Removed IdempotentOperationChecker from default analysis and returned back to a flag (-analyzer-check-idempotent-operations)
- Added IdempotentOperationChecker to experimental analyses for testing purposes
- Updated test cases to explictly call the checker

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110482 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Checker/AnalysisConsumer.cpp b/lib/Checker/AnalysisConsumer.cpp
index 2607664..ad5ccb5 100644
--- a/lib/Checker/AnalysisConsumer.cpp
+++ b/lib/Checker/AnalysisConsumer.cpp
@@ -29,6 +29,7 @@
 #include "clang/Checker/PathSensitive/GRTransferFuncs.h"
 #include "clang/Checker/PathDiagnosticClients.h"
 #include "GRExprEngineExperimentalChecks.h"
+#include "GRExprEngineInternalChecks.h"
 #include "clang/Basic/FileManager.h"
 #include "clang/Basic/SourceManager.h"
 #include "clang/Frontend/AnalyzerOptions.h"
@@ -343,6 +344,12 @@
   if (C.Opts.EnableExperimentalChecks)
     RegisterExperimentalChecks(Eng);
 
+  // Enable idempotent operation checking if it was explicitly turned on, or if
+  // we are running experimental checks (i.e. everything)
+  if (C.Opts.IdempotentOps || C.Opts.EnableExperimentalChecks
+      || C.Opts.EnableExperimentalInternalChecks)
+    RegisterIdempotentOperationChecker(Eng);
+
   // Set the graph auditor.
   llvm::OwningPtr<ExplodedNode::Auditor> Auditor;
   if (mgr.shouldVisualizeUbigraph()) {
diff --git a/lib/Checker/GRExprEngine.cpp b/lib/Checker/GRExprEngine.cpp
index 5bca1ed..ccb836f 100644
--- a/lib/Checker/GRExprEngine.cpp
+++ b/lib/Checker/GRExprEngine.cpp
@@ -367,7 +367,6 @@
   RegisterDereferenceChecker(Eng);
   RegisterVLASizeChecker(Eng);
   RegisterDivZeroChecker(Eng);
-  RegisterIdempotentOperationChecker(Eng);
   RegisterReturnUndefChecker(Eng);
   RegisterUndefinedArraySubscriptChecker(Eng);
   RegisterUndefinedAssignmentChecker(Eng);
diff --git a/lib/Checker/GRExprEngineExperimentalChecks.h b/lib/Checker/GRExprEngineExperimentalChecks.h
index ea8d3e3..7b5b0ed 100644
--- a/lib/Checker/GRExprEngineExperimentalChecks.h
+++ b/lib/Checker/GRExprEngineExperimentalChecks.h
@@ -20,6 +20,7 @@
 class GRExprEngine;
 
 void RegisterCStringChecker(GRExprEngine &Eng);
+void RegisterIdempotentOperationChecker(GRExprEngine &Eng);
 void RegisterMallocChecker(GRExprEngine &Eng);
 void RegisterPthreadLockChecker(GRExprEngine &Eng);
 void RegisterStreamChecker(GRExprEngine &Eng);
diff --git a/lib/Checker/GRExprEngineInternalChecks.h b/lib/Checker/GRExprEngineInternalChecks.h
index 9644eaf..f91a759 100644
--- a/lib/Checker/GRExprEngineInternalChecks.h
+++ b/lib/Checker/GRExprEngineInternalChecks.h
@@ -30,7 +30,6 @@
 void RegisterDereferenceChecker(GRExprEngine &Eng);
 void RegisterDivZeroChecker(GRExprEngine &Eng);
 void RegisterFixedAddressChecker(GRExprEngine &Eng);
-void RegisterIdempotentOperationChecker(GRExprEngine &Eng);
 void RegisterNoReturnFunctionChecker(GRExprEngine &Eng);
 void RegisterPointerArithChecker(GRExprEngine &Eng);
 void RegisterPointerSubChecker(GRExprEngine &Eng);
diff --git a/lib/Checker/IdempotentOperationChecker.cpp b/lib/Checker/IdempotentOperationChecker.cpp
index 26b018e..76f493e 100644
--- a/lib/Checker/IdempotentOperationChecker.cpp
+++ b/lib/Checker/IdempotentOperationChecker.cpp
@@ -48,7 +48,7 @@
 // - Handle mixed assumptions (which assumptions can belong together?)
 // - Finer grained false positive control (levels)
 
-#include "GRExprEngineInternalChecks.h"
+#include "GRExprEngineExperimentalChecks.h"
 #include "clang/Checker/BugReporter/BugType.h"
 #include "clang/Checker/PathSensitive/CheckerHelpers.h"
 #include "clang/Checker/PathSensitive/CheckerVisitor.h"