llvm/utils/DSAclean.py

   1 #!/usr/bin/env python
   2
   3 #changelog:
   4 #10/13/2005b: replaced the # in tmp(.#*)* with alphanumeric and _, this will then remove
   5 #nodes such as %tmp.1.i and %tmp._i.3
   6 #10/13/2005: exntended to remove variables of the form %tmp(.#)* rather than just
   7 #%tmp.#, i.e. it now will remove %tmp.12.3.15 etc, additionally fixed a spelling error in
   8 #the comments
   9 #10/12/2005: now it only removes nodes and edges for which the label is %tmp.# rather
  10 #than removing all lines for which the lable CONTAINS %tmp.#
  11
  12 from __future__ import print_function
  13
  14 import re
  15 import sys
  16 if( len(sys.argv) < 3 ):
  17         print('usage is: ./DSAclean <dot_file_to_be_cleaned> <out_put_file>')
  18         sys.exit(1)
  19 #get a file object
  20 input = open(sys.argv[1], 'r')
  21 output = open(sys.argv[2], 'w')
  22 #we'll get this one line at a time...while we could just put the whole thing in a string
  23 #it would kill old computers
  24 buffer = input.readline()
  25 while buffer != '':
  26         if re.compile("label(\s*)=(\s*)\"\s%tmp(.\w*)*(\s*)\"").search(buffer):
  27                 #skip next line, write neither this line nor the next
  28                 buffer = input.readline()
  29         else:
  30                 #this isn't a tmp Node, we can write it
  31                 output.write(buffer)
  32         #prepare for the next iteration
  33         buffer = input.readline()
  34 input.close()
  35 output.close()