Refactoring of Diagnostic class.

-Move the stuff of Diagnostic related to creating/querying diagnostic IDs into a new DiagnosticIDs class.
-DiagnosticIDs can be shared among multiple Diagnostics for multiple translation units.
-The rest of the state in Diagnostic object is considered related and tied to one translation unit.
-Have Diagnostic point to the SourceManager that is related with. Diagnostic can now accept just a
   SourceLocation instead of a FullSourceLoc.
-Reflect the changes to various interfaces.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119730 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/driver/cc1_main.cpp b/tools/driver/cc1_main.cpp
index de5e8bf..1f8d112 100644
--- a/tools/driver/cc1_main.cpp
+++ b/tools/driver/cc1_main.cpp
@@ -116,13 +116,14 @@
 int cc1_main(const char **ArgBegin, const char **ArgEnd,
              const char *Argv0, void *MainAddr) {
   llvm::OwningPtr<CompilerInstance> Clang(new CompilerInstance());
+  llvm::IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
 
   Clang->setLLVMContext(new llvm::LLVMContext());
 
   // Run clang -cc1 test.
   if (ArgBegin != ArgEnd && llvm::StringRef(ArgBegin[0]) == "-cc1test") {
-    Diagnostic Diags(new TextDiagnosticPrinter(llvm::errs(), 
-                                               DiagnosticOptions()));
+    Diagnostic Diags(DiagID, new TextDiagnosticPrinter(llvm::errs(), 
+                                                       DiagnosticOptions()));
     return cc1_test(Diags, ArgBegin + 1, ArgEnd);
   }
 
@@ -134,7 +135,7 @@
   // Buffer diagnostics from argument parsing so that we can output them using a
   // well formed diagnostic object.
   TextDiagnosticBuffer *DiagsBuffer = new TextDiagnosticBuffer;
-  Diagnostic Diags(DiagsBuffer);
+  Diagnostic Diags(DiagID, DiagsBuffer);
   CompilerInvocation::CreateFromArgs(Clang->getInvocation(), ArgBegin, ArgEnd,
                                      Diags);
 
diff --git a/tools/driver/cc1as_main.cpp b/tools/driver/cc1as_main.cpp
index 288e110..6159f4b 100644
--- a/tools/driver/cc1as_main.cpp
+++ b/tools/driver/cc1as_main.cpp
@@ -326,7 +326,8 @@
   TextDiagnosticPrinter *DiagClient
     = new TextDiagnosticPrinter(errs(), DiagnosticOptions());
   DiagClient->setPrefix("clang -cc1as");
-  Diagnostic Diags(DiagClient);
+  llvm::IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
+  Diagnostic Diags(DiagID, DiagClient);
 
   // Set an error handler, so that any LLVM backend diagnostics go through our
   // error handler.
diff --git a/tools/driver/driver.cpp b/tools/driver/driver.cpp
index c117281..57765fe 100644
--- a/tools/driver/driver.cpp
+++ b/tools/driver/driver.cpp
@@ -288,7 +288,8 @@
   TextDiagnosticPrinter *DiagClient
     = new TextDiagnosticPrinter(llvm::errs(), DiagnosticOptions());
   DiagClient->setPrefix(Path.getBasename());
-  Diagnostic Diags(DiagClient);
+  llvm::IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
+  Diagnostic Diags(DiagID, DiagClient);
 
 #ifdef CLANG_IS_PRODUCTION
   const bool IsProduction = true;