diff --git a/.ci/premerge_advisor_upload.py b/.ci/premerge_advisor_upload.py
new file mode 100644
index 0000000000000..84214f8a6d7ef
--- /dev/null
+++ b/.ci/premerge_advisor_upload.py
@@ -0,0 +1,56 @@
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+"""Script for uploading results to the premerge advisor."""
+
+import argparse
+import os
+import platform
+import sys
+
+import requests
+
+import generate_test_report_lib
+
+PREMERGE_ADVISOR_URL = (
+    "http://premerge-advisor.premerge-advisor.svc.cluster.local:5000/upload"
+)
+
+
+def main(commit_sha, workflow_run_number, build_log_files):
+    junit_objects, ninja_logs = generate_test_report_lib.load_info_from_files(
+        build_log_files
+    )
+    test_failures = generate_test_report_lib.get_failures(junit_objects)
+    source = "pull_request" if "GITHUB_ACTIONS" in os.environ else "postcommit"
+    failure_info = {
+        "source_type": source,
+        "base_commit_sha": commit_sha,
+        "source_id": workflow_run_number,
+        "failures": [],
+    }
+    if test_failures:
+        for name, failure_message in test_failures:
+            failure_info["failures"].append({"name": name, "message": failure_message})
+    else:
+        ninja_failures = generate_test_report_lib.find_failure_in_ninja_logs(ninja_logs)
+        for name, failure_message in ninja_failures:
+            failure_info["failures"].append({"name": name, "message": failure_message})
+    requests.post(PREMERGE_ADVISOR_URL, json=failure_info)
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument("commit_sha", help="The base commit SHA for the test.")
+    parser.add_argument("workflow_run_number", help="The run number from GHA.")
+    parser.add_argument(
+        "build_log_files", help="Paths to JUnit report files and ninja logs.", nargs="*"
+    )
+    args = parser.parse_args()
+
+    # Skip uploading results on AArch64 for now because the premerge advisor
+    # service is not available on AWS currently.
+    if platform.machine() == "arm64":
+        sys.exit(0)
+
+    main(args.commit_sha, args.workflow_run_number, args.build_log_files)
diff --git a/.ci/utils.sh b/.ci/utils.sh
index 5d32968babb39..9aefcf212e457 100644
--- a/.ci/utils.sh
+++ b/.ci/utils.sh
@@ -38,6 +38,12 @@ function at-exit {
       $retcode "${BUILD_DIR}"/test-results.*.xml "${MONOREPO_ROOT}"/ninja*.log \
       >> $GITHUB_STEP_SUMMARY
   fi
+
+  if [[ "$retcode" != "0" ]]; then
+    python "${MONOREPO_ROOT}"/.ci/premerge_advisor_upload.py \
+      $(git rev-parse HEAD~1) $GITHUB_RUN_NUMBER \
+      "${BUILD_DIR}"/test-results.*.xml "${MONOREPO_ROOT}"/ninja*.log
+  fi
 }
 trap at-exit EXIT