[clang] [HLSL] Add matrix support for isnan() and isinf() (PR #195586)

[Kaitlin Peng via cfe-commits]

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@@ -2200,7 +2200,8 @@ checkMathBuiltinElementType(Sema &S, SourceLocation Loc, QualType ArgTy,
 
   switch (ArgTyRestr) {
   case Sema::EltwiseBuiltinArgTyRestriction::None:
-    if (!ArgTy->getAs<VectorType>() && !isValidMathElementType(ArgTy)) {
+    if (!ArgTy->getAs<VectorType>() && !ArgTy->getAs<MatrixType>() &&
+        !isValidMathElementType(ArgTy)) {
       return S.Diag(Loc, diag::err_builtin_invalid_arg_type)
              << ArgOrdinal << /* vector */ 2 << /* integer */ 1 << /* fp */ 1
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kmpeng wrote:

Sorry this change was much bigger than anticipated and affected lots of files unrelated to the PR. Could you revert it? We'll track fixing the diagnostic with [this separate issue](https://github.com/llvm/llvm-project/issues/189147).

https://github.com/llvm/llvm-project/pull/195586