[mlir][tosa] Check empty Concat input for inferReturnTypeComponents

Signed-off-by: Jerry Ge <[email protected]>
Change-Id: I72e6f9bbdefca533f49e9c273d6a0d58aa30e4c1

Author: Jerry-Ge

mlir/lib/Dialect/Tosa/IR/TosaOps.cpp

@@ -1066,6 +1066,10 @@ LogicalResult tosa::ConcatOp::inferReturnTypeComponents(
 
     hasRankedInput = true;
   }
+
+  if (adaptor.getInput1().empty())
+    return failure();
+
   Type inputType =
       llvm::cast<TensorType>(adaptor.getInput1().getType()[0]).getElementType();
   if (!hasRankedInput) {