Added AnalyzerStatsChecker, a path sensitive check that reports visitation statistics about analysis. Running clang with the -analyzer-stats flag will emit warnings containing the information. We can then run a postanalysis script to take this data and give useful information about how much the analyzer missed in a project.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113568 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Checker/GRExprEngineExperimentalChecks.h b/lib/Checker/GRExprEngineExperimentalChecks.h
index 7b5b0ed..461318e 100644
--- a/lib/Checker/GRExprEngineExperimentalChecks.h
+++ b/lib/Checker/GRExprEngineExperimentalChecks.h
@@ -19,6 +19,7 @@
 
 class GRExprEngine;
 
+void RegisterAnalyzerStatsChecker(GRExprEngine &Eng);
 void RegisterCStringChecker(GRExprEngine &Eng);
 void RegisterIdempotentOperationChecker(GRExprEngine &Eng);
 void RegisterMallocChecker(GRExprEngine &Eng);