Use results consistently

Author: tbkka

benchmark/scripts/run_smoke_bench

@@ -269,7 +269,7 @@ def test_performance(
     log("")
     report_title = "Performance ({}): -{}".format(arch, opt_level)
     return report_results(
-        report_title, None, None, threshold * 1.4, output_file, *results
+        report_title, threshold * 1.4, output_file, *results
     )
 
 
@@ -301,8 +301,10 @@ def report_code_size(opt_level, old_dir, new_dir, architecture, platform, output
             new_lines += result_line(newsize)
             idx += 1
 
+    old_results = LogParser.results_from_string(old_lines)
+    new_results = LogParser.results_from_string(new_lines)
     return report_results(
-        "Code size: -" + opt_level, old_lines, new_lines, 0.01, output_file
+        "Code size: -" + opt_level, 0.01, output_file, old_results, new_results
     )
 
 
@@ -318,16 +320,11 @@ def get_codesize(filename):
 
 def report_results(
     title,
-    old_lines,
-    new_lines,
     threshold,
     output_file,
-    old_results=None,
-    new_results=None,
+    old_results,
+    new_results,
 ):
-    old_results = old_results or LogParser.results_from_string(old_lines)
-    new_results = new_results or LogParser.results_from_string(new_lines)
-
     print("------- " + title + " -------")
     print(create_report(old_results, new_results, threshold, "git"))