[clang] [NFC][Driver] Clean up RenderFloatingPointOptions() (PR #91017)

[Andy Kaylor via cfe-commits]

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@@ -3225,11 +3204,10 @@ static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
   if (!FPContract.empty())
     CmdArgs.push_back(Args.MakeArgString("-ffp-contract=" + FPContract));
 
-  if (!RoundingFPMath)
-    CmdArgs.push_back(Args.MakeArgString("-fno-rounding-math"));
-
-  if (RoundingFPMath && RoundingMathPresent)
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andykaylor wrote:

Every place in the code that sets RoundingFPMath to true also sets RoundingMathPresent to true, so this variable was entirely redundant.

https://github.com/llvm/llvm-project/pull/91017