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1 #! /usr/bin/python
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2 #
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3 # Print a report on which libgccjit.so symbols are used in which test
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4 # cases, and which lack test coverage. Tested with Python 2.7 and 3.2
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5 # To be run from the root directory of the source tree.
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6 #
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7 # Copyright (C) 2014 Free Software Foundation, Inc.
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8 # Written by David Malcolm <dmalcolm@redhat.com>.
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9 #
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10 # This script is Free Software, and it can be copied, distributed and
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11 # modified as defined in the GNU General Public License. A copy of
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12 # its license can be downloaded from http://www.gnu.org/copyleft/gpl.html
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13
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14 from collections import Counter
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15 import glob
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16 import re
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17 import sys
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18
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19 def parse_map_file(path):
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20 """
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21 Parse libgccjit.map, returning the symbols in the API as a list of str.
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22 """
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23 syms = []
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24 with open(path) as f:
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25 for line in f:
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26 m = re.match('^\s+([a-z_]+);$', line)
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27 if m:
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28 syms.append(m.group(1))
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29 return syms
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30
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31 def parse_test_case(path):
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32 """
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33 Locate all symbol-like things in a C test case, yielding
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34 them as a sequence of str.
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35 """
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36 with open(path) as f:
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37 for line in f:
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38 for m in re.finditer('([_A-Za-z][_A-Za-z0-9]*)', line):
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39 yield m.group(1)
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40
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41 def find_test_cases():
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42 for path in glob.glob('gcc/testsuite/jit.dg/*.[ch]'):
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43 yield path
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44
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45 api_syms = parse_map_file('gcc/jit/libgccjit.map')
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46
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47 syms_in_test_cases = {}
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48 for path in find_test_cases():
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49 syms_in_test_cases[path] = list(parse_test_case(path))
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50
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51 uses = Counter()
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52 for sym in sorted(api_syms):
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53 print('symbol: %s' % sym)
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54 uses[sym] = 0
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55 for path in syms_in_test_cases:
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56 count = syms_in_test_cases[path].count(sym)
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57 uses[sym] += count
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58 if count:
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59 print(' uses in %s: %i' % (path, count))
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60 if uses[sym] == 0:
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61 print(' NEVER USED')
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62 sys.stdout.write('\n')
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63
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64 layout = '%40s %5s %s'
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65 print(layout % ('SYMBOL', 'USES', 'HISTOGRAM'))
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66 for sym, count in uses.most_common():
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67 print(layout % (sym, count, '*' * count if count else 'UNUSED'))
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