[compiler-rt] Fix invalid escape sequences in python files (#94030)

\d, \( and \) are not valid escape sequences; since python 3.12
they give SyntaxWarning, and will raise SyntaxError in future.
https://docs.python.org/3.12/whatsnew/3.12.html#other-language-changes

r"\(\d\)" and "\\(\\d\\)" are equivalent but the former is the shorter.

Co-authored-by: Eisuke Kawashima <e-kwsm@users.noreply.github.com>

compiler-rt/lib/asan/scripts/asan_symbolize.py

@@ -316,7 +316,7 @@ class DarwinSymbolizer(Symbolizer):
         #   * For C functions atos omits parentheses and argument types.
         #   * For C++ functions the function name (i.e., `foo` above) may contain
         #     templates which may contain parentheses.
-        match = re.match("^(.*) \(in (.*)\) \((.*:\d*)\)$", atos_line)
+        match = re.match(r"^(.*) \(in (.*)\) \((.*:\d*)\)$", atos_line)
         logging.debug("atos_line: %s", atos_line)
         if match:
             function_name = match.group(1)
@@ -541,7 +541,7 @@ class SymbolizationLoop(object):
         # names in the regex because it could be an
         # Objective-C or C++ demangled name.
         stack_trace_line_format = (
-            "^( *#([0-9]+) *)(0x[0-9a-f]+) *(?:in *.+)? *\((.*)\+(0x[0-9a-f]+)\)"
+            r"^( *#([0-9]+) *)(0x[0-9a-f]+) *(?:in *.+)? *\((.*)\+(0x[0-9a-f]+)\)"
         )
         match = re.match(stack_trace_line_format, line)
         if not match:

compiler-rt/lib/hwasan/scripts/hwasan_symbolize

@@ -316,7 +316,7 @@ class Symbolizer:
       self.__last_access_tag = int(match.group(2), 16)
 
   def process_tag_dump_line(self, line, ignore_tags=False):
-    m = re.match(r'.*?(0x[0-9a-f]+):' + '([ ]*[\[ ][0-9a-f][0-9a-f]\]?)' * 16, line)
+    m = re.match(r'.*?(0x[0-9a-f]+):' + r'([ ]*[\[ ][0-9a-f][0-9a-f]\]?)' * 16, line)
     if m is None:
       return False
     addr = m.group(1)