[UTC] Fix SyntaxWarning on Python 3.12 (#82327)

lukel97 · web-flow · commit 283a6b993665 · 2024-02-20T17:36:01.000+08:00
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
diff --git 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:"

Original file line number	Diff line number	Diff line change
`@@ -485,7 +485,7 @@ def invoke_tool(exe, cmd_args, ir, preprocess_cmd=None, verbose=False):`
`485`	`485`	`)`
`486`	`486`
`487`	`487`	`UTC_ARGS_KEY = "UTC_ARGS:"`
`488`		`-UTC_ARGS_CMD = re.compile(r"." + UTC_ARGS_KEY + "\s(?P<cmd>.)\s$")`
	`488`	`+UTC_ARGS_CMD = re.compile(r"." + UTC_ARGS_KEY + r"\s(?P<cmd>.)\s$")`
`489`	`489`	`UTC_ADVERT = "NOTE: Assertions have been autogenerated by "`
`490`	`490`	`UTC_AVOID = "NOTE: Do not autogenerate"`
`491`	`491`	`UNUSED_NOTE = "NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:"`