Fix test failures from previous change to read in protobuf data types...

Fix test failures from previous change to read in protobuf data types correctly for empty constants.

Instead of assuming things are empty and thus we default to float, reading in the correct types broke some assumptions code was using for an empty literal.

test/onnx/onnx_test.cpp

@@ -660,7 +660,7 @@ TEST_CASE(const_of_shape_empty_input_test)
 {
     migraphx::program p;
     auto* mm = p.get_main_module();
-    mm->add_literal(migraphx::literal());
+    mm->add_literal(migraphx::literal(migraphx::shape::int32_type));
     migraphx::shape s(migraphx::shape::int64_type, {1}, {0});
     std::vector<int64_t> vec(s.elements(), 10);
     mm->add_literal(migraphx::literal(s, vec));
@@ -3922,7 +3922,7 @@ TEST_CASE(reducesum_empty_axes_test)
 {
     migraphx::program p;
     auto* mm = p.get_main_module();
-    mm->add_literal({});
+    mm->add_literal(migraphx::literal{migraphx::shape::int64_type});
     auto x  = mm->add_parameter("x", migraphx::shape{migraphx::shape::float_type, {3, 4, 5, 6}});
     auto l1 = mm->add_instruction(migraphx::make_op("reduce_sum", {{"axes", {0, 1, 2, 3}}}), x);
     auto r  = mm->add_instruction(migraphx::make_op("squeeze", {{"axes", {0, 1, 2, 3}}}), l1);
@@ -3937,7 +3937,7 @@ TEST_CASE(reducesum_noop_test)
 {
     migraphx::program p;
     auto* mm = p.get_main_module();
-    mm->add_literal({});
+    mm->add_literal(migraphx::literal{migraphx::shape::int64_type});
     auto x = mm->add_parameter("x", migraphx::shape{migraphx::shape::float_type, {3, 4, 5, 6}});
     mm->add_return({x});
     auto prog = migraphx::parse_onnx("reducesum_noop_test.onnx");
@@ -5147,7 +5147,7 @@ TEST_CASE(squeeze_empty_axes_test)
 {
     migraphx::program p;
     auto* mm = p.get_main_module();
-    mm->add_literal({});
+    mm->add_literal(migraphx::literal{migraphx::shape::int64_type});
     auto l0 = mm->add_parameter("x", migraphx::shape{migraphx::shape::float_type, {3, 1, 5, 1}});
     auto l1 = mm->add_instruction(migraphx::make_op("squeeze"), l0);
     mm->add_return({l1});