[clang] [llvm] [HLSL] Implement elementwise popcount (PR #108121)

[Farzon Lotfi via cfe-commits]

================
@@ -1522,6 +1522,14 @@ bool CheckUnsignedIntRepresentation(Sema *S, CallExpr *TheCall) {
                                   checkAllUnsignedTypes);
 }
 
+bool CheckIntRepresentation(Sema *S, CallExpr *TheCall) {
----------------
farzonl wrote:

It doesn't seem like this function is used? If it isn't please remove.

https://github.com/llvm/llvm-project/pull/108121