base-stats: Rename Units namespace as units

As part of recent decisions regarding namespace
naming conventions, all namespaces will be changed
to snake case.

Stats::Units became Stats::units.

Change-Id: I9ce855b291db122d952098a090a2984b42152850
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/45415
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Hoa Nguyen <hoanguyen@ucdavis.edu>

src/cpu/pred/bpred_unit.cc

@@ -69,27 +69,27 @@ BPredUnit::BPredUnit(const Params &params)
 
 BPredUnit::BPredUnitStats::BPredUnitStats(Stats::Group *parent)
     : Stats::Group(parent),
-      ADD_STAT(lookups, Stats::Units::Count::get(), "Number of BP lookups"),
-      ADD_STAT(condPredicted, Stats::Units::Count::get(),
+      ADD_STAT(lookups, Stats::units::Count::get(), "Number of BP lookups"),
+      ADD_STAT(condPredicted, Stats::units::Count::get(),
                "Number of conditional branches predicted"),
-      ADD_STAT(condIncorrect, Stats::Units::Count::get(),
+      ADD_STAT(condIncorrect, Stats::units::Count::get(),
                "Number of conditional branches incorrect"),
-      ADD_STAT(BTBLookups, Stats::Units::Count::get(),
+      ADD_STAT(BTBLookups, Stats::units::Count::get(),
                "Number of BTB lookups"),
-      ADD_STAT(BTBHits, Stats::Units::Count::get(), "Number of BTB hits"),
-      ADD_STAT(BTBHitRatio, Stats::Units::Ratio::get(), "BTB Hit Ratio",
+      ADD_STAT(BTBHits, Stats::units::Count::get(), "Number of BTB hits"),
+      ADD_STAT(BTBHitRatio, Stats::units::Ratio::get(), "BTB Hit Ratio",
                BTBHits / BTBLookups),
-      ADD_STAT(RASUsed, Stats::Units::Count::get(),
+      ADD_STAT(RASUsed, Stats::units::Count::get(),
                "Number of times the RAS was used to get a target."),
-      ADD_STAT(RASIncorrect, Stats::Units::Count::get(),
+      ADD_STAT(RASIncorrect, Stats::units::Count::get(),
                "Number of incorrect RAS predictions."),
-      ADD_STAT(indirectLookups, Stats::Units::Count::get(),
+      ADD_STAT(indirectLookups, Stats::units::Count::get(),
                "Number of indirect predictor lookups."),
-      ADD_STAT(indirectHits, Stats::Units::Count::get(),
+      ADD_STAT(indirectHits, Stats::units::Count::get(),
                "Number of indirect target hits."),
-      ADD_STAT(indirectMisses, Stats::Units::Count::get(),
+      ADD_STAT(indirectMisses, Stats::units::Count::get(),
                "Number of indirect misses."),
-      ADD_STAT(indirectMispredicted, Stats::Units::Count::get(),
+      ADD_STAT(indirectMispredicted, Stats::units::Count::get(),
                "Number of mispredicted indirect branches.")
 {
     BTBHitRatio.precision(6);

src/cpu/pred/loop_predictor.cc

@@ -347,10 +347,10 @@ LoopPredictor::condBranchUpdate(ThreadID tid, Addr branch_pc, bool taken,
 
 LoopPredictor::LoopPredictorStats::LoopPredictorStats(Stats::Group *parent)
     : Stats::Group(parent),
-      ADD_STAT(correct, Stats::Units::Count::get(),
+      ADD_STAT(correct, Stats::units::Count::get(),
                "Number of times the loop predictor is the provider and the "
                "prediction is correct"),
-      ADD_STAT(wrong, Stats::Units::Count::get(),
+      ADD_STAT(wrong, Stats::units::Count::get(),
                "Number of times the loop predictor is the provider and the "
                "prediction is wrong")
 {

src/cpu/pred/statistical_corrector.cc

@@ -400,10 +400,10 @@ StatisticalCorrector::getSizeInBits() const
 StatisticalCorrector::StatisticalCorrectorStats::StatisticalCorrectorStats(
     Stats::Group *parent)
     : Stats::Group(parent),
-      ADD_STAT(correct, Stats::Units::Count::get(),
+      ADD_STAT(correct, Stats::units::Count::get(),
                "Number of time the SC predictor is the provider and the "
                "prediction is correct"),
-      ADD_STAT(wrong, Stats::Units::Count::get(),
+      ADD_STAT(wrong, Stats::units::Count::get(),
                "Number of time the SC predictor is the provider and the "
                "prediction is wrong")
 {

src/cpu/pred/tage_base.cc

@@ -719,39 +719,39 @@ TAGEBase::getGHR(ThreadID tid, BranchInfo *bi) const
 TAGEBase::TAGEBaseStats::TAGEBaseStats(
     Stats::Group *parent, unsigned nHistoryTables)
     : Stats::Group(parent),
-      ADD_STAT(longestMatchProviderCorrect, Stats::Units::Count::get(),
+      ADD_STAT(longestMatchProviderCorrect, Stats::units::Count::get(),
                "Number of times TAGE Longest Match is the provider and the "
                "prediction is correct"),
-      ADD_STAT(altMatchProviderCorrect, Stats::Units::Count::get(),
+      ADD_STAT(altMatchProviderCorrect, Stats::units::Count::get(),
                "Number of times TAGE Alt Match is the provider and the "
                "prediction is correct"),
-      ADD_STAT(bimodalAltMatchProviderCorrect, Stats::Units::Count::get(),
+      ADD_STAT(bimodalAltMatchProviderCorrect, Stats::units::Count::get(),
                "Number of times TAGE Alt Match is the bimodal and it is the "
                "provider and the prediction is correct"),
-      ADD_STAT(bimodalProviderCorrect, Stats::Units::Count::get(),
+      ADD_STAT(bimodalProviderCorrect, Stats::units::Count::get(),
                "Number of times there are no hits on the TAGE tables and the "
                "bimodal prediction is correct"),
-      ADD_STAT(longestMatchProviderWrong, Stats::Units::Count::get(),
+      ADD_STAT(longestMatchProviderWrong, Stats::units::Count::get(),
                "Number of times TAGE Longest Match is the provider and the "
                "prediction is wrong"),
-      ADD_STAT(altMatchProviderWrong, Stats::Units::Count::get(),
+      ADD_STAT(altMatchProviderWrong, Stats::units::Count::get(),
                "Number of times TAGE Alt Match is the provider and the "
                "prediction is wrong"),
-      ADD_STAT(bimodalAltMatchProviderWrong, Stats::Units::Count::get(),
+      ADD_STAT(bimodalAltMatchProviderWrong, Stats::units::Count::get(),
                "Number of times TAGE Alt Match is the bimodal and it is the "
                "provider and the prediction is wrong"),
-      ADD_STAT(bimodalProviderWrong, Stats::Units::Count::get(),
+      ADD_STAT(bimodalProviderWrong, Stats::units::Count::get(),
                "Number of times there are no hits on the TAGE tables and the "
                "bimodal prediction is wrong"),
-      ADD_STAT(altMatchProviderWouldHaveHit, Stats::Units::Count::get(),
+      ADD_STAT(altMatchProviderWouldHaveHit, Stats::units::Count::get(),
                "Number of times TAGE Longest Match is the provider, the "
                "prediction is wrong and Alt Match prediction was correct"),
-      ADD_STAT(longestMatchProviderWouldHaveHit, Stats::Units::Count::get(),
+      ADD_STAT(longestMatchProviderWouldHaveHit, Stats::units::Count::get(),
                "Number of times TAGE Alt Match is the provider, the "
                "prediction is wrong and Longest Match prediction was correct"),
-      ADD_STAT(longestMatchProvider, Stats::Units::Count::get(),
+      ADD_STAT(longestMatchProvider, Stats::units::Count::get(),
                "TAGE provider for longest match"),
-      ADD_STAT(altMatchProvider, Stats::Units::Count::get(),
+      ADD_STAT(altMatchProvider, Stats::units::Count::get(),
                "TAGE provider for alt match")
 {
     longestMatchProvider.init(nHistoryTables + 1);