Revert "auto-sync: fix byte pattern"

This reverts commit cf8e870.

suite/auto-sync/src/autosync/MCUpdater.py

@@ -146,14 +146,7 @@ def init_tests(self, unified_test_cases: bool):
         log.debug(f"llvm-mc result: {mc_output}")
         text_section = 0  # Counts the .text sections
         asm_pat = f"(?P<asm_text>.+)"
-        byte_pat = r"0[bx][a-fA-F0-9]+"
-        enc_pat = (
-            r"(\[?(?P<full_enc_string>"
-            + "(?P<enc_bytes>"
-            + rf"({byte_pat}(,\s*))+({byte_pat}|A)"
-            + ")"
-            + ")\]?)"
-        )
+        enc_pat = r"(\[?(?P<full_enc_string>(?P<enc_bytes>((0x[a-fA-F0-9]{1,2}[, ]{0,2}))+)[^, ]?)\]?)"
 
         dups = []
         for line in mc_output.stdout.splitlines():
@@ -167,7 +160,7 @@ def init_tests(self, unified_test_cases: bool):
             if not match:
                 continue
             full_enc_string = match.group("full_enc_string")
-            if not re.search(rf"{byte_pat}$", full_enc_string[:-1]):
+            if not re.search(r"0x[a-fA-F0-9]{1,2}$", full_enc_string[:-1]):
                 log.debug(f"Ignore because symbol injection is needed: {line}")
                 # The encoding string contains symbol information of the form:
                 # [0xc0,0xe0,A,A,A... or similar. We ignore these for now.