Removed no-inputs case in parse_multinomial

src/include/migraphx/op/multinomial.hpp

@@ -29,7 +29,7 @@
  *
  *          In the large number limit, the fractional counts approach the multinomial distribution.
  *
- *      Inputs:   args[0] - a vector of probabilities for each category.  Values are running 
+ *      Inputs:   args[0] - a vector of probabilities for each category.  Values are running
  *                          totals as provided by op prefix_scan_sum.
  *                          Values are log normalized (i.e. start with any set of numbers > 0, then
  *                          val[i] = log(val[i]) / sum (log(val[0]) + log(val[1])+ ...) )

src/onnx/parse_multinomial.cpp

@@ -102,14 +102,20 @@ struct parse_multinomial : op_parser<parse_multinomial>
                     migraphx::make_op("random_uniform"), seed_input, rand_dummy);
             }
         }
-        else
-        {
-            // use literal.  It may be quite large.
-            auto rand_dummy = info.add_literal(
-                migraphx::literal{migraphx::shape::float_type, {batch_size * sample_size}});
-            randoms =
-                info.add_instruction(migraphx::make_op("random_uniform"), seed_input, rand_dummy);
-        }
+
+        // TODO:  Confirm that this case with no inputs should not be supported.  The input defines
+        // the number of categories, which can't be defaulted.  You can't get to this line with no
+        // inputs because there will be an exception when accessing args[0] above.
+
+        // else
+        // {
+        //     // use literal.  It may be quite large.
+        //     auto rand_dummy = info.add_literal(
+        //         migraphx::literal{migraphx::shape::float_type, {batch_size * sample_size}});
+        //     randoms =
+        //         info.add_instruction(migraphx::make_op("random_uniform"), seed_input,
+        //         rand_dummy);
+        // }
 
         return info.add_instruction(
             migraphx::make_op("multinomial", {{"dtype", output_type}}), cdf, randoms);