[clang] [llvm] [clang] Add "debug_transparent" attribute (PR #109490)

[Michael Buch via llvm-commits]

================
@@ -109,6 +110,21 @@ static bool IsArtificial(VarDecl const *VD) {
                               cast<Decl>(VD->getDeclContext())->isImplicit());
 }
 
+static bool usesDebugTransparent(const Decl *D, const CodeGenModule &CGM) {
+  if (!D)
+    return false;
+
+  if (auto *attr = D->getAttr<DebugTransparentAttr>()) {
+    auto opts = CGM.getCodeGenOpts();
+    if (opts.DwarfVersion == 0) {
+      auto &diags = CGM.getDiags();
+      diags.Report(attr->getLocation(), diag::warn_debug_transparent_ignored);
----------------
Michael137 wrote:

Nit:
```suggestion
      CGM.getDiags().Report(attr->getLocation(), diag::warn_debug_transparent_ignored);
```

https://github.com/llvm/llvm-project/pull/109490