/usr/share/doc/gcc-python-plugin-doc/examples/show-lto-supergraph.py is in gcc-python-plugin-doc 0.15-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | # Copyright 2012 David Malcolm <dmalcolm@redhat.com>
# Copyright 2012 Red Hat, Inc.
#
# This is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see
# <http://www.gnu.org/licenses/>.
# Sample python script, to be run by our gcc plugin
# Show the "supergraph": the CFG of all functions, linked by
# interproceduraledges:
import gcc
from gccutils.graph.supergraph import Supergraph
from gccutils import invoke_dot
# We'll implement this as a custom pass, to be called directly before
# 'whole-program'
class ShowSupergraph(gcc.IpaPass):
def execute(self):
# (the callgraph should be set up by this point)
if gcc.is_lto():
sg = Supergraph(split_phi_nodes=False,
add_fake_entry_node=False)
dot = sg.to_dot('supergraph')
invoke_dot(dot)
ps = ShowSupergraph(name='show-supergraph')
ps.register_before('whole-program')
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