395 lines
9.6 KiB
C
395 lines
9.6 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/set.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 "statements.h"
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#include "strpool.h"
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typedef struct {
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void (*node) (dstring_t *, flowgraph_t *, flownode_t *, int);
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void (*edge) (dstring_t *, flowgraph_t *, flowedge_t *, int);
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void (*extra) (dstring_t *, flowgraph_t *, int);
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} flow_print_t;
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typedef struct {
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const char *type;
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flow_print_t *print;
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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_t *use = node->live_vars.use;
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set_t *def = node->live_vars.def;
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set_t *in = node->live_vars.in;
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set_t *out = node->live_vars.out;
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dasprintf (dstr, "%*sfn_%p [label=\"", indent, "", node);
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dasprintf (dstr, "use: %s\\n", set_as_string (use));
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dasprintf (dstr, "def: %s\\n", set_as_string (def));
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dasprintf (dstr, "in: %s\\n", set_as_string (in));
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dasprintf (dstr, "out: %s", set_as_string (out));
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dasprintf (dstr, "\"];\n");
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}
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static void
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print_flow_vars (dstring_t *dstr, flowgraph_t *graph, int level)
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{
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int indent = level * 2 + 2;
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int i;
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flowvar_t *var;
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dasprintf (dstr, "%*sfv_%p [shape=none,label=<\n", indent, "", graph);
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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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for (i = 0; i < graph->func->num_vars; i++) {
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var = graph->func->vars[i];
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dasprintf (dstr, "%*s<tr><td>(%d) %s %s</td></tr>\n", indent + 4, "",
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var->number, html_string(operand_string (var->op)),
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set_as_string (var->define));
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}
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dasprintf (dstr, "%*s</table>>];\n", indent + 2, "");
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}
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static void
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print_flow_node_reaching (dstring_t *dstr, flowgraph_t *graph,
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flownode_t *node, int level)
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{
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int indent = level * 2 + 2;
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int reach;
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set_t *gen = node->reaching_defs.gen;
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set_t *kill = node->reaching_defs.kill;
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set_t *in = node->reaching_defs.in;
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set_t *out = node->reaching_defs.out;
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reach = gen && kill && in && out;
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if (reach) {
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dasprintf (dstr, "%*sfn_%p [label=\"", indent, "", node);
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dasprintf (dstr, "gen: %s\\n", set_as_string (gen));
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dasprintf (dstr, "kill: %s\\n", set_as_string (kill));
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dasprintf (dstr, "in: %s\\n", set_as_string (in));
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dasprintf (dstr, "out: %s\"];\n", set_as_string (out));
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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_statements (dstring_t *dstr, flowgraph_t *graph,
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flownode_t *node, int level)
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{
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if (node->sblock) {
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dot_sblock (dstr, node->sblock, node->id);
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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_edge_statements (dstring_t *dstr, flowgraph_t *graph,
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flowedge_t *edge, 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 *h, *t;
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const char *hpre = "fn_", *tpre = "fn_";
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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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if (t->sblock) {
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tpre = "sb_";
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t = (flownode_t *) t->sblock;
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}
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if (h->sblock) {
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hpre = "sb_";
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h = (flownode_t *) h->sblock;
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}
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dasprintf (dstr, "%*s", indent, "");
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dasprintf (dstr, "%s%p -> ", tpre, t);
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dasprintf (dstr, "%s%p [%sstyle=%s,weight=%d", hpre, h, dir, style,
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weight);
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dasprintf (dstr, "];\n");
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}
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static flow_print_t null_print[] = {
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{ print_flow_node, print_flow_edge },
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{ 0 }
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};
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static flow_print_t dag_print[] = {
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{ print_flow_node_dag, print_flow_edge_dag},
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{ 0 }
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};
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static flow_print_t live_print[] = {
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{ print_flow_node_live, print_flow_edge, print_flow_vars},
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{ print_flow_node_statements, print_flow_edge_statements},
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{ 0 }
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};
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static flow_print_t reaching_print[] = {
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{ print_flow_node_reaching, print_flow_edge},
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{ 0 }
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};
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static flow_print_t statements_print[] = {
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{ print_flow_node_statements, print_flow_edge_statements},
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{ 0 }
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};
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static flow_dot_t flow_dot_methods[] = {
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{"", null_print},
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{"dag", dag_print},
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{"live", live_print},
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{"reaching", reaching_print},
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{"statements", statements_print},
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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 (flow_print_t *print = method->print; print->node; print++) {
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for (i = 0; i < graph->num_nodes; i++) {
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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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if ((int) graph->edges[i].head >= graph->num_nodes
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|| (int) graph->edges[i].tail >= graph->num_nodes)
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continue; // dummy node
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print->edge (dstr, graph, &graph->edges[i], 0);
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}
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if (print->extra)
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print->extra (dstr, graph, 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_reaching (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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void
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dump_dot_flow_statements (void *g, const char *filename)
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{
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print_flowgraph (&flow_dot_methods[4], (flowgraph_t *) g, filename);
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}
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