tree 7ce4f46988db51fd0cc3ee8358a88a6a456c5d9f
parent e85cf4f717ddd764a7c84000427ae56bac084855
author Melissa Jost <melissakjost@gmail.com> 1674121236 -0800
committer Bobby Bruce <bbruce@ucdavis.edu> 1678148245 +0000

cpu: Move numInsts, numOps, ipc, cpi to BaseCPU

In BaseCPU::BaseCPUStats, numInsts and numOps track per CPU core
committed instructions and operations.

In BaseCPU::FetchCPUStats, numInsts and numOps track per thread
fetched instructions and operations.

In BaseCPU::CommitCPUStats, numInsts and numOps track per thread
committed instructions and operations.

In BaseSimpleCPU, the countInst() function has been split into
countInst(), countFetchInst(), and countCommitInst(). The stat count
incrementation of countInst() has been removed and delegated to the
other two functions. countFetchInst() increments numInsts and numOps
of the FetchCPUStats group for a thread. countCommitInst() increments
the numInsts and numOps of the CommitCPUStats group for a thread and
of the BaseCPUStats group for a CPU core. These functions are called
in the appropriate stage within timing.cc and atomic.cc. The call to
countInst() is left unchanged. countFetchInst() is called in
preExecute(). countCommitInst() is called in postExecute().

For MinorCPU, only the commit level numInsts and numOps stats have been
implemented.

IPC and CPI stats have been added to BaseCPUStats (core level) and
CommitCPUStats (thread level). The formulas for the IPC and CPI stats
in CommitCPUStats are set in the BaseCPU constructor, after the
CommitCPUStats stat group object has been created.

Change-Id: If893b331fe4a6908e4b4caf4a30f1b0aeb4c4266
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/67392
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>