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      1 #!/usr/bin/env python
      2 # coding=utf-8
      3 #
      4 # Copyright  2011 Intel Corporation
      5 #
      6 # Permission is hereby granted, free of charge, to any person obtaining a
      7 # copy of this software and associated documentation files (the "Software"),
      8 # to deal in the Software without restriction, including without limitation
      9 # the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10 # and/or sell copies of the Software, and to permit persons to whom the
     11 # Software is furnished to do so, subject to the following conditions:
     12 #
     13 # The above copyright notice and this permission notice (including the next
     14 # paragraph) shall be included in all copies or substantial portions of the
     15 # Software.
     16 #
     17 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     18 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     19 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     20 # THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     21 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     22 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     23 # DEALINGS IN THE SOFTWARE.
     24 
     25 # Compare two files containing IR code.  Ignore formatting differences
     26 # and declaration order.
     27 
     28 import os
     29 import os.path
     30 import subprocess
     31 import sys
     32 import tempfile
     33 
     34 from sexps import *
     35 
     36 if len(sys.argv) != 3:
     37     print 'Usage: compare_ir <file1> <file2>'
     38     exit(1)
     39 
     40 with open(sys.argv[1]) as f:
     41     ir1 = sort_decls(parse_sexp(f.read()))
     42 with open(sys.argv[2]) as f:
     43     ir2 = sort_decls(parse_sexp(f.read()))
     44 
     45 if ir1 == ir2:
     46     exit(0)
     47 else:
     48     file1, path1 = tempfile.mkstemp(os.path.basename(sys.argv[1]))
     49     file2, path2 = tempfile.mkstemp(os.path.basename(sys.argv[2]))
     50     try:
     51         os.write(file1, '{0}\n'.format(sexp_to_string(ir1)))
     52         os.close(file1)
     53         os.write(file2, '{0}\n'.format(sexp_to_string(ir2)))
     54         os.close(file2)
     55         subprocess.call(['diff', '-u', path1, path2])
     56     finally:
     57         os.remove(path1)
     58         os.remove(path2)
     59     exit(1)
     60