================
@@ -1948,6 +1929,20 @@ float3 normalize(float3);
 _HLSL_BUILTIN_ALIAS(__builtin_hlsl_normalize)
 float4 normalize(float4);
 
+//===----------------------------------------------------------------------===//
+// NonUniformResourceIndex builtins
+//===----------------------------------------------------------------------===//
+
+/// \fn uint NonUniformResourceIndex(uint I)
+/// \brief A compiler hint to indicate that a resource index varies across
+/// threads within a wave (i.e., it is non-uniform).
+/// \param I [in] Resource array index.
+///
+/// The return value is the \a I parameter.
+
----------------
bogner wrote:

The comment where this was moved from was like 15 lines long. Is it intentional 
to make this significantly less verbose?

Also I don't know if the extra blank line here will upset doxygen/clang tooling.

https://github.com/llvm/llvm-project/pull/188362
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