Include JIT results in the same results.json as the non-JIT results

Rather than callers invoking the runner multiple times to get separate
test262 and test262-jit results, run them both in one invocation so they
are included in the same results.json. This will allow BuggieBot to
display both runs in the /test262 command.

run_all_and_update_results.py

@@ -90,9 +90,11 @@ def main() -> None:
         help="output the per-file result to this file",
     )
     parser.add_argument(
-        "--jit",
-        action="store_true",
-        help="Enable JIT compilation mode",
+        "--per-file-jit-output",
+        default=None,
+        type=str,
+        metavar="PATH",
+        help="output the per-file JIT result to this file",
     )
     args = parser.parse_args()
 
@@ -157,7 +159,6 @@ def main() -> None:
             f"--libjs-test262-runner {libjs_test262_runner} "
             f"--test262 {test262} "
             "--silent --summary --json "
-            + ("--jit " if args.jit else "")
             + (
                 ""
                 if args.per_file_output is None
@@ -167,6 +168,23 @@ def main() -> None:
     )
     libjs_test262_results = libjs_test262_output["results"]["test"]["results"]
 
+    print("Running test262 with JIT compiler...")
+    libjs_test262_jit_output = json.loads(
+        # This is not the way, but I can't be bothered to import this stuff. :^)
+        run_command(
+            f"python3 {libjs_test262_main_py} "
+            f"--libjs-test262-runner {libjs_test262_runner} "
+            f"--test262 {test262} "
+            "--silent --summary --json --jit "
+            + (
+                ""
+                if args.per_file_jit_output is None
+                else f"--per-file {args.per_file_jit_output} "
+            )
+        )
+    )
+    libjs_test262_jit_results = libjs_test262_jit_output["results"]["test"]["results"]
+
     result = {
         "commit_timestamp": commit_timestamp,
         "run_timestamp": run_timestamp,
@@ -192,6 +210,21 @@ def main() -> None:
                     "todo_error": libjs_test262_results["TODO_ERROR"],
                 },
             },
+            "test262-jit": {
+                "duration": libjs_test262_jit_output["duration"],
+                "results": {
+                    "total": libjs_test262_jit_output["results"]["test"]["count"],
+                    "passed": libjs_test262_jit_results["PASSED"],
+                    "failed": libjs_test262_jit_results["FAILED"],
+                    "skipped": libjs_test262_jit_results["SKIPPED"],
+                    "metadata_error": libjs_test262_jit_results["METADATA_ERROR"],
+                    "harness_error": libjs_test262_jit_results["HARNESS_ERROR"],
+                    "timeout_error": libjs_test262_jit_results["TIMEOUT_ERROR"],
+                    "process_error": libjs_test262_jit_results["PROCESS_ERROR"],
+                    "runner_exception": libjs_test262_jit_results["RUNNER_EXCEPTION"],
+                    "todo_error": libjs_test262_jit_results["TODO_ERROR"],
+                },
+            },
             "test262-parser-tests": {
                 "duration": test_js_output["duration"],
                 "results": {