[clang] [Clang] Consider reachability for file-scope warnings on initializers (PR #163885)

[Yanzuo Liu via cfe-commits]

================
@@ -107,6 +113,10 @@ class AnalysisBasedWarnings {
   // Issue warnings that require whole-translation-unit analysis.
   void IssueWarnings(TranslationUnitDecl *D);
 
+  void RegisterVarDeclWarning(VarDecl *VD, PossiblyUnreachableDiag PUD);
+
+  void IssueWarningsForRegisteredVarDecl(VarDecl *VD);
----------------
zwuis wrote:

Same here, functions should start with a lowercase letter.

Ditto below (`EmitPossiblyUnreachableDiags`).

https://github.com/llvm/llvm-project/pull/163885