[llvm] r215533 - [shuffle] Make the seed an optional component and add support for

[Chandler Carruth]

Author: chandlerc
Date: Wed Aug 13 05:00:46 2014
New Revision: 215533

URL: http://llvm.org/viewvc/llvm-project?rev=215533&view=rev
Log:
[shuffle] Make the seed an optional component and add support for
letting the python very directly compute a UUID.

Modified:
    llvm/trunk/utils/shuffle_fuzz.py

Modified: llvm/trunk/utils/shuffle_fuzz.py
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/utils/shuffle_fuzz.py?rev=215533&r1=215532&r2=215533&view=diff
==============================================================================
--- llvm/trunk/utils/shuffle_fuzz.py (original)
+++ llvm/trunk/utils/shuffle_fuzz.py Wed Aug 13 05:00:46 2014
@@ -17,13 +17,14 @@ import argparse
 import itertools
 import random
 import sys
+import uuid
 
 def main():
   parser = argparse.ArgumentParser(description=__doc__)
-  parser.add_argument('seed',
-                      help='A string used to seed the RNG')
   parser.add_argument('-v', '--verbose', action='store_true',
                       help='Show verbose output')
+  parser.add_argument('--seed', default=str(uuid.uuid4()),
+                      help='A string used to seed the RNG')
   parser.add_argument('--max-shuffle-height', type=int, default=16,
                       help='Specify a fixed height of shuffle tree to test')
   parser.add_argument('--no-blends', dest='blends', action='store_false',