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comparison utils/bisect @ 77:54457678186b LLVM3.6

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LLVM 3.6
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Mon, 08 Sep 2014 22:06:00 +0900
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34:e874dbf0ad9d 77:54457678186b
1 #!/usr/bin/env python
2
3 import os
4 import sys
5 import argparse
6 import subprocess
7
8 parser = argparse.ArgumentParser()
9
10 parser.add_argument('--start', type=int, default=0)
11 parser.add_argument('--end', type=int, default=(1 << 32))
12 parser.add_argument('command', nargs='+')
13
14 args = parser.parse_args()
15
16 start = args.start
17 end = args.end
18
19 print("Bisect Starting!")
20 print("Start: %d" % start)
21 print("End: %d" % end)
22
23 last = None
24 while start != end and start != end-1:
25 count = start + (end - start)/2
26 print("Visiting Count: %d with (Start, End) = (%d,%d)" % (count, start, end))
27 cmd = [x % {'count':count} for x in args.command]
28 print cmd
29 result = subprocess.call(cmd)
30 if result == 0:
31 print(" PASSES! Setting start to count")
32 start = count
33 else:
34 print(" FAILS! Setting end to count")
35 end = count
36
37 print("Last good count: %d" % start)