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Make graph dumps use graphviz format

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SLP build eventually uses graphds graphs, the following makes its
dump use graphviz format so you can easily visualize it.

	* graphds.cc (dump_graph): Dump in graphviz format.
This commit is contained in:
Richard Biener 2024-04-30 13:01:43 +02:00
parent 5176402d6f
commit c59708fba3
1 changed files with 6 additions and 11 deletions
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17
gcc/graphds.cc
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@ -31,22 +31,17 @@ dump_graph (FILE *f, struct graph *g)
int i;
struct graph_edge *e;
fprintf (f, "digraph {\n");
for (i = 0; i < g->n_vertices; i++)
{
if (!g->vertices[i].pred
&& !g->vertices[i].succ)
continue;
fprintf (f, "%d (%d)\t<-", i, g->vertices[i].component);
fprintf (f, "\"%d\" [label=\"%d (%d): %p\"];\n",
i, i, g->vertices[i].component, g->vertices[i].data);
for (e = g->vertices[i].pred; e; e = e->pred_next)
fprintf (f, " %d", e->src);
fprintf (f, "\n");
fprintf (f, "\t->");
fprintf (f, "\"%d\" -> \"%d\" [label=\"%p\"];\n", e->src, e->dest, e->data);
for (e = g->vertices[i].succ; e; e = e->succ_next)
fprintf (f, " %d", e->dest);
fprintf (f, "\n");
fprintf (f, "\"%d\" -> \"%d\";\n", e->src, e->dest);
}
fprintf (f, "}\n");
}
/* Creates a new graph with N_VERTICES vertices. */