[clang] [llvm] [HLSL] Implementation of the fmod intrinsic (PR #108849)

[Farzon Lotfi via cfe-commits]

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@@ -4782,6 +4782,12 @@ def HLSLStep: LangBuiltin<"HLSL_LANG"> {
   let Prototype = "void(...)";
 }
 
+def HLSLFmod : LangBuiltin<"HLSL_LANG"> {
+  let Spellings = ["__builtin_hlsl_elementwise_fmod"];
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farzonl wrote:

rename to `__builtin_elementwise_fmod` the add appropriate changes to `clang/docs/LanguageExtensions.rst` and  `clang/docs/ReleaseNotes.rst`

https://github.com/llvm/llvm-project/pull/108849