add more test cases for softmax operator

test/gpu/miopen.cpp

@@ -592,13 +592,13 @@ struct test_softmax2 : verify_program<test_softmax2>
     }
 };
 
-template <int Axis>
-struct test_softmax : verify_program<test_softmax<Axis>>
+template <int Axis, migraphx::shape::type_t T>
+struct test_softmax : verify_program<test_softmax<Axis, T>>
 {
     migraphx::program create_program() const
     {
         migraphx::program p;
-        migraphx::shape s{migraphx::shape::float_type, {2080, 4, 1026, 6}};
+        migraphx::shape s{T, {2080, 4, 1026, 6}};
         auto param = p.add_parameter("0", s);
         p.add_instruction(migraphx::op::softmax{Axis}, param);
 
@@ -606,10 +606,14 @@ struct test_softmax : verify_program<test_softmax<Axis>>
     }
 };
 
-template struct test_softmax<0>;
-template struct test_softmax<1>;
-template struct test_softmax<2>;
-template struct test_softmax<3>;
+template struct test_softmax<0, migraphx::shape::float_type>;
+template struct test_softmax<1, migraphx::shape::float_type>;
+template struct test_softmax<2, migraphx::shape::float_type>;
+template struct test_softmax<3, migraphx::shape::float_type>;
+template struct test_softmax<1, migraphx::shape::double_type>;
+template struct test_softmax<3, migraphx::shape::double_type>;
+template struct test_softmax<0, migraphx::shape::half_type>;
+template struct test_softmax<2, migraphx::shape::half_type>;
 
 struct test_conv : verify_program<test_conv>
 {