree and AND/OR tree.