update_any_test_checks.py: run from any dir

Allow running llvm/utils/update_any_test_checks.py from working
directories other llvm/utils/.

Fixes:
$ ./llvm/utils/update_any_test_checks.py path/to/foo.ll
utils/update_llc_test_checks.py: not found (used in path/to/foo.ll)

Reviewed By: arichardson

Differential Revision: https://reviews.llvm.org/D140586

diff --git a/llvm/utils/update_any_test_checks.py b/llvm/utils/update_any_test_checks.py
index e1c7a8f..33b6689 100755 (executable)
--- a/llvm/utils/update_any_test_checks.py
+++ b/llvm/utils/update_any_test_checks.py
@@ -48,11 +48,11 @@ def main():
   parser.add_argument('tests', nargs='+')
   config = parser.parse_args()
 
-  script_name = os.path.basename(__file__)
   if config.utc_dir:
     utc_search_path = config.utc_dir[:]
   else:
     utc_search_path = []
+  script_name = os.path.abspath(__file__)
   utc_search_path.append(os.path.join(os.path.dirname(script_name),
                                       os.path.pardir))