[llvm] [utils] Add an alias name --cc for --clang (PR #69442)

[Shao-Ce SUN via llvm-commits]

https://github.com/sunshaoce created https://github.com/llvm/llvm-project/pull/69442

When using `update_cc_test_checks.py`, it is easy to mistakenly use the `--cc` option instead of `--clang` based on the name. It wouldn't have any negative impact if it's added as well, so I think it can be more convenient.

>From 93e20812c2f0fb2909804089dce6caf57bd13f88 Mon Sep 17 00:00:00 2001
From: Shao-Ce SUN <sunshaoce at gmail.com>
Date: Wed, 18 Oct 2023 18:16:29 +0800
Subject: [PATCH] [utils] Add an alias name --cc for --clang

---
 llvm/utils/update_cc_test_checks.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/utils/update_cc_test_checks.py b/llvm/utils/update_cc_test_checks.py
index e96d4167e6567f4..e1a767eb5603520 100755
--- a/llvm/utils/update_cc_test_checks.py
+++ b/llvm/utils/update_cc_test_checks.py
@@ -173,7 +173,7 @@ def config():
     )
     parser.add_argument("--llvm-bin", help="llvm $prefix/bin path")
     parser.add_argument(
-        "--clang", help='"clang" executable, defaults to $llvm_bin/clang'
+        "--cc", "--clang", help='"clang" executable, defaults to $llvm_bin/clang'
     )
     parser.add_argument(
         "--clang-args",