[clang] [llvm] riscv: Support -mstack-protector-guard=tls (PR #108942)

[Craig Topper via cfe-commits]

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@@ -3681,6 +3698,11 @@ static void RenderSSPOptions(const Driver &D, const ToolChain &TC,
       D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Value;
       return;
     }
+    if (EffectiveTriple.isRISCV() && Value != "tp") {
+      D.Diag(diag::err_drv_invalid_value_with_suggestion)
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topperc wrote:

Is there a test for this error?

https://github.com/llvm/llvm-project/pull/108942