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