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

[Alexander Richardson via cfe-commits]

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@@ -3664,12 +3680,18 @@ static void RenderSSPOptions(const Driver &D, const ToolChain &TC,
           << A->getOption().getName() << Value;
       return;
     }
+    if (EffectiveTriple.isRISCV() && (Offset <= -2048 || Offset >= 2048)) {
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arichardson wrote:

Should probably have a comment and use IsInt<12>() instead of range checks.

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