[clang] [Driver] Introduce ffp-model=aggressive (PR #100453)

[Fangrui Song via cfe-commits]

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@@ -2879,10 +2879,31 @@ static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
   std::string ComplexRangeStr = "";
   std::string GccRangeComplexOption = "";
 
+  auto setComplexRange = [&](LangOptions::ComplexRangeKind NewRange) {
+    // Warn if user expects to perform full implementation of complex
+    // multiplication or division in the presence of nan or ninf flags.
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MaskRay wrote:

typo: nan => nnan ?

https://github.com/llvm/llvm-project/pull/100453