[llvm] [llubi] Add UTC helper (PR #180603)

[Yingwei Zheng via llvm-commits]

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@@ -0,0 +1,137 @@
+#!/usr/bin/env python3
+
+"""A test case update script.
+
+This script is a utility to update LLVM 'llubi' based test cases with new
+FileCheck patterns.
+"""
+
+from __future__ import print_function
+
+from sys import stderr
+from traceback import print_exc
+import argparse
+import os  # Used to advertise this file's name ("autogenerated_note").
+import subprocess
+import sys
+
+from UpdateTestChecks import common
+
+# llubi is the only llubi-like in the LLVM tree but downstream forks can add
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dtcxzyw wrote:

This script was adjusted from update_llc_test_checks.py. So there is something weird to be cleaned up.


https://github.com/llvm/llvm-project/pull/180603