Take 2: merge -Wuninitialized-experimental into -Wuninitialized. Only *must-be-uninitialized* warnings are reported, with *maybe-uninitialized* under a separate flag. I await any fallout/comments/feedback, although hopefully this will produce no noise for users.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127670 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/Basic/DiagnosticSemaKinds.td

@@ -867,7 +867,7 @@ def note_uninit_reference_member : Note<
 def warn_field_is_uninit : Warning<"field is uninitialized when used here">,
   InGroup<Uninitialized>;
 def warn_uninit_var : Warning<"variable %0 is possibly uninitialized when used here">,
-  InGroup<DiagGroup<"uninitialized-experimental">>, DefaultIgnore;
+  InGroup<Uninitialized>, DefaultIgnore;
 def warn_maybe_uninit_var :
   Warning<"variable %0 is possibly uninitialized when used here">,
     InGroup<UninitializedMaybe>, DefaultIgnore;
@@ -875,7 +875,7 @@ def note_uninit_var_def : Note<
   "variable %0 is declared here">;
 def warn_uninit_var_captured_by_block : Warning<
   "variable %0 is possibly uninitialized when captured by block">,
-  InGroup<DiagGroup<"uninitialized-experimental">>, DefaultIgnore;
+  InGroup<Uninitialized>, DefaultIgnore;
 def warn_maybe_uninit_var_captured_by_block : Warning<
   "variable %0 is possibly uninitialized when captured by block">,
   InGroup<UninitializedMaybe>, DefaultIgnore;

test/Sema/uninit-variables.c

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fsyntax-only -Wuninitialized-experimental -Wuninitialized-maybe -fsyntax-only -fblocks %s -verify
+// RUN: %clang_cc1 -fsyntax-only -Wuninitialized -Wuninitialized-maybe -fsyntax-only -fblocks %s -verify
 
 int test1() {
   int x; // expected-note{{variable 'x' is declared here}} expected-note{{add initialization to silence this warning}}

test/SemaCXX/uninit-variables.cpp

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fsyntax-only -Wuninitialized-experimental -fsyntax-only %s -verify
+// RUN: %clang_cc1 -fsyntax-only -Wuninitialized -fsyntax-only %s -verify
 
 int test1_aux(int &x);
 int test1() {

test/SemaObjC/uninit-variables.m

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fsyntax-only -Wuninitialized-experimental -fsyntax-only -fblocks %s -verify
+// RUN: %clang_cc1 -fsyntax-only -Wuninitialized -fsyntax-only -fblocks %s -verify
 
 // Duplicated from uninit-variables.c.
 // Test just to ensure the analysis is working.