[clang] [Clang][Driver] Override complex number calculation method by -fno-fa… (PR #132680)

[Fangrui Song via cfe-commits]

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@@ -3148,6 +3158,7 @@ static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
                                  ComplexArithmeticStr(RangeVal));
         }
       }
+      LastComplexRangeOption = "-fcomplex-arithmetic";
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MaskRay wrote:

`Arg::getSpelling` returns the spelling. Don't write the string literal separately.

https://github.com/llvm/llvm-project/pull/132680