fix(llvm/**.py): fix invalid escape sequences

llvm/test/CodeGen/NVPTX/wmma.py

@@ -847,7 +847,7 @@ def gen_check_unsupported_ops(items):
     )
     print("; INTRINSICS: {{^; INTRINSICS_LIST_BEGIN}}")
     print(
-        """
+        r"""
 
 ; NOEXTGEOM-NOT: {{m8n32|m32n8}}
 ; NOINT-NOT: .{{s32|s8}}

llvm/tools/opt-viewer/opt-viewer.py

@@ -135,7 +135,7 @@ def render_inline_remarks(self, r, line):
         # Column is the number of characters *including* tabs, keep those and
         # replace everything else with spaces.
         indent = line[: max(r.Column, 1) - 1]
-        indent = re.sub("\S", " ", indent)
+        indent = re.sub(r"\S", " ", indent)
 
         # Create expanded message and link if we have a multiline message.
         lines = r.message.split("\n")

llvm/utils/DSAclean.py

@@ -24,7 +24,7 @@
 # it would kill old computers
 buffer = input.readline()
 while buffer != "":
-    if re.compile('label(\s*)=(\s*)"\s%tmp(.\w*)*(\s*)"').search(buffer):
+    if re.compile(r'label(\s*)=(\s*)"\s%tmp(.\w*)*(\s*)"').search(buffer):
         # skip next line, write neither this line nor the next
         buffer = input.readline()
     else:

llvm/utils/DSAextract.py

@@ -69,7 +69,7 @@
             # if this name is for the current node, add the dot variable name
             # for the node (it will be Node(hex number)) to our set of nodes
             if regexp.search(buffer):
-                node_set |= set([re.split("\s+", buffer, 2)[1]])
+                node_set |= set([re.split(r"\s+", buffer, 2)[1]])
                 break
     buffer = input.readline()
 
@@ -105,7 +105,7 @@
         if nodes[0][:13] in node_set and nodes[1][:13] in node_set:
             output.write(buffer)
     elif nodeexp.search(buffer):  # this is a node line
-        node = re.split("\s+", buffer, 2)[1]
+        node = re.split(r"\s+", buffer, 2)[1]
         if node in node_set:
             output.write(buffer)
     else:  # this is a support line

llvm/utils/add_argument_names.py

@@ -4,7 +4,7 @@
 
 def fix_string(s):
     TYPE = re.compile(
-        '\s*(i[0-9]+|float|double|x86_fp80|fp128|ppc_fp128|\[\[.*?\]\]|\[2 x \[\[[A-Z_0-9]+\]\]\]|<.*?>|{.*?}|\[[0-9]+ x .*?\]|%["a-z:A-Z0-9._]+({{.*?}})?|%{{.*?}}|{{.*?}}|\[\[.*?\]\])(\s*(\*|addrspace\(.*?\)|dereferenceable\(.*?\)|byval\(.*?\)|sret|zeroext|inreg|returned|signext|nocapture|align \d+|swiftself|swifterror|readonly|noalias|inalloca|nocapture))*\s*'
+        r'\s*(i[0-9]+|float|double|x86_fp80|fp128|ppc_fp128|\[\[.*?\]\]|\[2 x \[\[[A-Z_0-9]+\]\]\]|<.*?>|{.*?}|\[[0-9]+ x .*?\]|%["a-z:A-Z0-9._]+({{.*?}})?|%{{.*?}}|{{.*?}}|\[\[.*?\]\])(\s*(\*|addrspace\(.*?\)|dereferenceable\(.*?\)|byval\(.*?\)|sret|zeroext|inreg|returned|signext|nocapture|align \d+|swiftself|swifterror|readonly|noalias|inalloca|nocapture))*\s*'
     )
 
     counter = 0

llvm/utils/convert-constraint-log-to-z3.py

@@ -46,7 +46,7 @@ def main():
         content = f.read()
 
     groups = content.split("---")
-    var_re = re.compile("x\d+")
+    var_re = re.compile(r"x\d+")
 
     print("from z3 import *")
     for group in groups:

llvm/utils/extract_vplan.py

@@ -24,7 +24,7 @@
 matches = re.findall(pattern, sys.stdin.read())
 
 for vplan in matches:
-    m = re.search("graph \[.+(VF=.+,UF.+)", vplan)
+    m = re.search(r"graph \[.+(VF=.+,UF.+)", vplan)
     if not m:
         raise ValueError("Can't get the right VPlan name")
     name = re.sub("[^a-zA-Z0-9]", "", m.group(1))

llvm/utils/git/github-automation.py

@@ -53,9 +53,9 @@ def escape_description(str):
     # https://github.com/github/markup/issues/1168#issuecomment-494946168
     str = html.escape(str, False)
     # '@' followed by alphanum is a user name
-    str = re.sub("@(?=\w)", "@<!-- -->", str)
+    str = re.sub(r"@(?=\w)", "@<!-- -->", str)
     # '#' followed by digits is considered an issue number
-    str = re.sub("#(?=\d)", "#<!-- -->", str)
+    str = re.sub(r"#(?=\d)", "#<!-- -->", str)
     return str
 
 
@@ -474,7 +474,7 @@ def issue_remove_cherry_pick_failed_label(self):
     def get_main_commit(self, cherry_pick_sha: str) -> github.Commit.Commit:
         commit = self.repo.get_commit(cherry_pick_sha)
         message = commit.commit.message
-        m = re.search("\(cherry picked from commit ([0-9a-f]+)\)", message)
+        m = re.search(r"\(cherry picked from commit ([0-9a-f]+)\)", message)
         if not m:
             return None
         return self.repo.get_commit(m.group(1))

llvm/utils/indirect_calls.py

@@ -33,7 +33,7 @@ def look_for_indirect(file):
     for line in stdout.splitlines():
         if not line.startswith(" "):
             function = line
-        result = re.search("(call|jmp).*\*", line)
+        result = re.search(r"(call|jmp).*\*", line)
         if result is not None:
             # TODO: Perhaps use cxxfilt to demangle functions?
             print(function)

llvm/utils/relative_lines.py

@@ -17,8 +17,8 @@
 USAGE = """Example usage:
     find -type f clang/test/CodeCompletion | grep -v /Inputs/ | \\
     xargs relative_lines.py --dry-run --verbose --near=100 \\
-    --pattern='-code-completion-at[ =]%s:(\d+)' \\
-    --pattern='requires fix-it: {(\d+):\d+-(\d+):\d+}'
+    --pattern='-code-completion-at[ =]%s:(\\d+)' \\
+    --pattern='requires fix-it: {(\\d+):\\d+-(\\d+):\\d+}'
 """
 
 import argparse

llvm/utils/update_test_prefix.py

@@ -17,24 +17,24 @@ def remove_prefix(i, d=0):
             p = r.group(1)
             s = re.sub("=" + p + ",", "=", s)
             s = re.sub("," + p + "([, \n])", "\\1", s)
-            s = re.sub("\s+-?-check-prefix=" + p + "([ \n])", "\\1", s)
+            s = re.sub("\\s+-?-check-prefix=" + p + "([ \n])", "\\1", s)
         else:
             s = re.sub(
-                "-?-check-prefixes=([\w-]+)(\Z|[ \t\n])", "--check-prefix=\\1\\2", s
+                "-?-check-prefixes=([\\w-]+)(\\Z|[ \t\n])", "--check-prefix=\\1\\2", s
             )
             t = re.search(
-                "-?-check-(?:prefix|prefixes)=([^ ]+)\s+-?-check-(?:prefix|prefixes)=([^ ]+)",
+                r"-?-check-(?:prefix|prefixes)=([^ ]+)\s+-?-check-(?:prefix|prefixes)=([^ ]+)",
                 s,
             )
             while t:
                 s = re.sub(
                     t.group(), "--check-prefixes=" + t.group(1) + "," + t.group(2), s
                 )
                 t = re.search(
-                    "-?-check-(?:prefix|prefixes)=([^ ]+)\s+-?-check-(?:prefix|prefixes)=([^ ]+)",
+                    r"-?-check-(?:prefix|prefixes)=([^ ]+)\s+-?-check-(?:prefix|prefixes)=([^ ]+)",
                     s,
                 )
-            s = re.sub("\s+-?-check-prefix=CHECK[ \t]*\n", "\n", s)
+            s = re.sub("\\s+-?-check-prefix=CHECK[ \t]*\n", "\n", s)
         f.truncate(0)
         f.seek(0)
         f.write(s)