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