[clang] [HLSL] Add validation for the -enable-16bit-types option (PR #85340)

[Natalie Chouinard via cfe-commits]

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@@ -4284,11 +4284,25 @@ bool CompilerInvocation::ParseLangArgs(LangOptions &Opts, ArgList &Args,
           Diags.Report(diag::err_drv_hlsl_bad_shader_unsupported)
               << ShaderModel << T.getOSName() << T.str();
         }
+        // validate that if fnative-half-type is given, that
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sudonatalie wrote:

nit: LLVM coding style generally recommends proper capitalization and punctuation (ends with a period) for comments: https://llvm.org/docs/CodingStandards.html#commenting

https://github.com/llvm/llvm-project/pull/85340