diff --git a/llvm/utils/phabricator/0002-Fixes-to-make-arcanist-compatible-with-php8.1.patch b/llvm/utils/phabricator/0002-Fixes-to-make-arcanist-compatible-with-php8.1.patch
new file mode 100644
--- /dev/null
+++ b/llvm/utils/phabricator/0002-Fixes-to-make-arcanist-compatible-with-php8.1.patch
@@ -0,0 +1,99 @@
+From 86e115d6d5ca6f2cf13ca2ea789608e24ddfee26 Mon Sep 17 00:00:00 2001
+From: Tanu D <24976766+tanusgit@users.noreply.github.com>
+Date: Tue, 23 Aug 2022 19:09:54 -0700
+Subject: [PATCH] Fixes to make arcanist compatible with php8.1
+
+---
+ src/moduleutils/PhutilLibraryMapBuilder.php |  2 +-
+ src/unit/engine/phutil/PhutilTestCase.php   | 16 ++++++++--------
+ 2 files changed, 9 insertions(+), 9 deletions(-)
+
+diff --git a/src/moduleutils/PhutilLibraryMapBuilder.php b/src/moduleutils/PhutilLibraryMapBuilder.php
+index c036ed4..23a496f 100644
+--- a/src/moduleutils/PhutilLibraryMapBuilder.php
++++ b/src/moduleutils/PhutilLibraryMapBuilder.php
+@@ -122,7 +122,7 @@ final class PhutilLibraryMapBuilder extends Phobject {
+    */
+   private function log($message) {
+     if (!$this->quiet) {
+-      @fwrite(STDERR, "%s\n", $message);
++      @fwrite(STDERR, sprintf("%s\n", $message));
+     }
+     return $this;
+   }
+diff --git a/src/unit/engine/phutil/PhutilTestCase.php b/src/unit/engine/phutil/PhutilTestCase.php
+index fddb068..d296f79 100644
+--- a/src/unit/engine/phutil/PhutilTestCase.php
++++ b/src/unit/engine/phutil/PhutilTestCase.php
+@@ -408,7 +408,7 @@ abstract class PhutilTestCase extends Phobject {
+    *
+    * @task internal
+    */
+-  final private function failTest($reason) {
++  /*final*/ private function failTest($reason) {
+     $this->resultTest(ArcanistUnitTestResult::RESULT_FAIL, $reason);
+   }
+ 
+@@ -421,7 +421,7 @@ abstract class PhutilTestCase extends Phobject {
+    *
+    * @task internal
+    */
+-  final private function passTest($reason) {
++  /*final*/ private function passTest($reason) {
+     $this->resultTest(ArcanistUnitTestResult::RESULT_PASS, $reason);
+   }
+ 
+@@ -433,12 +433,12 @@ abstract class PhutilTestCase extends Phobject {
+    * @return void
+    * @task internal
+    */
+-  final private function skipTest($reason) {
++  /*final*/ private function skipTest($reason) {
+     $this->resultTest(ArcanistUnitTestResult::RESULT_SKIP, $reason);
+   }
+ 
+ 
+-  final private function resultTest($test_result, $reason) {
++  /*final*/ private function resultTest($test_result, $reason) {
+     $coverage = $this->endCoverage();
+ 
+     $result = new ArcanistUnitTestResult();
+@@ -553,7 +553,7 @@ abstract class PhutilTestCase extends Phobject {
+   /**
+    * @phutil-external-symbol function xdebug_start_code_coverage
+    */
+-  final private function beginCoverage() {
++  /*final*/ private function beginCoverage() {
+     if (!$this->enableCoverage) {
+       return;
+     }
+@@ -566,7 +566,7 @@ abstract class PhutilTestCase extends Phobject {
+    * @phutil-external-symbol function xdebug_get_code_coverage
+    * @phutil-external-symbol function xdebug_stop_code_coverage
+    */
+-  final private function endCoverage() {
++  /*final*/ private function endCoverage() {
+     if (!$this->enableCoverage) {
+       return;
+     }
+@@ -618,7 +618,7 @@ abstract class PhutilTestCase extends Phobject {
+     return $coverage;
+   }
+ 
+-  final private function assertCoverageAvailable() {
++  /*final*/ private function assertCoverageAvailable() {
+     if (!function_exists('xdebug_start_code_coverage')) {
+       throw new Exception(
+         pht("You've enabled code coverage but XDebug is not installed."));
+@@ -675,7 +675,7 @@ abstract class PhutilTestCase extends Phobject {
+    *
+    * @return map
+    */
+-  final private static function getCallerInfo() {
++  /*final*/ private static function getCallerInfo() {
+     $callee = array();
+     $caller = array();
+     $seen = false;
+-- 
+2.34.1
+