https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83711
Bug ID: 83711
Summary: GNU GCC version in geraphviz dot data
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: mooigraph at users dot sourceforge.net
Target Milestone: ---
It would be better to have the GCC version info in the graphviz dot data
generated with options -fdump-rtl-all-graph and -fdump-tree-all-graph.
Here is a trivial patch to add that similar as GNU Bison has it.
in graph.c
/* Start the dump of a graph. */
static void
start_graph_dump (FILE *fp, const char *base)
{
pretty_printer graph_slim_pp;
graph_slim_pp.buffer->stream = fp;
pretty_printer *const pp = &graph_slim_pp;
pp_printf (pp, "// Generated by GNU GCC version %s.\n", version_string);
pp_printf (pp, "// Report bugs to <%s>.\n",bug_report_url);
pp_printf (pp, "// Home page: <%s>.\n", "https://gcc.gnu.org";);
pp_string (pp, "digraph \"");
pp_write_text_to_stream (pp);
pp_string (pp, base);
pp_write_text_as_dot_label_to_stream (pp, /*for_record=*/false);
pp_string (pp, "\" {\n");
pp_string (pp, "overlap=false;\n");
pp_flush (pp);
}
Then the generated data looks like this:
// Generated by GNU GCC version 8.0.0 20171231 (experimental).
// Report bugs to <<https://gcc.gnu.org/bugs/>>.
// Home page: <https://gcc.gnu.org>.
digraph "rhp.c.088t.fixup_cfg4" {
overlap=false;
subgraph "cluster_rhp_version" {
style="dashed";
color="black";
...
voila.
