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cpu-o3: Move general fetch stats to BaseCPU::FetchCPUStats

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The stats moved are from fetch.hh and fetch.cc of O3. Stat branches is
now tracked by numBranches. Stat branchRate is now tracked by
branchRate in FetchCPUStats. Stat rate is tracked by fetchRate. Stat
insts is tracked by numInsts. Stat icacheStallCycles is tracked by
icacheStallCycles in FetchCPUStats.

Change-Id: I48313614edd078631df4ef6b00982c335798fcb1
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/67394
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
This commit is contained in:
Melissa Jost
2023-01-19 02:04:39 -08:00
committed by Bobby Bruce
parent d943e42bdd
commit 1c4cc8dbd0
4 changed files with 41 additions and 39 deletions
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28
src/cpu/base.cc
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@@ -196,8 +196,15 @@ BaseCPU::BaseCPU(const Params &p, bool is_checker)
executeStats.reserve(numThreads);
commitStats.reserve(numThreads);
for (int i = 0; i < numThreads; i++) {
fetchStats.emplace_back(new FetchCPUStats(this, i));
// create fetchStat object for thread i and set rate formulas
FetchCPUStats* fetchStatptr = new FetchCPUStats(this, i);
fetchStatptr->fetchRate = fetchStatptr->numInsts / baseStats.numCycles;
fetchStatptr->branchRate = fetchStatptr->numBranches /
baseStats.numCycles;
fetchStats.emplace_back(fetchStatptr);
executeStats.emplace_back(new ExecuteCPUStats(this, i));
// create commitStat object for thread i and set ipc, cpi formulas
CommitCPUStats* commitStatptr = new CommitCPUStats(this, i);
commitStatptr->ipc = commitStatptr->numInsts / baseStats.numCycles;
@@ -862,15 +869,31 @@ FetchCPUStats::FetchCPUStats(statistics::Group *parent, int thread_id)
"Number of instructions fetched (thread level)"),
ADD_STAT(numOps, statistics::units::Count::get(),
"Number of ops (including micro ops) fetched (thread level)"),
ADD_STAT(fetchRate, statistics::units::Rate<
statistics::units::Count, statistics::units::Cycle>::get(),
"Number of inst fetches per cycle"),
ADD_STAT(numBranches, statistics::units::Count::get(),
"Number of branches fetched"),
ADD_STAT(branchRate, statistics::units::Ratio::get(),
"Number of branch fetches per cycle"),
ADD_STAT(icacheStallCycles, statistics::units::Cycle::get(),
"ICache total stall cycles"),
ADD_STAT(numFetchSuspends, statistics::units::Count::get(),
"Number of times Execute suspended instruction fetching")
{
fetchRate
.flags(statistics::total);
numBranches
.prereq(numBranches);
branchRate
.flags(statistics::total);
icacheStallCycles
.prereq(icacheStallCycles);
}
// means it is incremented in a vector indexing and not directly
@@ -981,6 +1004,9 @@ CommitCPUStats::CommitCPUStats(statistics::Group *parent, int thread_id)
ADD_STAT(committedControl, statistics::units::Count::get(),
"Class of control type instructions committed")
{
numInsts
.prereq(numInsts);
cpi.precision(6);
ipc.precision(6);