[utils] De-duplicate utils/update_{llc_,}test_checks.py

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D42654

llvm-svn: 323718

1 files changed, 65 insertions, 0 deletions

diff --git a/llvm/utils/UpdateTestChecks/common.py b/llvm/utils/UpdateTestChecks/common.py
new file mode 100644
index 00000000000..f8f75c8b712
--- /dev/null
+++ b/llvm/utils/UpdateTestChecks/common.py
@@ -0,0 +1,65 @@
+import re
+import subprocess
+
+RUN_LINE_RE = re.compile('^\s*;\s*RUN:\s*(.*)$')
+CHECK_PREFIX_RE = re.compile('--?check-prefix(?:es)?=(\S+)')
+CHECK_RE = re.compile(r'^\s*;\s*([^:]+?)(?:-NEXT|-NOT|-DAG|-LABEL)?:')
+
+IR_FUNCTION_RE = re.compile('^\s*define\s+(?:internal\s+)?[^@]*@(\w+)\s*\(')
+TRIPLE_IR_RE = re.compile(r'^target\s+triple\s*=\s*"([^"]+)"$')
+TRIPLE_ARG_RE = re.compile(r'-mtriple=([^ ]+)')
+
+SCRUB_LEADING_WHITESPACE_RE = re.compile(r'^(\s+)')
+SCRUB_WHITESPACE_RE = re.compile(r'(?!^(|  \w))[ \t]+', flags=re.M)
+SCRUB_TRAILING_WHITESPACE_RE = re.compile(r'[ \t]+$', flags=re.M)
+SCRUB_KILL_COMMENT_RE = re.compile(r'^ *#+ +kill:.*\n')
+SCRUB_LOOP_COMMENT_RE = re.compile(
+    r'# =>This Inner Loop Header:.*|# in Loop:.*', flags=re.M)
+
+def should_add_line_to_output(input_line, prefix_set):
+  # Skip any blank comment lines in the IR.
+  if input_line.strip() == ';':
+    return False
+  # Skip any blank lines in the IR.
+  #if input_line.strip() == '':
+  #  return False
+  # And skip any CHECK lines. We're building our own.
+  m = CHECK_RE.match(input_line)
+  if m and m.group(1) in prefix_set:
+    return False
+
+  return True
+
+# Invoke the tool that is being tested.
+def invoke_tool(exe, cmd_args, ir):
+  with open(ir) as ir_file:
+    stdout = subprocess.check_output(exe + ' ' + cmd_args,
+                                     shell=True, stdin=ir_file)
+  # Fix line endings to unix CR style.
+  stdout = stdout.replace('\r\n', '\n')
+  return stdout
+
+# Build up a dictionary of all the function bodies.
+def build_function_body_dictionary(function_re, scrubber, scrubber_args, raw_tool_output, prefixes, func_dict, verbose):
+  for m in function_re.finditer(raw_tool_output):
+    if not m:
+      continue
+    func = m.group('func')
+    scrubbed_body = scrubber(m.group('body'), *scrubber_args)
+    if func.startswith('stress'):
+      # We only use the last line of the function body for stress tests.
+      scrubbed_body = '\n'.join(scrubbed_body.splitlines()[-1:])
+    if verbose:
+      print >>sys.stderr, 'Processing function: ' + func
+      for l in scrubbed_body.splitlines():
+        print >>sys.stderr, '  ' + l
+    for prefix in prefixes:
+      if func in func_dict[prefix] and func_dict[prefix][func] != scrubbed_body:
+        if prefix == prefixes[-1]:
+          print >>sys.stderr, ('WARNING: Found conflicting asm under the '
+                               'same prefix: %r!' % (prefix,))
+        else:
+          func_dict[prefix][func] = None
+          continue
+
+      func_dict[prefix][func] = scrubbed_body