Improved false positive rate for the idempotent operations checker and moved it into the default path-sensitive analysis options.
- Added checks for static local variables, self assigned parameters, and truncating/extending self assignments
- Removed command line option (now default with --analyze)
- Updated test cases to pass with idempotent operation warnings

llvm-svn: 108550
diff --git a/clang/lib/Checker/GRExprEngine.cpp b/clang/lib/Checker/GRExprEngine.cpp
index 07fee9d..1424820 100644
--- a/clang/lib/Checker/GRExprEngine.cpp
+++ b/clang/lib/Checker/GRExprEngine.cpp
@@ -361,6 +361,7 @@
   RegisterDereferenceChecker(Eng);
   RegisterVLASizeChecker(Eng);
   RegisterDivZeroChecker(Eng);
+  RegisterIdempotentOperationChecker(Eng);
   RegisterReturnUndefChecker(Eng);
   RegisterUndefinedArraySubscriptChecker(Eng);
   RegisterUndefinedAssignmentChecker(Eng);