67 lines
2 KiB
Python
67 lines
2 KiB
Python
#! /usr/bin/python
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#
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# Print a report on which libgccjit.so symbols are used in which test
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# cases, and which lack test coverage. Tested with Python 2.7 and 3.2
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# To be run from the root directory of the source tree.
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#
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# Copyright (C) 2014 Free Software Foundation, Inc.
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# Written by David Malcolm <dmalcolm@redhat.com>.
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#
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# This script is Free Software, and it can be copied, distributed and
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# modified as defined in the GNU General Public License. A copy of
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# its license can be downloaded from http://www.gnu.org/copyleft/gpl.html
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from collections import Counter
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import glob
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import re
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import sys
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def parse_map_file(path):
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"""
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Parse libgccjit.map, returning the symbols in the API as a list of str.
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"""
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syms = []
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with open(path) as f:
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for line in f:
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m = re.match('^\s+([a-z_]+);$', line)
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if m:
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syms.append(m.group(1))
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return syms
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def parse_test_case(path):
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"""
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Locate all symbol-like things in a C test case, yielding
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them as a sequence of str.
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"""
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with open(path) as f:
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for line in f:
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for m in re.finditer('([_A-Za-z][_A-Za-z0-9]*)', line):
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yield m.group(1)
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def find_test_cases():
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for path in glob.glob('gcc/testsuite/jit.dg/*.[ch]'):
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yield path
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api_syms = parse_map_file('gcc/jit/libgccjit.map')
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syms_in_test_cases = {}
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for path in find_test_cases():
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syms_in_test_cases[path] = list(parse_test_case(path))
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uses = Counter()
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for sym in sorted(api_syms):
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print('symbol: %s' % sym)
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uses[sym] = 0
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for path in syms_in_test_cases:
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count = syms_in_test_cases[path].count(sym)
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uses[sym] += count
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if count:
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print(' uses in %s: %i' % (path, count))
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if uses[sym] == 0:
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print(' NEVER USED')
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sys.stdout.write('\n')
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layout = '%40s %5s %s'
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print(layout % ('SYMBOL', 'USES', 'HISTOGRAM'))
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for sym, count in uses.most_common():
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print(layout % (sym, count, '*' * count if count else 'UNUSED'))
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