[UTC] Fix SyntaxWarning on Python 3.12

[lukel97]

On Python 3.12 we now get a warning in common.py:

llvm/utils/UpdateTestChecks/common.py:488: SyntaxWarning: invalid escape sequence '\s'

This fixes it by using a raw string literal, see
#78036 and
https://docs.python.org/3/library/re.html

[llvmbot]

@llvm/pr-subscribers-testing-tools

Author: Luke Lau (lukel97)

Changes

On Python 3.12 we now get a warning in common.py:

llvm/utils/UpdateTestChecks/common.py:488: SyntaxWarning: invalid escape sequence '\s'

This fixes it by using a raw string literal, see
#78036 and
https://docs.python.org/3/library/re.html

---

Full diff: https://github.com/llvm/llvm-project/pull/82327.diff

1 Files Affected:

• (modified) llvm/utils/UpdateTestChecks/common.py (+1-1)

diff --git a/llvm/utils/UpdateTestChecks/common.py b/llvm/utils/UpdateTestChecks/common.py
index 75c6e438556337..4a02a92f824e65 100644
--- a/llvm/utils/UpdateTestChecks/common.py
+++ b/llvm/utils/UpdateTestChecks/common.py
@@ -485,7 +485,7 @@ def invoke_tool(exe, cmd_args, ir, preprocess_cmd=None, verbose=False):
 )
 
 UTC_ARGS_KEY = "UTC_ARGS:"
-UTC_ARGS_CMD = re.compile(r".*" + UTC_ARGS_KEY + "\s*(?P<cmd>.*)\s*$")
+UTC_ARGS_CMD = re.compile(r".*" + UTC_ARGS_KEY + r"\s*(?P<cmd>.*)\s*$")
 UTC_ADVERT = "NOTE: Assertions have been autogenerated by "
 UTC_AVOID = "NOTE: Do not autogenerate"
 UNUSED_NOTE = "NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:"