1 files changed, 3 insertions, 0 deletions
diff --git a/src/cpu/simple/base.hh b/src/cpu/simple/base.hh
index ad672da6c..47034c300 100644
--- a/src/cpu/simple/base.hh
+++ b/src/cpu/simple/base.hh
@@ -283,6 +283,9 @@ class BaseSimpleCPU : public BaseCPU
     Stats::Scalar numBranchMispred;
     /// @}
 
+    // instruction mix histogram by OpClass
+    Stats::Vector statExecutedInstType;
+
     void serializeThread(std::ostream &os, ThreadID tid);
     void unserializeThread(Checkpoint *cp, const std::string &section,
                            ThreadID tid);