iaca 的一些参数

 Latency of the analyzed code section. Two types of latencies are computed:
Data Dependency Latency: the number of cycles it takes to execute the data dependency

critical path (see below)
Performance Latency: the number of cycles it takes to execute the performance criticalpath (see below).

 Port binding cycle summary.
  Detailed report on the port binding of each instruction and the number of cycles the port was bound.

   Instructions on one or more of the code section critical paths. There are two types of  critical paths:

   Data Dependency critical path: identifies the longest latency chain(s) of instructions  where inputs of one instruction depend on the output of previously executed instructions.

 Performance critical path: identifies the longest latency chains based on the following

criteria:
   Instructions whose inputs depend on the output of previously executed instructions.
   Instructions that were delayed due to frond-end pressure.