refine code for fp_convert test cases.

test/cpu_ops_test.cpp

@@ -1571,27 +1571,20 @@ TEST_CASE(fp32_fp16_test)
         return p;
     };
 
+    auto test_case = [&](std::vector<std::string>&& op_names)
     {
         std::vector<float> gold_res = {2.0, 4.0, 6.0, 8.0, 10.0, 12.0};
         auto p                      = create_program();
-        migraphx::quantize(p, {"all"});
+        migraphx::quantize(p, op_names);
         p.compile(migraphx::cpu::target{});
         auto result = p.eval({});
         std::vector<float> res;
         result.visit([&](auto output) { res.assign(output.begin(), output.end()); });
         EXPECT(migraphx::verify_range(res, gold_res));
-    }
+    };
 
-    {
-        std::vector<float> gold_res = {2.0, 4.0, 6.0, 8.0, 10.0, 12.0};
-        auto p                      = create_program();
-        migraphx::quantize(p, {"all"});
-        p.compile(migraphx::cpu::target{});
-        auto result = p.eval({});
-        std::vector<float> res;
-        result.visit([&](auto output) { res.assign(output.begin(), output.end()); });
-        EXPECT(migraphx::verify_range(res, gold_res));
-    }
+    test_case({"all"});
+    test_case({"add"});
 }
 
 int main(int argc, const char* argv[]) { test::run(argc, argv); }