From: Chandler Carruth <chandlerc@gmail.com>
Date: Wed, 13 Aug 2014 10:00:46 +0000 (+0000)
Subject: [shuffle] Make the seed an optional component and add support for
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ba20fb11a78f1132ad7047459e0d3c0bba4721ae;p=oota-llvm.git

[shuffle] Make the seed an optional component and add support for
letting the python very directly compute a UUID.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215533 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/utils/shuffle_fuzz.py b/utils/shuffle_fuzz.py
index 1f1a0478f2b..b70530a0ed3 100755
--- a/utils/shuffle_fuzz.py
+++ b/utils/shuffle_fuzz.py
@@ -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',