[clang] [Clang] Make Unlabeled the default control flow branch label scheme (PR #223297)

[Jesse Huang via cfe-commits]

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@@ -651,12 +651,7 @@ bool RISCVTargetInfo::checkCFBranchLabelSchemeSupported(
   // implements it
   switch (Scheme) {
   case CFBranchLabelSchemeKind::Default:
-    Diags.Report(diag::err_opt_not_valid_without_opt)
-        << "-fcf-protection=branch"
-        << (Twine("-mcf-branch-label-scheme=") +
-            getCFBranchLabelSchemeFlagVal(CFBranchLabelSchemeKind::Unlabeled))
-               .str();
-    return false;
+    return true;
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jaidTw wrote:

Yeah, It should still be implemented in the future

https://github.com/llvm/llvm-project/pull/223297