[NFC] Move hlsl::DiagnoseTranslationUnit to separate file. (#6126)

Since DiagnoseTranslationUnit is after Sema, it doesn't need to be part
of SemaHLSL.
This is in preparation for moving DiagnoseHLSLMethodCall to
hlsl::DiagnoseTranslationUnit for access to the call graph.

Only move code to new file, not other changes except replace
OutputDebugFormat with llvm::dbgs for CallGraphWithRecurseGuard::dump.

For #5855

tools/clang/include/clang/Sema/SemaHLSL.h

@@ -69,11 +69,6 @@ void DiagnosePackingOffset(clang::Sema *self, clang::SourceLocation loc,
 void DiagnoseRegisterType(clang::Sema *self, clang::SourceLocation loc,
                           clang::QualType type, char registerType);
 
-clang::FunctionDecl *ValidateNoRecursion(clang::Sema *self,
-                                         clang::FunctionDecl *FD);
-
-void ValidateNoRecursionInTranslationUnit(clang::Sema *self);
-
 void DiagnoseTranslationUnit(clang::Sema *self);
 
 void DiagnoseUnusualAnnotationsForHLSL(

tools/clang/lib/Sema/CMakeLists.txt

@@ -41,6 +41,7 @@ add_clang_library(clangSema
   SemaExprObjC.cpp
   SemaFixItUtils.cpp
   SemaHLSL.cpp # HLSL Change
+  SemaHLSLDiagnoseTU.cpp # HLSL Change
   SemaInit.cpp
   SemaLambda.cpp
   SemaLookup.cpp