cpu: add more instruction mix statistics

For the o3, add instruction mix (OpClass) histogram at commit (stats
also already collected at issue). For the simple CPUs we add a
histogram of executed instructions

1 files changed, 12 insertions, 0 deletions

diff --git a/src/cpu/simple/base.cc b/src/cpu/simple/base.cc
index 3adf6d27f..f022d05e0 100644
--- a/src/cpu/simple/base.cc
+++ b/src/cpu/simple/base.cc
@@ -286,6 +286,16 @@ BaseSimpleCPU::regStats()
         .prereq(dcacheRetryCycles)
         ;
 
+    statExecutedInstType
+        .init(Enums::Num_OpClass)
+        .name(name() + ".op_class")
+        .desc("Class of executed instruction")
+        .flags(total | pdf | dist)
+        ;
+    for (unsigned i = 0; i < Num_OpClasses; ++i) {
+        statExecutedInstType.subname(i, Enums::OpClassStrings[i]);
+    }
+
     idleFraction = constant(1.0) - notIdleFraction;
     numIdleCycles = idleFraction * numCycles;
     numBusyCycles = (notIdleFraction)*numCycles;
@@ -532,6 +542,8 @@ BaseSimpleCPU::postExecute()
     }
     /* End power model statistics */
 
+    statExecutedInstType[curStaticInst->opClass()]++;
+
     if (FullSystem)
         traceFunctions(instAddr);