1 files changed, 36 insertions, 0 deletions
diff --git a/lib/fuzzer/scripts/merge_data_flow.py b/lib/fuzzer/scripts/merge_data_flow.py
new file mode 100755
index 000000000000..d2f5081e7b8c
--- /dev/null
+++ b/lib/fuzzer/scripts/merge_data_flow.py
@@ -0,0 +1,36 @@
+#!/usr/bin/env python
+#===- lib/fuzzer/scripts/merge_data_flow.py ------------------------------===#
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+#===------------------------------------------------------------------------===#
+# Merge several data flow traces into one.
+# Usage:
+#   merge_data_flow.py trace1 trace2 ...  > result
+#===------------------------------------------------------------------------===#
+import sys
+import fileinput
+from array import array
+
+def Merge(a, b):
+  res = array('b')
+  for i in range(0, len(a)):
+    res.append(ord('1' if a[i] == '1' or b[i] == '1' else '0'))
+  return res.tostring()
+
+def main(argv):
+  D = {}
+  for line in fileinput.input():
+    [F,BV] = line.strip().split(' ')
+    if F in D:
+      D[F] = Merge(D[F], BV)
+    else:
+      D[F] = BV;
+  for F in D.keys():
+    print("%s %s" % (F, D[F]))
+
+if __name__ == '__main__':
+  main(sys.argv)