Index: include/clang/Basic/DiagnosticParseKinds.td
===================================================================
--- include/clang/Basic/DiagnosticParseKinds.td	(revision 150458)
+++ include/clang/Basic/DiagnosticParseKinds.td	(working copy)
@@ -385,7 +385,7 @@
   InGroup<VexingParse>;
 def warn_dangling_else : Warning<
   "add explicit braces to avoid dangling else">,
-  InGroup<DanglingElse>;
+  InGroup<DanglingElse>, DefaultIgnore;
 def err_expected_member_or_base_name : Error<
   "expected class member or base class name">;
 def err_expected_lbrace_after_base_specifiers : Error<
Index: include/clang/Basic/DiagnosticSemaKinds.td
===================================================================
--- include/clang/Basic/DiagnosticSemaKinds.td	(revision 150458)
+++ include/clang/Basic/DiagnosticSemaKinds.td	(working copy)
@@ -3401,12 +3401,12 @@
   "remove constant to silence this warning">;
 
 def warn_bitwise_and_in_bitwise_or : Warning<
-  "'&' within '|'">, InGroup<BitwiseOpParentheses>;
+  "'&' within '|'">, InGroup<BitwiseOpParentheses>, DefaultIgnore;
 def note_bitwise_and_in_bitwise_or_silence : Note<
   "place parentheses around the '&' expression to silence this warning">;
 
 def warn_logical_and_in_logical_or : Warning<
-  "'&&' within '||'">, InGroup<LogicalOpParentheses>;
+  "'&&' within '||'">, InGroup<LogicalOpParentheses>, DefaultIgnore;
 def note_logical_and_in_logical_or_silence : Note<
   "place parentheses around the '&&' expression to silence this warning">;
 
@@ -4098,7 +4098,7 @@
   "place parentheses around the assignment to silence this warning">;
 
 def warn_equality_with_extra_parens : Warning<"equality comparison with "
-  "extraneous parentheses">, InGroup<ParenthesesOnEquality>;
+  "extraneous parentheses">, InGroup<ParenthesesOnEquality>, DefaultIgnore;
 def note_equality_comparison_to_assign : Note<
   "use '=' to turn this equality comparison into an assignment">;
 def note_equality_comparison_silence : Note<
@@ -4904,7 +4904,7 @@
   "switch condition has boolean value">;
 def warn_case_value_overflow : Warning<
   "overflow converting case value to switch condition type (%0 to %1)">,
-  InGroup<DiagGroup<"switch">>;
+  InGroup<DiagGroup<"switch">>, DefaultIgnore;
 def err_duplicate_case : Error<"duplicate case value '%0'">;
 def warn_case_empty_range : Warning<"empty case range specified">;
 def warn_missing_case_for_condition :
@@ -4924,22 +4924,22 @@
   InGroup<SwitchEnum>, DefaultIgnore;
 
 def warn_missing_case1 : Warning<"enumeration value %0 not handled in switch">,
-  InGroup<Switch>;
+  InGroup<Switch>, DefaultIgnore;
 def warn_missing_case2 : Warning<
   "enumeration values %0 and %1 not handled in switch">,
-  InGroup<Switch>;
+  InGroup<Switch>, DefaultIgnore;
 def warn_missing_case3 : Warning<
   "enumeration values %0, %1, and %2 not handled in switch">,
-  InGroup<Switch>;
+  InGroup<Switch>, DefaultIgnore;
 def warn_missing_cases : Warning<
   "%0 enumeration values not handled in switch: %1, %2, %3...">,
-  InGroup<Switch>;
+  InGroup<Switch>, DefaultIgnore;
 
 def warn_unreachable_default : Warning<
   "default label in switch which covers all enumeration values">,
   InGroup<CoveredSwitchDefault>, DefaultIgnore;
 def warn_not_in_enum : Warning<"case value not in enumerated type %0">,
-  InGroup<Switch>; 
+  InGroup<Switch>, DefaultIgnore; 
 def err_typecheck_statement_requires_scalar : Error<
   "statement requires expression of scalar type (%0 invalid)">;
 def err_typecheck_statement_requires_integer : Error<