[analyzer] Report the cumulative number of steps the analyzer performs.

llvm-svn: 159036

clang/lib/StaticAnalyzer/Core/CoreEngine.cpp

@@ -26,6 +26,8 @@
 using namespace clang;
 using namespace ento;
 
+STATISTIC(NumSteps,
+            "The # of steps executed.");
 STATISTIC(NumReachedMaxSteps,
             "The # of times we reached the max number of steps.");
 STATISTIC(NumPathsExplored,
@@ -207,6 +209,8 @@ bool CoreEngine::ExecuteWorkList(const LocationContext *L, unsigned Steps,
       --Steps;
     }
 
+    NumSteps++;
+
     const WorkListUnit& WU = WList->dequeue();
 
     // Set the current block counter.