[clang] [clang] Add support for -fcx-limited-range and #pragma CX_LIMITED_RANGE. (PR #68820)

[Joshua Cranmer via cfe-commits]

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@@ -2807,6 +2807,9 @@ static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
   bool StrictFPModel = false;
   StringRef Float16ExcessPrecision = "";
   StringRef BFloat16ExcessPrecision = "";
+  StringRef CxLimitedRange = "NoCxLimiteRange";
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jcranmer-intel wrote:

This is spelled incorrectly, and yet another reason you should define a three-valued enum to represent range.

https://github.com/llvm/llvm-project/pull/68820