276 lines
6.7 KiB
C
276 lines
6.7 KiB
C
/*
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dot_flow.c
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"emit" flow graphs to dot (graphvis).
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Copyright (C) 2012 Bill Currie <bill@taniwha.org>
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Author: Bill Currie <bill@taniwha.org>
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Date: 2012/11/01
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#include <stdlib.h>
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#include <QF/dstring.h>
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#include <QF/quakeio.h>
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#include <QF/va.h>
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#include "dags.h"
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#include "flow.h"
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#include "function.h"
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#include "expr.h"
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#include "set.h"
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#include "statements.h"
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#include "strpool.h"
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typedef struct {
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const char *type;
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void (*print_node) (dstring_t *, flowgraph_t *, flownode_t *, int);
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void (*print_edge) (dstring_t *, flowgraph_t *, flowedge_t *, int);
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} flow_dot_t;
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static void
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print_flow_node (dstring_t *dstr, flowgraph_t *graph, flownode_t *node,
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int level)
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{
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int indent = level * 2 + 2;
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dasprintf (dstr, "%*s\"fn_%p\" [label=\"%d (%d)\"];\n", indent, "",
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node, node->id, node->dfn);
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}
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static void
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print_flow_edge (dstring_t *dstr, flowgraph_t *graph, flowedge_t *edge,
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int level)
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{
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int indent = level * 2 + 2;
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int edge_num = edge - graph->edges;
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flownode_t *t, *h;
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const char *style;
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const char *dir;
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int weight;
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t = graph->nodes[edge->tail];
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h = graph->nodes[edge->head];
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if (t->dfn >= h->dfn) {
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flownode_t *temp;
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temp = h;
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h = t;
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t = temp;
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dir = "dir=back,";
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style = "dashed";
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weight = 0;
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} else if (set_is_member (graph->dfst, edge_num)) {
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dir = "";
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style = "bold";
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weight = 10;
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} else {
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dir = "";
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style = "solid";
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weight = 0;
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}
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dasprintf (dstr, "%*s", indent, "");
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dasprintf (dstr, "fn_%p -> ", t);
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dasprintf (dstr, "fn_%p [%sstyle=%s,weight=%d", h, dir, style, weight);
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dasprintf (dstr, "];\n");
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}
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static void
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print_flow_node_dag (dstring_t *dstr, flowgraph_t *graph, flownode_t *node,
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int level)
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{
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if (node->dag)
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print_dag (dstr, node->dag, va ("%d (%d)", node->id, node->dfn));
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else
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print_flow_node (dstr, graph, node, level);
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}
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static void
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print_flow_edge_dag (dstring_t *dstr, flowgraph_t *graph, flowedge_t *edge,
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int level)
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{
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int indent = level * 2 + 2;
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int edge_num = edge - graph->edges;
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flownode_t *t, *h;
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const char *tpref;
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const char *hpref;
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const char *style;
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const char *dir;
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int weight;
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t = graph->nodes[edge->tail];
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h = graph->nodes[edge->head];
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if (t->dfn >= h->dfn) {
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flownode_t *temp;
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temp = h;
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h = t;
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t = temp;
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tpref = "enter";
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hpref = "leave";
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dir = "dir=back,";
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style = "dashed";
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weight = 0;
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} else if (set_is_member (graph->dfst, edge_num)) {
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tpref = "leave";
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hpref = "enter";
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dir = "";
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style = "bold";
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weight = 10;
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} else {
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tpref = "leave";
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hpref = "enter";
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dir = "";
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style = "solid";
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weight = 0;
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}
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dasprintf (dstr, "%*s", indent, "");
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if (t->dag)
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dasprintf (dstr, "dag_%s_%p -> ", tpref, t->dag);
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else
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dasprintf (dstr, "fn_%p -> ", t);
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if (h->dag)
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dasprintf (dstr, "dag_%s_%p [%sstyle=%s,weight=%d",
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hpref, h->dag, dir, style, weight);
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else
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dasprintf (dstr, "fn_%p [%sstyle=%s,weight=%d",
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h, dir, style, weight);
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if (t->dag)
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dasprintf (dstr, ",ltail=cluster_dag_%p", t->dag);
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if (h->dag)
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dasprintf (dstr, ",lhead=cluster_dag_%p", h->dag);
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dasprintf (dstr, "];\n");
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}
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static void
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print_flow_node_live (dstring_t *dstr, flowgraph_t *graph, flownode_t *node,
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int level)
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{
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int indent = level * 2 + 2;
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set_iter_t *var_iter;
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flowvar_t *var;
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int live;
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live = node->live_vars.out && !set_is_empty (node->live_vars.out);
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if (live) {
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dasprintf (dstr, "%*sfn_%p [shape=none,label=<\n", indent, "", node);
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dasprintf (dstr, "%*s<table border=\"0\" cellborder=\"1\" "
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"cellspacing=\"0\">\n", indent + 2, "");
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dasprintf (dstr, "%*s<tr><td>%d (%d)</td></tr>\n", indent + 4, "",
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node->id, node->dfn);
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for (var_iter = set_first (node->live_vars.out); var_iter;
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var_iter = set_next (var_iter)) {
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var = graph->func->vars[var_iter->member];
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dasprintf (dstr, "%*s<tr><td>(%d) %s</td></tr>\n", indent + 4, "",
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var->number, html_string(operand_string (var->op)));
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}
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dasprintf (dstr, "%*s</table>>];\n", indent + 2, "");
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} else {
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print_flow_node (dstr, graph, node, level);
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}
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}
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static void
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print_flow_node_return (dstring_t *dstr, flowgraph_t *graph, flownode_t *node,
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int level)
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{
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int indent = level * 2 + 2;
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dasprintf (dstr, "%*s\"fn_%p\" [label=\"%d (%d)\\n%s\\n%s\"];\n",
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indent, "", node, node->id, node->dfn,
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pr_type_name[node->return_type.in],
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pr_type_name[node->return_type.out]);
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}
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static flow_dot_t flow_dot_methods[] = {
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{"", print_flow_node, print_flow_edge},
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{"dag", print_flow_node_dag, print_flow_edge_dag},
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{"live", print_flow_node_live, print_flow_edge},
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{"return", print_flow_node_return, print_flow_edge},
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};
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static void
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print_flowgraph (flow_dot_t *method, flowgraph_t *graph, const char *filename)
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{
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int i;
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dstring_t *dstr = dstring_newstr();
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dasprintf (dstr, "digraph flowgraph_%s_%p {\n", method->type, graph);
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dasprintf (dstr, " layout=dot;\n");
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dasprintf (dstr, " clusterrank=local;\n");
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dasprintf (dstr, " rankdir=TB;\n");
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dasprintf (dstr, " compound=true;\n");
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for (i = 0; i < graph->num_nodes; i++) {
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method->print_node (dstr, graph, graph->nodes[i], 0);
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}
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for (i = 0; i < graph->num_edges; i++) {
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method->print_edge (dstr, graph, &graph->edges[i], 0);
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}
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dasprintf (dstr, "}\n");
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if (filename) {
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QFile *file;
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file = Qopen (filename, "wt");
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Qwrite (file, dstr->str, dstr->size - 1);
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Qclose (file);
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} else {
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fputs (dstr->str, stdout);
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}
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dstring_delete (dstr);
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}
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void
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dump_dot_flow (void *g, const char *filename)
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{
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print_flowgraph (&flow_dot_methods[0], (flowgraph_t *) g, filename);
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}
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void
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dump_dot_flow_dags (void *g, const char *filename)
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{
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print_flowgraph (&flow_dot_methods[1], (flowgraph_t *) g, filename);
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}
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void
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dump_dot_flow_live (void *g, const char *filename)
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{
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print_flowgraph (&flow_dot_methods[2], (flowgraph_t *) g, filename);
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}
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void
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dump_dot_flow_return (void *g, const char *filename)
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{
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print_flowgraph (&flow_dot_methods[3], (flowgraph_t *) g, filename);
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}
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